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Cheap flights from Ontario (ONT) to Porto (OPO)

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How to find the cheapest flight from Ontario (ONT) to Porto (OPO)

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

30 Sep - 06 Oct $ 1,243.00
ONT
Ontario
United Airlines
2 STOPS
OPO
Porto
OPO
Porto
United Airlines
2 STOPS
ONT
Ontario
Pick dates
28 Sep - 06 Oct $ 3,070.00
ONT
Ontario
Turkish Airlines
2 STOPS
OPO
Porto
OPO
Porto
Turkish Airlines
2 STOPS
ONT
Ontario
Pick dates
30 Sep - 06 Oct $ 3,548.00
ONT
Ontario
Turkish Airlines
2 STOPS
OPO
Porto
OPO
Porto
Turkish Airlines
2 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to Porto

27 Sep - 01 Oct $ 1,432.00
ONT
Ontario
Frontier Airlines
3 STOPS
OPO
Porto
OPO
Porto
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
26 Sep - 01 Oct $ 3,418.00
ONT
Ontario
Turkish Airlines
2 STOPS
OPO
Porto
OPO
Porto
Turkish Airlines
2 STOPS
ONT
Ontario
Pick dates
27 Sep - 01 Oct $ 3,866.00
ONT
Ontario
Turkish Airlines
2 STOPS
OPO
Porto
OPO
Porto
Turkish Airlines
2 STOPS
ONT
Ontario
Pick dates

One-way flights to Porto from Ontario

10:39 PM - 2:00 PM
TAP Portugal
3 Stops
32h 21m
ONT - OPO
$ 531
Kiwi
Pick dates
6:07 AM - 9:50 PM
United Airlines
2 Stops
19h 38m
ONT - OPO
$ 691
Kiwi
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4:03 PM - 4:30 PM
Swiss International Air Lines
2 Stops
18h 12m
ONT - OPO
$ 702
Kiwi
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How to find the cheapest flight from Ontario (ONT) to Porto (OPO)

Related info for your journey
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How to find the cheapest flight from Ontario (ONT) to Porto (OPO)
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How to find the cheapest flight from Ontario (ONT) to Porto (OPO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.