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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 December 2025 , January 2026

29 Dec - 22 Jan $ 530.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
Pick dates
29 Dec - 23 Jan $ 530.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
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30 Dec - 14 Jan $ 651.00
ONT
Ontario
United Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
2 STOPS
ONT
Ontario
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Last minute flights from Ontario to Lisbon

29 Dec - 01 Jan $ 1,422.00
ONT
Ontario
Frontier Airlines
3 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
2 STOPS
ONT
Ontario
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28 Dec - 01 Jan $ 1,466.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
2 STOPS
ONT
Ontario
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24 Dec - 31 Dec $ 1,512.00
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

6:04 AM - 8:25 PM
United Airlines
2 Stops
18h 6m
ONT - LIS
$ 327
Kiwi
Pick dates
11:59 PM - 10:05 PM
United Airlines
2 Stops
26h 16m
ONT - LIS
$ 327
Kiwi
Pick dates
6:04 AM - 8:25 PM
United Airlines
2 Stops
18h 6m
ONT - LIS
$ 441
Kiwi
Pick dates

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

Related info for your journey
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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.