What are the cheapest airlines flying from Ottawa to London round-trip?

Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 831 on this airline. Additional options worth looking into are KLM and Air France, starting at C$ 893 and C$ 928 round-trip. You may be able to fly from Ottawa to London for 27% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Ottawa to London one-way?

To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 344. Porter Airlines flights start at C$ 619 while deals on Air Transat start at C$ 821 one-way.

What are the most popular routes from Ottawa to London?

Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.

What are the cheapest flights from Ottawa to London?

The cheapest flight price from Ottawa to London is C$ 935. On average you can expect to pay C$ 1,128. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 796.

What are the most popular airlines that fly from Ottawa to London?

Before booking your flight from Ottawa to London check out the most popular airlines for this route: Air Canada, Air France or Lufthansa.

Where are the most common layover locations when flying from Ottawa to London?

The most popular layover on flights from Ottawa to London is Toronto.

Where are the least popular layover locations for Ottawa to London flights?

Of the flights from Ottawa to London that have layovers, the fewest flights stop in Montreal.

What are some popular things to do or see while on a layover in Toronto?

Toronto travelers tend to visit Union Station, CN Tower, and Ed Mirvish Theatre more than anywhere else. Union Station, CN Tower, and Ed Mirvish Theatre are located about 19.5 km, 19.1 km, and 19.4 km, respectively from Toronto Pearson Intl. Those landing in Toronto looking to spend some time exploring during their layover can rent a car for about C$ 37 per day.

What is the cheapest day to fly round-trip from Ottawa to London?

Thursday flights are found to be more expensive to fly from Ottawa to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

How far in advance should I book a flight from Ottawa to London?

To save up to 24% on this flight, we recommend booking at least 52 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ottawa to London from C$ 1,022 1-2 weeks out and tickets from C$ 1,232 for flights departing within the next 72 hours.

What is the cheapest month to fly from Ottawa to London?

February can be a great time to fly to London from Ottawa with a flight ticket averaging about C$ 1,140. Cheapflights users have found deals in the month of February for as cheap as C$ 826. The most expensive prices can be found in the month of December.

What airport do you fly from for flights from Ottawa to London?

Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

Can I find deals for flights from Ottawa to London that include hotel bookings?

Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ottawa to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.

Can I find deals for business class flights from Ottawa to London?

Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 313+ Flights from Ottawa to London

The best prices from Ottawa to London are usually found in February or January, booked 72 days in advance, depart on a Sunday or Monday and return on a Monday

Cheap flight deals from Ottawa to London

Round-trip from	C$ 831
One-way from	C$ 313
Popular in	December
Cheapest in	February
Average price	C$ 1,039

Virgin Atlantic
18/2-25/2
2 total stops
29h 25m total
Ottawa to London

Search Deals

26/2
2 total stops
23h 35m total
Ottawa to London

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Best time to find cheap flights, 1% potential price drop

Search Deals

Average for round-trip flights in January 2025

Search Deals

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Thu 23/15:20 p.m.YOW - LHR

1 stop12h 10mAir France

Thu 30/16:20 a.m.LHR - YOW

1 stop13h 50mAir France

Deal found 16/1C$ 831

Mon 20/15:20 p.m.YOW - LHR

1 stop12h 10mVirgin Atlantic

Mon 27/16:20 a.m.LHR - YOW

1 stop13h 50mVirgin Atlantic

Deal found 16/1C$ 832

Tue 18/25:20 p.m.YOW - LHR

2 stops12h 25mMultiple Airlines

Tue 25/26:20 a.m.LHR - YOW

1 stop13h 50mMultiple Airlines

Deal found 16/1C$ 861

Tue 18/25:20 p.m.YOW - LHR

2 stops12h 25mKLM

Tue 25/26:30 a.m.LHR - YOW

2 stops13h 40mKLM

Deal found 16/1C$ 893

Sat 3/59:00 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Sat 24/512:40 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 16/1C$ 1,005

