What are the cheapest airlines to fly from Region of Ontario to United Kingdom one-way?

One-way options have recently been found by users for as low as C$ 219 on WestJet. Other airlines that offer cheap prices include Porter Airlines from C$ 352 and Air Transat from C$ 372 one-way.

How far in advance should I book a flight from Region of Ontario to United Kingdom?

Travellers have found it’s best to book a flight 50 days in advance to save up to 24% 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 50 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 Region of Ontario to United Kingdom 1-2 weeks in advance for as low as C$ 909, or C$ 1,153 for flights within the next 24 hours.

What is the cheapest month to fly from Region of Ontario to United Kingdom?

Flights from Region of Ontario to United Kingdom lean towards being more expensive in December. Prices are generally better when you fly from Region of Ontario to United Kingdom in February, with the cheapest ticket starting at C$ 542.

Can I find deals for flights from Ontario to United Kingdom that include hotel bookings?

Yes. In addition to deals on Ontario to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to United Kingdom?

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

Can I find deals for business class flights from Ontario to United Kingdom?

Yes. Cheapflights offers flight deals from Ontario to United Kingdom 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$ 652+ Flights from Ontario to the United Kingdom

Cheap flight deals from Ontario to United Kingdom

Round-trip from	C$ 672
One-way from	C$ 219
Popular in	December
Cheapest in	February
Average price	C$ 792
Good round-trip deal	C$ 652 or less
Good one-way deal	C$ 347 or less

Icelandair
5/5-13/5
2 total stops
43h 05m total
Ontario to United Kingdom

Search Deals

WestJet
29/7
Nonstop
6h 50m total
Ontario to United Kingdom

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (C$ 25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Ontario to United Kingdom.

Search Deals

Price to beat on a one-way flight from Ontario to United Kingdom.

Search Deals

Find flight deals from Ontario to United Kingdom

Cheapest flights from Ontario to United Kingdom
Explore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.

Mon 5/511:00 p.m.YYZ - LHR

1 stop16h 20mIcelandair

Tue 13/59:25 p.m.LHR - YYZ

1 stop26h 45mIcelandair

Deal found 26/3C$ 672

Wed 30/410:45 p.m.YYZ - LGW

Nonstop7h 00mPorter Airlines

Fri 2/511:35 a.m.LGW - YYZ

1 stop10h 50mPorter Airlines

Deal found 26/3C$ 672

Wed 4/69:00 p.m.YTZ - LGW

1 stop31h 50mAir Transat

Tue 10/611:35 a.m.LGW - YTZ

1 stop11h 35mAir Transat

Deal found 27/3C$ 673

Thu 8/57:40 a.m.YYZ - LGW

1 stop21h 10mAir Transat

Fri 30/512:40 p.m.LGW - YYZ

Nonstop8h 00mAir Transat

Deal found 27/3C$ 675

Tue 27/510:15 p.m.YYZ - STN

1 stop11h 45mMultiple Airlines

Sat 14/610:00 p.m.STN - YYZ

1 stop21h 10mMultiple Airlines

Deal found 27/3C$ 676

Sat 10/54:40 p.m.YTZ - LGW

1 stop12h 10mPorter Airlines

Wed 11/611:35 a.m.LGW - YTZ

1 stop11h 35mPorter Airlines

Deal found 27/3C$ 677

Mon 5/511:00 p.m.YYZ - LGW

1 stop10h 35mIcelandair

Wed 21/53:40 p.m.LGW - YYZ

1 stop11h 15mIcelandair

Deal found 28/3C$ 685

Mon 5/54:20 p.m.YTZ - LHR

1 stop9h 10mAir Canada

Sun 11/58:45 a.m.LHR - YTZ

2 stops14h 05mAir Canada

Deal found 26/3C$ 690

Tue 27/510:15 p.m.YYZ - LHR

1 stop19h 20mMultiple Airlines

Mon 9/66:20 a.m.LHR - YYZ

1 stop12h 50mMultiple Airlines

Deal found 27/3C$ 699

Tue 1/48:15 p.m.YYZ - LGW

1 stop32h 45mMultiple Airlines

Thu 24/42:00 p.m.LGW - YYZ

1 stop31h 25mMultiple Airlines

Deal found 27/3C$ 703

Mon 5/511:35 p.m.YYZ - LHR

Nonstop7h 15mAir Canada

Thu 15/58:40 a.m.LHR - YYZ

1 stop12h 45mAir Canada

Deal found 27/3C$ 716

Mon 26/54:20 p.m.YTZ - LHR

1 stop9h 10mMultiple Airlines

Mon 2/66:00 a.m.LHR - YTZ

2 stops18h 50mMultiple Airlines

Deal found 26/3C$ 725

Best flights from Ontario to United Kingdom
Discover carefully curated flight deals from Ontario to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 28 March 2025.

