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

Our cheapest airline available from London to Ottawa is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 744 on this airline. Additional options worth looking into are KLM and Lufthansa, starting at C$ 773 and C$ 810 round-trip. These flights start at 30% lower than the current average price 3 months from now.

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

C$ 554 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Lufthansa, with prices starting from C$ 722 and C$ 926, respectively.

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

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

What are the most popular routes from London to Ottawa?

When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.

What are the cheapest flights from London to Ottawa?

The cheapest flight price from London to Ottawa is C$ 975. On average you can expect to pay C$ 1,905. The most popular route, (London Heathrow - Ottawa), can usually be booked for C$ 697.

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

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Ottawa. Check prices with Cheapflights to find a great deal for your trip.

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

Travellers have found it’s best to book a flight 43 days in advance to save up to 39% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 43 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Ottawa 1-2 weeks in advance for as low as C$ 1,034, or C$ 1,260 for flights within the next 24 hours.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Ottawa. Flights to Ottawa from London in January are about C$ 1,077 on average during January, but can be found for as low as C$ 712.

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

Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from London to Ottawa. 2 airlines have flights to Ottawa from London on a regular basis. Booking flights from London to Ottawa should not be difficult; the airport handles an average of 0 inbound flights from London per day.

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

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

How can I find direct flights from London to Ottawa?

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

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

Yes. Cheapflights offers flight deals from London to Ottawa 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$ 453+ Flights from London to Ottawa

The best prices from London to Ottawa are usually found in January or February, booked 42 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from London to Ottawa

Round-trip from	C$ 729
One-way from	C$ 453
Popular in	August
Cheapest in	January
Average price	C$ 892
Good round-trip deal	C$ 984 or less
Good one-way deal	C$ 1,076 or less

Air France
9/5-12/5
2 total stops
29h 52m total
London to Ottawa

Search Deals

22/5
2 total stops
22h 27m total
London to Ottawa

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (C$ 249 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Ottawa.

Search Deals

Price to beat on a one-way flight from London (LON) to Ottawa.

Search Deals

Find flight deals from London to Ottawa

Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Fri 9/55:50 p.m.LHR - YOW

1 stop11h 32mMultiple Airlines

Mon 12/55:15 p.m.YOW - LHR

1 stop18h 20mMultiple Airlines

Deal found 19/2C$ 729

Mon 3/32:45 p.m.LHR - YOW

1 stop29h 25mVirgin Atlantic

Mon 10/36:20 p.m.YOW - LHR

1 stop15h 25mVirgin Atlantic

Deal found 19/2C$ 744

Fri 9/55:50 p.m.LHR - YOW

1 stop11h 32mKLM

Mon 12/55:15 p.m.YOW - LHR

2 stops12h 30mKLM

Deal found 19/2C$ 773

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

1 stop11h 10mAir France

Mon 31/35:15 p.m.YOW - LHR

1 stop15h 30mAir France

Deal found 19/2C$ 804

Mon 31/311:30 a.m.LHR - YOW

2 stops17h 14mLufthansa

Mon 7/46:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 20/2C$ 810

Sat 19/45:40 p.m.LHR - YOW

1 stop10h 17mAir Canada

Sun 27/47:15 a.m.YOW - LHR

1 stop8h 45mAir Canada

Deal found 19/2C$ 811

Fri 25/412:40 p.m.LGW - YOW

1 stop17h 00mAir Transat

Tue 29/45:05 p.m.YOW - LGW

1 stop12h 40mAir Transat

Deal found 20/2C$ 848

Tue 13/56:40 p.m.LHR - YOW

2 stops31h 29mSWISS

Sun 18/51:55 p.m.YOW - LHR

2 stops22h 55mSWISS

Deal found 20/2C$ 884

Wed 2/47:25 a.m.LHR - YOW

2 stops21h 28mUnited Airlines

Thu 10/46:33 a.m.YOW - LHR

2 stops18h 22mUnited Airlines

Deal found 19/2C$ 895

Mon 3/36:45 p.m.LGW - YOW

2 stops29h 37mSWISS

Mon 10/36:10 p.m.YOW - LGW

2 stops19h 40mSWISS

Deal found 19/2C$ 908

Thu 24/43:40 p.m.LGW - YOW

2 stops37h 29mMultiple Airlines

Tue 29/45:55 a.m.YOW - LGW

2 stops27h 45mMultiple Airlines

Deal found 20/2C$ 913

Tue 13/58:25 a.m.LCY - YOW

2 stops17h 44mSWISS

Sun 18/53:55 p.m.YOW - LCY

2 stops20h 35mSWISS

Deal found 20/2C$ 926

Best flights from London to Ottawa
Discover carefully curated flight deals from London to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 February 2025.

