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Cheap flights from Chicago (CHI) to Porto (OPO)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Chicago (CHI) to Porto (OPO)

How to find the cheapest flight from Chicago (CHI) to Porto (OPO)
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How to find the cheapest flight from Chicago (CHI) to Porto (OPO)
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How to find the cheapest flight from Chicago (CHI) to Porto (OPO)
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Cheap flights from Chicago to Porto in November , December 2025

28 Nov - 07 Dec $ 493.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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23 Nov - 07 Dec $ 1,006.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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30 Nov - 10 Dec $ 1,042.00
CHI
Chicago
Air Europa
1 STOPS
OPO
Porto
OPO
Porto
Air Europa
2 STOPS
CHI
Chicago
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Last minute flights from Chicago to Porto

26 Nov - 01 Dec $ 1,295.00
CHI
Chicago
Porter Airlines
1 STOPS
OPO
Porto
OPO
Porto
Porter Airlines
3 STOPS
CHI
Chicago
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21 Nov - 01 Dec $ 1,537.00
CHI
Chicago
United Airlines
1 STOPS
OPO
Porto
OPO
Porto
United Airlines
1 STOPS
CHI
Chicago
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23 Nov - 30 Nov $ 2,773.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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One-way flights to Porto from Chicago

8:25 PM - 12:00 PM
TAP Portugal
1 Stops
10h 35m
CHI - OPO
$ 400
Kiwi
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8:25 PM - 12:00 PM
TAP Portugal
1 Stops
10h 35m
CHI - OPO
$ 420
Kiwi
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5:31 PM - 9:45 PM
United Airlines
1 Stops
9h 59m
CHI - OPO
$ 494
Kiwi
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How to find the cheapest flight from Chicago (CHI) to Porto (OPO)

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