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Cheap flights from Ontario (ONT) to Lisbon (LIS)

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How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)

How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)
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How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)
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How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)
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Cheap flights from Ontario to Lisbon in September , October 2026

29 Sep - 07 Oct $ 1,068.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
Pick dates
30 Sep - 07 Oct $ 1,081.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
Pick dates
27 Sep - 20 Oct $ 1,468.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to Lisbon

28 Sep - 01 Oct $ 1,463.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
2 STOPS
ONT
Ontario
Pick dates
28 Sep - 01 Oct $ 1,468.00
ONT
Ontario
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
29 Sep - 01 Oct $ 1,698.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
2 STOPS
ONT
Ontario
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One-way flights to Lisbon from Ontario

10:39 PM - 6:00 AM
TAP Portugal
2 Stops
26h 11m
ONT - LIS
$ 503
Kiwi
Pick dates
7:00 AM - 8:30 PM
United Airlines
2 Stops
17h 20m
ONT - LIS
$ 668
Kiwi
Pick dates
8:03 AM - 8:30 PM
United Airlines
2 Stops
16h 17m
ONT - LIS
$ 785
Kiwi
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How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)

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How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Lisbon (LIS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.