Fri 9/55:50 p.m.LHR - YOW

1 stop11h 32mMultiple Airlines

Mon 12/55:15 p.m.YOW - LHR

1 stop18h 20mMultiple Airlines

Deal found 19/2C$ 729

Mon 3/32:45 p.m.LHR - YOW

1 stop29h 25mVirgin Atlantic

Mon 10/36:20 p.m.YOW - LHR

1 stop15h 25mVirgin Atlantic

Deal found 19/2C$ 744

Fri 9/55:50 p.m.LHR - YOW

1 stop11h 32mKLM

Mon 12/55:15 p.m.YOW - LHR

2 stops12h 30mKLM

Deal found 19/2C$ 773

Mon 31/311:30 a.m.LHR - YOW

2 stops17h 14mLufthansa

Mon 7/42:45 p.m.YOW - LHR

1 stop14h 15mLufthansa

Deal found 20/2C$ 810

Sat 19/45:40 p.m.LHR - YOW

1 stop10h 17mAir Canada

Sun 27/47:15 a.m.YOW - LHR

1 stop8h 45mAir Canada

Deal found 19/2C$ 811

Fri 25/412:40 p.m.LGW - YOW

1 stop17h 00mAir Transat

Tue 29/45:05 p.m.YOW - LGW

1 stop12h 40mAir Transat

Deal found 20/2C$ 848

Mon 2/65:35 p.m.LHR - YOW

1 stop26h 30mAir France

Thu 12/65:15 p.m.YOW - LHR

1 stop18h 20mAir France

Deal found 19/2C$ 859

Tue 13/56:40 p.m.LHR - YOW

2 stops31h 29mSWISS

Sun 18/51:55 p.m.YOW - LHR

2 stops22h 55mSWISS

Deal found 20/2C$ 884

Wed 2/47:25 a.m.LHR - YOW

2 stops21h 28mUnited Airlines

Thu 10/46:33 a.m.YOW - LHR

2 stops18h 22mUnited Airlines

Deal found 19/2C$ 895

Fri 30/56:50 a.m.LHR - YOW

2 stops11h 55mBrussels Airlines

Sat 7/67:55 p.m.YOW - LHR

1 stop29h 40mBrussels Airlines

Deal found 19/2C$ 925

Sat 29/36:00 a.m.LHR - YOW

2 stops17h 22mAustrian Airlines

Sat 12/44:00 p.m.YOW - LHR

1 stop14h 50mAustrian Airlines

Deal found 18/2C$ 1,038

Mon 2/610:45 a.m.LGW - YOW

2 stops18h 37mWestJet

Thu 12/65:55 a.m.YOW - LGW

2 stops22h 30mWestJet

Deal found 19/2C$ 1,155

Direct flights from London to Ottawa
Explore direct flight options from London to Ottawa based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 February 2025.

Mon 21/42:05 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Mon 28/46:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Deal found 19/2C$ 812

Mon 31/32:05 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Mon 7/46:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Deal found 20/2C$ 861

Last-minute flights from London to Ottawa
Discover last-minute flight deals from London to Ottawa. Data last updated 20 February 2025 and is based on user searches.

