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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 June , July 2026

29 Jun - 22 Jul $ 1,899.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
29 Jun - 25 Jul $ 1,903.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
29 Jun - 02 Jul $ 1,931.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
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Last minute flights from Ontario to London

29 Jun - 02 Jul $ 2,226.00
ONT
Ontario
Volaris
2 STOPS
LCY
London
LCY
London
Volaris
3 STOPS
ONT
Ontario
Pick dates
29 Jun - 02 Jul $ 2,251.00
ONT
Ontario
Volaris
2 STOPS
LCY
London
LCY
London
Volaris
3 STOPS
ONT
Ontario
Pick dates
28 Jun - 02 Jul $ 2,296.00
ONT
Ontario
Volaris
2 STOPS
LCY
London
LCY
London
Volaris
3 STOPS
ONT
Ontario
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One-way flights to London from Ontario

6:10 AM - 11:55 AM
United Airlines
2 Stops
22h 25m
ONT - LCY
$ 708
Kiwi
Pick dates
6:10 AM - 11:55 AM
United Airlines
2 Stops
22h 25m
ONT - LCY
$ 708
Kiwi
Pick dates
6:10 AM - 11:55 AM
United Airlines
2 Stops
22h 25m
ONT - LCY
$ 711
Kiwi
Pick dates

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.