Mon 5/511:00 p.m.YYZ - LHR

1 stop16h 20mIcelandair

Tue 13/59:25 p.m.LHR - YYZ

1 stop26h 45mIcelandair

Deal found 26/3C$ 672

Wed 30/410:45 p.m.YYZ - LGW

Nonstop7h 00mPorter Airlines

Fri 2/511:35 a.m.LGW - YYZ

1 stop10h 50mPorter Airlines

Deal found 26/3C$ 672

Wed 4/69:00 p.m.YTZ - LGW

1 stop31h 50mAir Transat

Tue 10/611:35 a.m.LGW - YTZ

1 stop11h 35mAir Transat

Deal found 27/3C$ 673

Tue 27/510:15 p.m.YYZ - STN

1 stop11h 45mMultiple Airlines

Sat 14/610:00 p.m.STN - YYZ

1 stop21h 10mMultiple Airlines

Deal found 27/3C$ 676

Mon 5/58:50 a.m.YTZ - LHR

1 stop16h 40mAir Canada

Thu 15/58:40 a.m.LHR - YTZ

2 stops14h 10mAir Canada

Deal found 27/3C$ 693

Wed 21/510:00 p.m.YYZ - LHR

Nonstop7h 15mBritish Airways

Sat 31/55:15 p.m.LHR - YYZ

Nonstop7h 55mBritish Airways

Deal found 28/3C$ 725

Wed 9/410:00 p.m.YYZ - LHR

Nonstop7h 15mAmerican Airlines

Fri 18/45:15 p.m.LHR - YYZ

Nonstop7h 55mAmerican Airlines

Deal found 27/3C$ 750

Wed 23/410:40 p.m.YYZ - LHR

1 stop26h 50mLufthansa

Wed 30/45:40 p.m.LHR - YYZ

1 stop26h 14mLufthansa

Deal found 27/3C$ 755

Thu 8/56:00 a.m.YYZ - LGW

2 stops21h 35mFinnair

Fri 30/53:05 p.m.LGW - YYZ

2 stops25h 50mFinnair

Deal found 27/3C$ 765

Mon 26/55:35 p.m.YYZ - LGW

1 stop10h 50mWestJet

Mon 2/610:35 a.m.LGW - YYZ

1 stop11h 35mWestJet

Deal found 27/3C$ 780

Wed 7/54:30 p.m.YUL - LCY

2 stops19h 45mSWISS

Mon 19/59:25 a.m.LCY - YUL

1 stop10h 35mSWISS

Deal found 26/3C$ 799

Fri 9/511:15 a.m.YUL - LHR

2 stops15h 00mUnited Airlines

Fri 16/56:50 a.m.LHR - YUL

2 stops15h 08mUnited Airlines

Deal found 26/3C$ 812

Direct flights from Ontario to United Kingdom
Explore direct flight options from Ontario to United Kingdom based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 March 2025.

