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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 February , March 2026

18 Feb - 12 Mar $ 864.00
ONT
Ontario
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
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26 Feb - 05 Mar $ 871.00
ONT
Ontario
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
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19 Feb - 12 Mar $ 893.00
ONT
Ontario
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
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Last minute flights from Ontario to London

25 Feb - 01 Mar $ 1,363.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
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18 Feb - 01 Mar $ 1,391.00
ONT
Ontario
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
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24 Feb - 01 Mar $ 1,402.00
ONT
Ontario
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
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One-way flights to London from Ontario

7:00 AM - 4:25 PM
Swiss International Air Lines
3 Stops
26h 5m
ONT - LCY
$ 514
Kiwi
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7:30 AM - 5:10 PM
Lufthansa
2 Stops
26h 10m
ONT - LCY
$ 542
Kiwi
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8:35 AM - 5:05 PM
Lufthansa
2 Stops
25h
ONT - LCY
$ 553
Kiwi
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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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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.