Fri 16/511:05 a.m.YOW - LGW

1 stop18h 40mPorter Airlines

Tue 27/512:40 p.m.LGW - YOW

1 stop13h 21mPorter Airlines

Deal found 16/1C$ 1,008

Fri 14/25:35 p.m.YOW - LHR

1 stop22h 00mAir Canada

Fri 21/23:00 p.m.LHR - YOW

1 stop23h 42mAir Canada

Deal found 15/1C$ 1,008

Mon 7/45:15 p.m.YOW - LCY

2 stops11h 15mKLM

Mon 14/410:00 a.m.LCY - YOW

2 stops19h 09mKLM

Deal found 15/1C$ 1,012

Mon 7/45:10 p.m.YOW - LGW

1 stop12h 35mAir Transat

Mon 14/412:40 p.m.LGW - YOW

1 stop17h 02mAir Transat

Deal found 15/1C$ 1,016

Mon 17/22:50 p.m.YOW - LGW

2 stops15h 05mMultiple Airlines

Mon 24/211:55 a.m.LGW - YOW

2 stops17h 14mMultiple Airlines

Deal found 16/1C$ 1,039

Mon 24/210:30 a.m.YOW - LHR

2 stops16h 55mUnited Airlines

Fri 28/37:40 a.m.LHR - YOW

2 stops34h 55mUnited Airlines

Deal found 15/1C$ 1,066

Tue 11/310:00 a.m.YOW - STN

2 stops20h 00mMultiple Airlines

Tue 18/311:00 a.m.STN - YOW

2 stops26h 20mMultiple Airlines

Deal found 16/1C$ 1,069

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 January 2025.

Tue 18/25:20 p.m.YOW - LHR

1 stop18h 15mVirgin Atlantic

Tue 25/29:00 a.m.LHR - YOW

1 stop11h 10mVirgin Atlantic

Deal found 16/1C$ 831

Tue 18/25:20 p.m.YOW - LHR

2 stops12h 25mMultiple Airlines

Tue 25/29:00 a.m.LHR - YOW

1 stop11h 10mMultiple Airlines

Deal found 16/1C$ 861

Tue 18/25:20 p.m.YOW - LHR

2 stops12h 25mKLM

Tue 25/26:30 a.m.LHR - YOW

2 stops13h 40mKLM

Deal found 16/1C$ 893

Tue 4/35:20 p.m.YOW - LHR

1 stop15h 25mAir France

Tue 11/36:20 a.m.LHR - YOW

1 stop13h 50mAir France

Deal found 16/1C$ 928

Thu 13/25:10 p.m.YOW - LGW

1 stop11h 35mPorter Airlines

Tue 18/211:40 a.m.LGW - YOW

1 stop18h 00mPorter Airlines

Deal found 15/1C$ 1,003

Sat 3/59:00 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Sat 24/512:40 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 16/1C$ 1,005

Fri 14/25:35 p.m.YOW - LHR

1 stop22h 00mAir Canada

Fri 21/23:00 p.m.LHR - YOW

1 stop23h 42mAir Canada

Deal found 15/1C$ 1,008

Mon 7/45:10 p.m.YOW - LGW

1 stop12h 35mAir Transat

Mon 14/412:40 p.m.LGW - YOW

1 stop17h 02mAir Transat

Deal found 15/1C$ 1,016

Fri 28/28:10 p.m.YOW - LHR

2 stops59h 40mWestJet

Tue 4/39:00 a.m.LHR - YOW

2 stops36h 48mWestJet

Deal found 15/1C$ 1,025

Mon 24/210:30 a.m.YOW - LHR

2 stops16h 55mUnited Airlines

Fri 28/37:40 a.m.LHR - YOW

2 stops34h 55mUnited Airlines

Deal found 15/1C$ 1,066

Sun 2/34:00 p.m.YOW - LHR

1 stop11h 30mAustrian Airlines

Sun 9/37:25 p.m.LHR - YOW

2 stops27h 57mAustrian Airlines

Deal found 16/1C$ 1,144

Wed 5/24:00 p.m.YOW - LGW

2 stops20h 50mSWISS

Tue 18/26:45 p.m.LGW - YOW

2 stops29h 37mSWISS

Deal found 15/1C$ 1,145

Direct flights from Ottawa to London
Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 January 2025.