Wed 30/410:45 p.m.YYZ - LGW

Nonstop7h 00mPorter Airlines

Fri 2/512:40 p.m.LGW - YYZ

Nonstop8h 00mPorter Airlines

Deal found 26/3C$ 672

Sun 25/510:45 p.m.YYZ - LGW

Nonstop7h 00mAir Transat

Fri 6/612:40 p.m.LGW - YYZ

Nonstop8h 00mAir Transat

Deal found 27/3C$ 677

Mon 19/56:05 p.m.YYZ - LHR

Nonstop7h 10mBritish Airways

Mon 9/65:15 p.m.LHR - YYZ

Nonstop7h 55mBritish Airways

Deal found 26/3C$ 723

Thu 24/46:20 p.m.YYZ - LHR

Nonstop7h 15mMultiple Airlines

Wed 7/53:50 p.m.LHR - YYZ

Nonstop7h 55mMultiple Airlines

Deal found 26/3C$ 736

Wed 4/66:20 p.m.YYZ - LHR

Nonstop7h 15mAir Canada

Tue 10/63:50 p.m.LHR - YYZ

Nonstop7h 55mAir Canada

Deal found 27/3C$ 738

Wed 9/410:00 p.m.YYZ - LHR

Nonstop7h 15mAmerican Airlines

Wed 16/45:15 p.m.LHR - YYZ

Nonstop7h 55mAmerican Airlines

Deal found 27/3C$ 750

Thu 24/46:20 p.m.YYZ - LHR

Nonstop7h 15mLufthansa

Sat 10/58:30 a.m.LHR - YYZ

Nonstop7h 50mLufthansa

Deal found 28/3C$ 759

Sun 11/510:25 p.m.YUL - LHR

Nonstop6h 35mAir Canada

Wed 21/59:30 a.m.LHR - YUL

Nonstop7h 10mAir Canada

Deal found 27/3C$ 798

Sat 17/510:05 p.m.YUL - LGW

Nonstop6h 45mAir Transat

Sat 31/511:35 a.m.LGW - YUL

Nonstop7h 40mAir Transat

Deal found 26/3C$ 799

Thu 22/510:05 p.m.YUL - LHR

Nonstop6h 40mBritish Airways

Tue 27/56:05 p.m.LHR - YUL

Nonstop7h 10mBritish Airways

Deal found 27/3C$ 799

Fri 2/510:25 p.m.YUL - LHR

Nonstop6h 35mLufthansa

Sat 17/59:30 a.m.LHR - YUL

Nonstop7h 10mLufthansa

Deal found 27/3C$ 803

Thu 10/410:30 p.m.YYZ - LHR

Nonstop7h 10mVirgin Atlantic

Sat 19/45:50 p.m.LHR - YYZ

Nonstop7h 50mVirgin Atlantic

Deal found 27/3C$ 813

Last-minute flights from Ontario to United Kingdom
Discover last-minute flight deals from Ontario to United Kingdom. Data last updated 28 March 2025 and is based on user searches.

