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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 August , September 2026

26 Aug - 14 Sep $ 1,069.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
3 STOPS
ONT
Ontario
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17 Aug - 17 Sep $ 1,220.00
ONT
Ontario
Frontier Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
1 STOPS
ONT
Ontario
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24 Aug - 10 Sep $ 1,247.00
ONT
Ontario
Frontier Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
1 STOPS
ONT
Ontario
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Last minute flights from Ontario to Lisbon

26 Aug - 01 Sep $ 1,427.00
ONT
Ontario
Alaska Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Alaska Airlines
3 STOPS
ONT
Ontario
Pick dates
26 Aug - 01 Sep $ 1,448.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
26 Aug - 01 Sep $ 1,483.00
ONT
Ontario
Frontier Airlines
2 STOPS
LIS
Lisbon
LIS
Lisbon
Frontier Airlines
3 STOPS
ONT
Ontario
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One-way flights to Lisbon from Ontario

4:49 PM - 4:00 PM
Icelandair
2 Stops
20h 31m
ONT - LIS
$ 640
Kiwi
Pick dates
7:13 PM - 8:25 PM
United Airlines
2 Stops
29h 7m
ONT - LIS
$ 666
Kiwi
Pick dates
7:00 AM - 8:25 PM
United Airlines
2 Stops
17h 20m
ONT - LIS
$ 670
Kiwi
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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.