Find cheap flights from Ontario to the United Kingdom from £373
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to the United Kingdom departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Return
1 adult
Economy
0 bags
Sun 26/5
Sun 2/6
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In the last 7 days, travellers have searched 44,335,567 times on KAYAK, and here's why:
Save 28% or moreCompare multiple travel sites with one search.
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (13% more expensive on average)
Flight from Ontario to London Gatwick Airport
FAQs - booking United Kingdom flights
How does KAYAK find such low prices on flights from Ontario to the United Kingdom?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to the United Kingdom.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to the United Kingdom?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United Kingdom from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to the United Kingdom?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to the United Kingdom with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to the United Kingdom?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to the United Kingdom from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
See more FAQs
Top tips for finding a cheap flight from Ontario to the United Kingdom
Morning departure is around 36% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days
Book cheap flights from Ontario to the United Kingdom
Cheapest flights to the United Kingdom from Ontario found in 2024
Recent return flight deals
9/10Wed
1 stopIberia
13h 44mONT-LHR
23/10Wed
2 stopsIberia
20h 36mLHR-ONT
£520
23/10Wed
1 stopVirgin Atlantic
19h 20mONT-LHR
1/11Fri
2 stopsVirgin Atlantic
18h 43mLHR-ONT
£528
9/10Wed
1 stopBritish Airways
16h 00mONT-LHR
25/10Fri
2 stopsBritish Airways
21h 17mLHR-ONT
£532
9/10Wed
1 stopKLM
16h 30mONT-LHR
23/10Wed
1 stopKLM
15h 47mLHR-ONT
£534
9/10Wed
2 stopsUnited Airlines
16h 22mONT-LHR
23/10Wed
2 stopsUnited Airlines
28h 42mLHR-ONT
£537
9/10Wed
2 stopsDelta
15h 33mONT-LHR
25/10Fri
2 stopsDelta
18h 18mLHR-ONT
£538
1/10Tue
1 stopUnited Airlines
15h 37mONT-LHR
16/10Wed
1 stopUnited Airlines
15h 41mLHR-ONT
£550
29/9Sun
1 stopBritish Airways
15h 53mONT-LHR
11/10Fri
1 stopBritish Airways
16h 53mLHR-ONT
£561
21/8Wed
1 stopDelta
15h 25mONT-LHR
13/9Fri
2 stopsDelta
20h 52mLHR-ONT
£591
9/5Thu
1 stopKLM
16h 37mONT-LHR
22/5Wed
2 stopsKLM
18h 06mLHR-ONT
£655
Search by stops
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Recent one-way flight deals
9/5Thu
2 stops
37h 29mONT-LGW
£373
23/10Wed
1 stopKLM
12h 18mONT-LHR
£382
13/10Sun
1 stopAmerican Airlines
24h 30mONT-LHR
£393
13/10Sun
2 stopsAmerican Airlines
22h 36mONT-LGW
£394
23/9Mon
1 stopIberia
13h 44mONT-LHR
£394
13/10Sun
1 stopIberia
13h 53mONT-LHR
£395
7/10Mon
2 stopsUnited Airlines
16h 22mONT-LHR
£398
26/9Thu
1 stopUnited Airlines
16h 15mONT-LHR
£438
3/8Sat
1 stopBritish Airways
13h 17mONT-LHR
£451
27/7Sat
1 stopBritish Airways
13h 04mONT-LHR
£590
Search by stops
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Last minute flights from Ontario to the United Kingdom