Wed 16/49:10 p.m.YOW - LHR

Nonstop6h 25mAir Canada

Wed 23/412:40 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 15/1C$ 995

Wed 2/49:10 p.m.YOW - LHR

Nonstop6h 25mLufthansa

Wed 23/412:40 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 15/1C$ 1,005

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 17 January 2025 and is based on user searches.

Mon 20/15:20 p.m.YOW - LHR

1 stop12h 10mVirgin Atlantic

Mon 27/16:20 a.m.LHR - YOW

1 stop13h 50mVirgin Atlantic

Deal found 16/1C$ 832

Tue 21/15:45 a.m.YOW - LGW

2 stops32h 55mMultiple Airlines

Tue 28/18:15 a.m.LGW - YOW

3 stops20h 32mMultiple Airlines

Deal found 16/1C$ 1,134

Tue 21/14:00 p.m.YOW - LCY

2 stops35h 45mSWISS

Tue 28/19:15 a.m.LCY - YOW

2 stops15h 07mSWISS

Deal found 16/1C$ 1,947

Tue 21/15:45 a.m.YOW - LTN

2 stops35h 15mMultiple Airlines

Tue 28/17:10 a.m.LTN - YOW

3 stops21h 37mMultiple Airlines

Deal found 16/1C$ 1,091

Wed 22/15:45 p.m.YOW - LHR

1 stop38h 05mWestJet

Wed 29/12:50 p.m.LHR - YOW

1 stop14h 55mWestJet

Deal found 15/1C$ 908

Wed 22/14:45 p.m.YOW - LHR

2 stops14h 05mAir Canada

Wed 29/111:10 a.m.LHR - YOW

2 stops15h 58mAir Canada

Deal found 15/1C$ 1,009

Thu 23/15:20 p.m.YOW - LHR

1 stop12h 10mAir France

Thu 30/16:20 a.m.LHR - YOW

1 stop13h 50mAir France

Deal found 16/1C$ 831

Thu 23/15:20 p.m.YOW - LHR

2 stops15h 30mMultiple Airlines

Tue 28/16:20 a.m.LHR - YOW

1 stop13h 50mMultiple Airlines

Deal found 14/1C$ 859

Thu 23/15:20 p.m.YOW - LHR

2 stops15h 30mKLM

Tue 28/16:30 a.m.LHR - YOW

2 stops13h 40mKLM

Deal found 14/1C$ 891

Thu 23/14:00 p.m.YOW - LGW

1 stop12h 45mPorter Airlines

Thu 30/111:40 a.m.LGW - YOW

1 stop11h 40mPorter Airlines

Deal found 16/1C$ 1,026

Thu 23/16:20 a.m.YOW - LGW

1 stop22h 25mAir Transat

Thu 30/111:40 a.m.LGW - YOW

1 stop25h 35mAir Transat

Deal found 16/1C$ 1,286

Thu 23/12:10 p.m.YOW - LGW

2 stops20h 40mTAP AIR PORTUGAL

Thu 30/13:55 p.m.LGW - YOW

2 stops35h 13mTAP AIR PORTUGAL

Deal found 16/1C$ 2,696

One-way flights from Ottawa to London
Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 17 January 2025.

