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Cheap flights from Ontario (ONT) to London (LCY)

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How to find the cheapest flight from Ontario (ONT) to London (LCY)

How to find the cheapest flight from Ontario (ONT) to London (LCY)
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How to find the cheapest flight from Ontario (ONT) to London (LCY)
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How to find the cheapest flight from Ontario (ONT) to London (LCY)
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Cheap flights from Ontario to London in November , December 2025

27 Nov - 12 Dec $ 1,103.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
27 Nov - 15 Dec $ 1,112.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
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27 Nov - 15 Dec $ 1,162.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
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Last minute flights from Ontario to London

27 Nov - 02 Dec $ 1,523.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
27 Nov - 02 Dec $ 1,573.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
27 Nov - 02 Dec $ 1,642.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates

One-way flights to London from Ontario

12:58 AM - 8:50 AM
Lufthansa
3 Stops
24h 22m
ONT - LCY
$ 410
Kiwi
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7:00 AM - 12:10 PM
United Airlines
2 Stops
21h 55m
ONT - LCY
$ 487
Kiwi
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7:00 AM - 8:35 AM
Air Dolomiti
2 Stops
18h 5m
ONT - LCY
$ 998
Kiwi
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How to find the cheapest flight from Ontario (ONT) to London (LCY)

Related info for your journey
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How to find the cheapest flight from Ontario (ONT) to London (LCY)
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How to find the cheapest flight from Ontario (ONT) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.