Tue 1/410:20 p.m.YUL - LHR

Nonstop6h 40mAir Canada

Tue 8/48:45 a.m.LHR - YUL

1 stop11h 15mAir Canada

Deal found 27/3C$ 803

Tue 1/48:15 p.m.YYZ - LGW

1 stop32h 45mMultiple Airlines

Thu 24/42:00 p.m.LGW - YYZ

1 stop31h 25mMultiple Airlines

Deal found 27/3C$ 703

Wed 2/412:30 p.m.YYZ - LGW

1 stop16h 30mMultiple Airlines

Thu 24/42:00 p.m.LGW - YYZ

1 stop31h 25mMultiple Airlines

Deal found 27/3C$ 716

Wed 2/45:05 p.m.YYZ - LHR

1 stop10h 30mAir Canada

Tue 15/48:45 a.m.LHR - YYZ

1 stop12h 35mAir Canada

Deal found 27/3C$ 778

Wed 2/46:00 a.m.YYZ - LHR

1 stop22h 25mBritish Airways

Wed 9/46:30 a.m.LHR - YYZ

2 stops20h 10mBritish Airways

Deal found 26/3C$ 802

Thu 3/410:35 p.m.YYZ - LGW

Nonstop7h 10mPorter Airlines

Thu 17/412:40 p.m.LGW - YYZ

Nonstop8h 20mPorter Airlines

Deal found 27/3C$ 705

Thu 3/43:25 p.m.YTZ - LHR

1 stop13h 35mAir Canada

Thu 24/48:40 a.m.LHR - YTZ

2 stops14h 10mAir Canada

Deal found 26/3C$ 756

Sat 5/410:35 p.m.YYZ - LGW

Nonstop7h 10mAir Transat

Thu 24/412:40 p.m.LGW - YYZ

Nonstop8h 20mAir Transat

Deal found 27/3C$ 732

Sat 5/410:00 p.m.YYZ - LHR

Nonstop7h 15mAmerican Airlines

Thu 24/45:20 p.m.LHR - YYZ

Nonstop7h 55mAmerican Airlines

Deal found 27/3C$ 749

Sat 5/411:45 a.m.YYZ - LGW

2 stops15h 50mFinnair

Mon 21/42:00 p.m.LGW - YYZ

2 stops26h 55mFinnair

Deal found 27/3C$ 765

Sat 5/44:00 p.m.YYZ - LHR

1 stop9h 30mMultiple Airlines

Thu 24/45:40 p.m.LHR - YYZ

Nonstop7h 50mMultiple Airlines

Deal found 27/3C$ 779

Sun 6/410:20 p.m.YUL - LHR

Nonstop6h 40mMultiple Airlines

Wed 7/59:00 a.m.LHR - YUL

1 stop17h 00mMultiple Airlines

Deal found 27/3C$ 802

One-way flights from Ontario to United Kingdom
Search for one-way flight options from Ontario to United Kingdom. Find affordable one-way fares based on user searches. Data last updated 28 March 2025.

Tue 29/79:15 p.m.YYZ - EDI

Nonstop6h 50mWestJet

Deal found 27/3C$ 219

Wed 4/610:10 p.m.YYZ - EDI

1 stop13h 50mMultiple Airlines

Deal found 27/3C$ 340

Tue 27/510:15 p.m.YYZ - LHR

1 stop19h 20mMultiple Airlines

Deal found 27/3C$ 343

Tue 27/510:15 p.m.YYZ - LGW

2 stops18h 00mMultiple Airlines

Deal found 27/3C$ 344

Wed 18/67:30 p.m.YYZ - LGW

1 stop8h 55mWestJet

Deal found 27/3C$ 347

Thu 5/610:10 p.m.YYZ - STN

1 stop19h 15mMultiple Airlines

Deal found 27/3C$ 349

Mon 26/54:40 p.m.YTZ - LGW

1 stop12h 10mPorter Airlines

Deal found 27/3C$ 352

Sun 6/47:00 a.m.YTZ - LGW

2 stops22h 10mMultiple Airlines

Deal found 28/3C$ 357

Mon 26/510:45 p.m.YYZ - LGW

Nonstop7h 00mPorter Airlines

Deal found 27/3C$ 359

Mon 12/511:15 p.m.YYZ - LGW

1 stop29h 35mAir Transat

Deal found 27/3C$ 372

Mon 26/510:15 p.m.YYZ - LCY

1 stop16h 35mMultiple Airlines

Deal found 27/3C$ 376

Sun 25/59:00 p.m.YTZ - LGW

1 stop31h 50mAir Transat

Deal found 27/3C$ 383

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 5/5

11:00 p.m.-8:20 p.m.

1 stop16h 20m

London Heathrow

Tue 13/5

9:25 p.m.-7:10 p.m.

1 stop26h 45m

C$ 672

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Wed 30/4

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

Nonstop7h 00m

London Gatwick

Fri 2/5

11:35 a.m.-5:25 p.m.

1 stop10h 50m

C$ 672

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

Wed 4/6

9:00 p.m.-9:50 a.m.

1 stop31h 50m

London Gatwick

Tue 10/6

11:35 a.m.-6:10 p.m.

1 stop11h 35m

C$ 673

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Thu 8/5

7:40 a.m.-9:50 a.m.

1 stop21h 10m

London Gatwick

Fri 30/5

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

Nonstop8h 00m

C$ 675

TorontoLondon

YYZ - STN

YYZSTN

Toronto Pearson Intl

Tue 27/5

10:15 p.m.-3:00 p.m.

1 stop11h 45m

London Stansted

Sat 14/6

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

1 stop21h 10m

C$ 676

TorontoLondon

YTZ - LGW

YTZLGW

Toronto Island

Sat 10/5

4:40 p.m.-9:50 a.m.

1 stop12h 10m

London Gatwick

Wed 11/6

11:35 a.m.-6:10 p.m.

1 stop11h 35m

C$ 677

TorontoLondon

YYZ - LGW

YYZLGW

Toronto Pearson Intl

Tue 20/5

8:50 p.m.-2:40 p.m.

1 stop12h 50m

London Gatwick

Thu 29/5

3:40 p.m.-9:55 p.m.

1 stop11h 15m

C$ 685

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Mon 5/5

8:50 a.m.-6:30 a.m.

1 stop16h 40m

London Heathrow

Thu 15/5

8:40 a.m.-5:50 p.m.

2 stops14h 10m

C$ 693

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Tue 27/5

10:15 p.m.-10:35 p.m.