Wed 26/28:15 a.m.YOW - LHR

2 stops23h 35mMultiple Airlines

Deal found 15/1C$ 313

Thu 30/16:15 a.m.YOW - LHR

1 stop25h 35mWestJet

Deal found 16/1C$ 344

Wed 19/26:15 a.m.YOW - LGW

2 stops44h 15mMultiple Airlines

Deal found 16/1C$ 448

Wed 19/26:15 a.m.YOW - LTN

2 stops27h 40mMultiple Airlines

Deal found 16/1C$ 471

Fri 30/55:55 a.m.YOW - LGW

2 stops22h 15mWestJet

Deal found 16/1C$ 510

Wed 19/26:15 a.m.YOW - STN

3 stops35h 00mMultiple Airlines

Deal found 16/1C$ 530

Wed 19/26:15 a.m.YOW - LCY

3 stops34h 10mMultiple Airlines

Deal found 16/1C$ 586

Wed 2/45:10 p.m.YOW - LGW

1 stop12h 35mPorter Airlines

Deal found 15/1C$ 619

Fri 7/35:10 p.m.YOW - LGW

1 stop11h 35mAir Transat

Deal found 16/1C$ 821

Wed 2/42:45 p.m.YOW - LGW

2 stops20h 30mTurkish Airlines

Deal found 16/1C$ 940

Fri 21/34:00 p.m.YOW - LHR

2 stops37h 55mTurkish Airlines

Deal found 14/1C$ 983

Mon 17/31:00 p.m.YOW - LHR

1 stop14h 10mAir Canada

Deal found 14/1C$ 996

Find flights from Ottawa to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 18/2

5:20 p.m.-1:45 p.m.

1 stop15h 25m

London Heathrow

Tue 25/2

9:00 a.m.-3:10 p.m.

1 stop11h 10m

C$ 831

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 16/2

5:20 p.m.-8:00 a.m.

1 stop9h 40m

London Heathrow

Mon 24/2

9:00 a.m.-3:10 p.m.

1 stop11h 10m

C$ 832

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 18/2

5:20 p.m.-10:45 a.m.

2 stops12h 25m

London Heathrow

Tue 25/2

6:20 a.m.-3:10 p.m.

1 stop13h 50m

C$ 861

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 18/2

5:20 p.m.-10:45 a.m.

2 stops12h 25m

London Heathrow

Tue 25/2

6:30 a.m.-3:10 p.m.

2 stops13h 40m

C$ 893

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 6/2

6:15 a.m.-4:40 p.m.

2 stops29h 25m

London Gatwick

Tue 11/2

8:25 p.m.-12:46 a.m.

3 stops33h 21m

C$ 996

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Thu 13/2

5:10 p.m.-9:45 a.m.

1 stop11h 35m

London Gatwick

Tue 18/2

11:40 a.m.-12:40 a.m.

1 stop18h 00m

C$ 1,003

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 3/5

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

London Heathrow

Sat 24/5

12:40 p.m.-3:00 p.m.

Nonstop7h 20m

C$ 1,005

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 14/2

5:35 p.m.-8:35 p.m.

1 stop22h 00m

London Heathrow

Fri 21/2

3:00 p.m.-9:42 a.m.

1 stop23h 42m

C$ 1,008

OttawaLondon

YOW - LCY

YOWLCY

Ottawa

Mon 7/4

5:15 p.m.-9:30 a.m.

2 stops11h 15m

London City

Mon 14/4

10:00 a.m.-12:09 a.m.

2 stops19h 09m

C$ 1,012

OttawaLondon

YOW - LGW

YOWLGW

Ottawa

Mon 7/4

5:10 p.m.-10:45 a.m.

1 stop12h 35m

London Gatwick

Mon 14/4

12:40 p.m.-12:42 a.m.

1 stop17h 02m

C$ 1,016

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/1

Showing 1-10 of 38 results

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ottawa to London

Get recent, data-driven insights about flights from Ottawa to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ottawa to London?

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ottawa to London?

Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 560). Flying from Ottawa to London in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LON?

Unlike at noon, when flights are generally more expensive, you can save up to 6% on flights from Ottawa to London by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Ottawa to London?

Travelers seeking maximum savings on their Ottawa to London flight should consider departing on Sunday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

See what other customers who have flown with KLM, WestJet and Air Canada from Ottawa to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Porter Airlines

