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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 October , November 2026

26 Oct - 01 Dec $ 1,360.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
Pick dates
20 Oct - 01 Dec $ 1,370.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
ONT
Ontario
Pick dates
27 Oct - 01 Dec $ 1,439.00
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

26 Oct - 01 Nov $ 1,770.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
20 Oct - 01 Nov $ 1,779.00
ONT
Ontario
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
27 Oct - 01 Nov $ 1,849.00
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

6:02 AM - 4:50 PM
Swiss International Air Lines
3 Stops
27h 23m
ONT - LCY
$ 708
Kiwi
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9:25 AM - 12:10 PM
United Airlines
2 Stops
44h 25m
ONT - LCY
$ 866
Kiwi
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11:10 AM - 11:55 AM
United Airlines
2 Stops
17h 25m
ONT - LCY
$ 993
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.