Thu 20/211:40 a.m.LGW - YOW

1 stop11h 40mAir Transat

Thu 27/22:50 p.m.YOW - LGW

1 stop13h 55mAir Transat

Deal found 19/2C$ 866

Tue 25/211:40 a.m.LGW - YOW

1 stop18h 00mAir Transat

Mon 31/36:15 a.m.YOW - LGW

1 stop23h 30mAir Transat

Deal found 19/2C$ 918

Tue 25/210:15 a.m.LGW - YOW

2 stops40h 53mTurkish Airlines

Mon 31/34:00 p.m.YOW - LGW

2 stops25h 20mTurkish Airlines

Deal found 19/2C$ 3,930

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

1 stop11h 10mAir France

Mon 31/35:15 p.m.YOW - LHR

1 stop15h 30mAir France

Deal found 19/2C$ 804

Fri 28/22:00 p.m.LGW - YOW

2 stops30h 55mMultiple Airlines

Fri 14/35:55 a.m.YOW - LGW

1 stop23h 50mMultiple Airlines

Deal found 19/2C$ 1,149

Fri 28/29:25 a.m.LCY - YOW

2 stops27h 12mMultiple Airlines

Fri 14/311:00 a.m.YOW - LCY

2 stops16h 50mMultiple Airlines

Deal found 19/2C$ 1,514

Fri 28/211:10 a.m.LHR - YOW

1 stop11h 12mAir Canada

Mon 31/37:15 a.m.YOW - LHR

1 stop8h 45mAir Canada

Deal found 19/2C$ 820

Sat 1/38:30 a.m.LCY - YOW

2 stops15h 52mSWISS

Mon 3/34:00 p.m.YOW - LCY

2 stops15h 50mSWISS

Deal found 19/2C$ 1,564

Mon 3/32:45 p.m.LHR - YOW

1 stop29h 25mVirgin Atlantic

Mon 10/36:20 p.m.YOW - LHR

1 stop15h 25mVirgin Atlantic

Deal found 19/2C$ 744

Mon 3/36:30 a.m.LHR - YOW

2 stops13h 40mMultiple Airlines

Mon 10/36:20 p.m.YOW - LHR

1 stop15h 25mMultiple Airlines

Deal found 19/2C$ 812

Mon 3/36:30 a.m.LHR - YOW

2 stops13h 40mKLM

Mon 10/36:20 p.m.YOW - LHR

2 stops15h 30mKLM

Deal found 19/2C$ 842

Mon 3/36:45 p.m.LGW - YOW

2 stops29h 37mSWISS

Mon 10/36:10 p.m.YOW - LGW

2 stops19h 40mSWISS

Deal found 19/2C$ 908

One-way flights from London to Ottawa
Search for one-way flight options from London to Ottawa. Find affordable one-way fares based on user searches. Data last updated 20 February 2025.

Thu 22/56:55 a.m.STN - YOW

2 stops22h 27mMultiple Airlines

Deal found 19/2C$ 453

Mon 19/59:20 p.m.LGW - YOW

2 stops41h 11mMultiple Airlines

Deal found 19/2C$ 493

Wed 21/56:15 a.m.LHR - YOW

2 stops23h 07mMultiple Airlines

Deal found 19/2C$ 507

Wed 21/56:45 a.m.LCY - YOW

2 stops22h 37mMultiple Airlines

Deal found 19/2C$ 537

Mon 12/510:45 a.m.LGW - YOW

2 stops18h 37mWestJet

Deal found 19/2C$ 554

Tue 4/32:50 p.m.LHR - YOW

1 stop14h 54mWestJet

Deal found 19/2C$ 598

Mon 12/512:40 p.m.LGW - YOW

1 stop13h 21mAir Transat

Deal found 19/2C$ 722

Wed 16/412:40 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 19/2C$ 926

Sat 1/37:50 a.m.LHR - YOW

2 stops16h 32mAer Lingus

Deal found 19/2C$ 959

Fri 14/36:50 a.m.LCY - YOW

2 stops18h 47mAer Lingus

Deal found 19/2C$ 1,143

Sat 1/38:30 a.m.LCY - YOW

2 stops18h 42mSWISS

Deal found 19/2C$ 1,352

Sun 25/51:45 p.m.LCY - YOW

2 stops16h 07mKLM

Deal found 19/2C$ 1,632

Find flights from London to Ottawa within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 9/5

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Mon 12/5

5:15 p.m.-4:35 p.m.

1 stop18h 20m

C$ 729

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 3/3

2:45 p.m.-3:10 p.m.

1 stop29h 25m

Ottawa

Mon 10/3

6:20 p.m.-1:45 p.m.

1 stop15h 25m

C$ 744

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Fri 9/5

5:50 p.m.-12:22 a.m.

1 stop11h 32m

Ottawa

Mon 12/5

5:15 p.m.-10:45 a.m.

2 stops12h 30m

C$ 773

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 31/3

11:30 a.m.-11:44 p.m.

2 stops17h 14m

Ottawa

Mon 7/4

2:45 p.m.-10:00 a.m.

1 stop14h 15m

C$ 810

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Sat 19/4

5:40 p.m.-10:57 p.m.

1 stop10h 17m

Ottawa

Sun 27/4

7:15 a.m.-9:00 p.m.

1 stop8h 45m

C$ 811

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Fri 25/4

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

1 stop17h 00m

Ottawa

Tue 29/4

5:05 p.m.-10:45 a.m.

1 stop12h 40m

C$ 848

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Mon 2/6

5:35 p.m.-3:05 p.m.

1 stop26h 30m

Ottawa

Thu 12/6

5:15 p.m.-4:35 p.m.

1 stop18h 20m

C$ 859

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Tue 13/5

6:40 p.m.-9:09 p.m.

2 stops31h 29m

Ottawa

Sun 18/5

1:55 p.m.-5:50 p.m.

2 stops22h 55m

C$ 884

LondonOttawa

LHR - YOW

LHRYOW

London Heathrow

Wed 2/4

7:25 a.m.-11:53 p.m.