7.9

Good

276 reviews

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

KLM

7.8

Good

1,339 reviews

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

Air Transat

7.8

Good

381 reviews

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

Austrian Airlines

7.6

Good

786 reviews

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

SWISS

7.5

Good

1,598 reviews

Porter Airlines

7.9

Good

276 reviews

Check prices

Reviews

1 / 10

Related info for your journey

What airport do you fly from for flights from Ottawa to London?
Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.
What are the cheapest airlines flying from Ottawa to London round-trip?
Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 831 on this airline. Additional options worth looking into are KLM and Air France, starting at C$ 893 and C$ 928 round-trip. You may be able to fly from Ottawa to London for 27% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Ottawa to London one-way?
To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 344. Porter Airlines flights start at C$ 619 while deals on Air Transat start at C$ 821 one-way.
What are the most popular routes from Ottawa to London?
Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.
What are the cheapest flights from Ottawa to London?
The cheapest flight price from Ottawa to London is C$ 935. On average you can expect to pay C$ 1,128. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 796.
Where are the most common layover locations when flying from Ottawa to London?
The most popular layover on flights from Ottawa to London is Toronto.
What are some popular things to do or see while on a layover in Toronto?
Toronto travelers tend to visit Union Station, CN Tower, and Ed Mirvish Theatre more than anywhere else. Union Station, CN Tower, and Ed Mirvish Theatre are located about 19.5 km, 19.1 km, and 19.4 km, respectively from Toronto Pearson Intl. Those landing in Toronto looking to spend some time exploring during their layover can rent a car for about C$ 37 per day.
Where are the least popular layover locations for Ottawa to London flights?
Of the flights from Ottawa to London that have layovers, the fewest flights stop in Montreal.
Can I find deals for flights from Ottawa to London that include hotel bookings?
Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.
Can I find deals for business class flights from Ottawa to London?
Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to London?
Currently, January is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 560). Flying from Ottawa to London in July is currently the most expensive (average of C$ 874). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Brentford

Hounslow

Slough

Luton

Milton Keynes

Romford

Watford

Bedford

Bromley

Southall

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ottawa to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 762	AverageC$ 924	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	CheapestC$ 773	AverageC$ 974	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Porter Airlines	CheapestC$ 933	AverageC$ 1,105	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Air Transat	CheapestC$ 979	AverageC$ 1,188	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	CheapestC$ 1,011	AverageC$ 1,170	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 1,013	AverageC$ 1,235	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

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How does Cheapflights help users find flights from Ottawa to London?

Cheapflights helps you search for flights from Ottawa to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ottawa to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ottawa to London with no change fees?

Need flexible booking options for your flight to London from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to London become cheaper?

Yes! Start tracking prices for Ottawa to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Ottawa to London from C$ 313

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/2. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from Ottawa to London are usually found in February or January, booked 72 days in advance, depart on a Sunday or Monday and return on a Monday

Cheap flight deals from Ottawa to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ottawa to London

Cheapest flights from Ottawa to LondonExplore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Find flights from Ottawa to London within your budget

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

Travel insights for flights from Ottawa to London

Get recent, data-driven insights about flights from Ottawa to London including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ottawa to London?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to London. Price data was last updated on 10 January 2025.

What is the cheapest month to book a flight from Ottawa to London?

What is the cheapest time of day to fly from YOW to LON?

Find hourly flight availability from Ottawa to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 January 2025.

What is the cheapest day to fly from Ottawa to London?

Use this chart to determine the cheapest time to fly round-trip from Ottawa to London. Price data was last updated on 16 December 2024.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

See what other customers who have flown with KLM, WestJet and Air Canada from Ottawa to London have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ottawa to London?

What are the cheapest airlines flying from Ottawa to London round-trip?

What are the cheapest airlines to fly from Ottawa to London one-way?

What are the most popular routes from Ottawa to London?

What are the cheapest flights from Ottawa to London?

Where are the most common layover locations when flying from Ottawa to London?

What are some popular things to do or see while on a layover in Toronto?

Where are the least popular layover locations for Ottawa to London flights?

Can I find deals for flights from Ottawa to London that include hotel bookings?

How can I find direct flights from Ottawa to London?

Can I find deals for business class flights from Ottawa to London?

What is the cheapest month to book a flight from Ottawa to London?

Travelling to a place near Ottawa?

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Fly from Ottawa to London on these airlines

Choose from the following airlines for your flight from Ottawa to London. Flights are based on user searches made on Cheapflights and were last updated on 17 January 2025.

Top 6 airlines flying from Ottawa to London

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Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.