1 stop19h 20m

London Heathrow

Mon 9/6

6:20 a.m.-2:10 p.m.

1 stop12h 50m

C$ 699

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Mon 5/5

11:35 p.m.-11:50 a.m.

Nonstop7h 15m

London Heathrow

Thu 15/5

8:40 a.m.-4:25 p.m.

1 stop12h 45m

C$ 716

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/3

Showing 1-10 of 60 results

...

Best time to book a flight from Ontario to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Ontario 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to the United Kingdom

What is the cheapest month to book a flight from Region of Ontario to United Kingdom?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 560). Flying from Region of Ontario to United Kingdom 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 ON to GB?

When flying from Region of Ontario to United Kingdom, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in United Kingdom by month

In terms of precipitation, rainfall in United Kingdom 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 United Kingdom when rainfall is around 40.0 mm.

Temperature in United Kingdom by month

If weather is an important factor for your trip to United Kingdom, 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 United Kingdom

Read reviews from past customers who have flown Delta, Porter Airlines and KLM from Ontario to United Kingdom. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,897 reviews

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines

7.9

Good

276 reviews

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat

7.8

Good

381 reviews

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Azores Airlines

7.6

Good

63 reviews

Delta

8.0

Very good

7,897 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Region of Ontario to United Kingdom one-way?
One-way options have recently been found by users for as low as C$ 219 on WestJet. Other airlines that offer cheap prices include Porter Airlines from C$ 352 and Air Transat from C$ 372 one-way.
Can I find deals for flights from Ontario to United Kingdom that include hotel bookings?
Yes. In addition to deals on Ontario to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to United Kingdom?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to United Kingdom.
Can I find deals for business class flights from Ontario to United Kingdom?
Yes. Cheapflights offers flight deals from Ontario to United Kingdom 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 Region of Ontario to United Kingdom?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to United Kingdom (average of C$ 560). Flying from Region of Ontario to United Kingdom 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Ontario to United Kingdom

Airline	Cheapest	Average	Flexibility	On-time
Finnair	CheapestC$ 503	AverageC$ 1,117	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
PLAY	CheapestC$ 514	AverageC$ 692	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
TAP AIR PORTUGAL	CheapestC$ 548	AverageC$ 706	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Icelandair	CheapestC$ 637	AverageC$ 964	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Transat	CheapestC$ 659	AverageC$ 1,073	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
WestJet	CheapestC$ 665	AverageC$ 934	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Aer Lingus	CheapestC$ 665	AverageC$ 1,019	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Porter Airlines	CheapestC$ 672	AverageC$ 1,021	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Delta	CheapestC$ 693	AverageC$ 994	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
United Airlines	CheapestC$ 699	AverageC$ 1,240	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ontario to United Kingdom?

Deals for Ontario to United Kingdom flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Ontario to United Kingdom?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to United Kingdom from Ontario.

Can Cheapflights find flights from Ontario to United Kingdom with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to United Kingdom, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario to United Kingdom become cheaper?

Yes, Cheapflights offers price alerts on Ontario to United Kingdom flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Ontario to the United Kingdom from C$ 219

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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to United Kingdom

Keep the following information in mind while searching for Ontario to United Kingdom flight deals. Data was last updated 28 March 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ontario to United Kingdom

Cheapest flights from Ontario to United KingdomExplore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.

Explore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to the United Kingdom that are best for you.

Best time to book a flight from Ontario to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to the United Kingdom

What is the cheapest month to book a flight from Region of Ontario to United Kingdom?

What is the cheapest time of day to fly from ON to GB?

Find hourly flight availability from Ontario to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 March 2025.

Rainfall in United Kingdom by month

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

Temperature in United Kingdom by month

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

Reviews of airlines servicing United Kingdom

Read reviews from past customers who have flown Delta, Porter Airlines and KLM from Ontario to United Kingdom. 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 Ontario to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Region of Ontario to United Kingdom one-way?

Can I find deals for flights from Ontario to United Kingdom that include hotel bookings?

How can I find direct flights from Ontario to United Kingdom?

Can I find deals for business class flights from Ontario to United Kingdom?

What is the cheapest month to book a flight from Region of Ontario to United Kingdom?

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Alternative routes for Ontario to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Ontario to United Kingdom

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Cheapest flights from Ontario to United Kingdom
Explore the most affordable flight options available from Ontario to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 March 2025.