2 stops21h 28m

Ottawa

Thu 10/4

6:33 a.m.-5:55 a.m.

2 stops18h 22m

C$ 895

LondonOttawa

LGW - YOW

LGWYOW

London Gatwick

Mon 3/3

6:45 p.m.-7:22 p.m.

2 stops29h 37m

Ottawa

Mon 10/3

6:10 p.m.-5:50 p.m.

2 stops19h 40m

C$ 908

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 38 results

Best time to book a flight from London to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from London 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 London to Ottawa

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

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

The price you pay for your flight from London to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 224). Flying from London to Ottawa in March is currently the most expensive (average of C$ 329). 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 LON to YOW?

A simple way to save on the total cost of your ticket is to fly from London to Ottawa in the afternoon. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight in the morning.

Rainfall in Ottawa by month

In terms of precipitation, rainfall in Ottawa ranges from 50.0 - 93.0 mm per month. June is typically the wettest month, when rainfall can reach 93.0 mm. February is typically the driest time to visit Ottawa when rainfall is around 50.0 mm.

Temperature in Ottawa by month

If weather is an important factor for your trip to Ottawa, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -10.0 C).

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to Ottawa to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Delta

8.0

Very good

8,219 reviews

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Air Transat

7.8

Good

380 reviews

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Austrian Airlines

7.6

Good

773 reviews

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

SWISS

7.5

Good

1,568 reviews

Delta

8.0

Very good

8,219 reviews

Check prices

Reviews

1 / 20

6.0

Good

Moishe,Oct 2024

LGA - DEN

The plane had a mechanical error that delayed us by almost an hour. On the positive side the captain kept us all in the know

Related info for your journey

What airport do you fly into for flights to Ottawa from London?
Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from London to Ottawa. 2 airlines have flights to Ottawa from London on a regular basis. Booking flights from London to Ottawa should not be difficult; the airport handles an average of 0 inbound flights from London per day.
What are the cheapest airlines flying from London to Ottawa round-trip?
Our cheapest airline available from London to Ottawa is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 744 on this airline. Additional options worth looking into are KLM and Lufthansa, starting at C$ 773 and C$ 810 round-trip. These flights start at 30% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Ottawa one-way?
C$ 554 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Transat and Lufthansa, with prices starting from C$ 722 and C$ 926, respectively.
What are the most popular routes from London to Ottawa?
When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.
What are the cheapest flights from London to Ottawa?
The cheapest flight price from London to Ottawa is C$ 975. On average you can expect to pay C$ 1,905. The most popular route, (London Heathrow - Ottawa), can usually be booked for C$ 697.
Can I find deals for flights from London to Ottawa that include hotel bookings?
Yes. In addition to deals on London to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Ottawa?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ottawa.
Can I find deals for business class flights from London to Ottawa?
Yes. Cheapflights offers flight deals from London to Ottawa 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 London to Ottawa?
Currently, October is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 224). Flying from London to Ottawa in March is currently the most expensive (average of C$ 329). 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

Gatineau

Perth

Smiths Falls

Prescott

Brockville

Wakefield

Lanark

Browse thousands of different options on Cheapflights for your next trip

Other flights to Ottawa

Top 2 airlines flying from London to Ottawa

Airline	Cheapest	Average	Flexibility	On-time
Air France	CheapestC$ 819	AverageC$ 1,010	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 963	AverageC$ 1,164	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

When you search for this flight from London to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights helps you find that perfect flight to Ottawa from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Ottawa flexibly with Cheapflights today.

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

Yes! Start tracking prices for London to Ottawa 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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Ottawa from C$ 453

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from London to Ottawa are usually found in January or February, booked 42 days in advance, depart on a Monday or Tuesday and return on a Friday

Cheap flight deals from London to Ottawa

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to Ottawa

Cheapest flights from London to OttawaExplore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Find flights from London to Ottawa within your budget

Best time to book a flight from London to Ottawa

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

Travel insights for flights from London to Ottawa

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

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

Use this chart to determine the optimal time to book a round-trip flight from London to Ottawa. Price data was last updated on 14 February 2025.

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

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

Find hourly flight availability from London to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

Rainfall in Ottawa by month

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

Temperature in Ottawa by month

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

Reviews of airlines servicing Ottawa

Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to Ottawa to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Ottawa. 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 into for flights to Ottawa from London?

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

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

What are the most popular routes from London to Ottawa?

What are the cheapest flights from London to Ottawa?

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

How can I find direct flights from London to Ottawa?

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

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

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Alternative routes for London to Ottawa

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Top 2 airlines flying from London to Ottawa

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Cheapest flights from London to Ottawa
Explore the most affordable flight options available from London to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.