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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 October , November 2026

28 Oct - 06 Nov $ 583.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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21 Oct - 06 Nov $ 1,166.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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24 Oct - 03 Nov $ 1,609.00
CHI
Chicago
Iberia Airlines
1 STOPS
OPO
Porto
OPO
Porto
Iberia Airlines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to Porto

24 Oct - 01 Nov $ 1,130.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
OPO
Porto
OPO
Porto
Swiss International Air Lines
1 STOPS
CHI
Chicago
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24 Oct - 31 Oct $ 1,239.00
CHI
Chicago
United Airlines
1 STOPS
OPO
Porto
OPO
Porto
United Airlines
1 STOPS
CHI
Chicago
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24 Oct - 31 Oct $ 1,594.00
CHI
Chicago
Air France
1 STOPS
OPO
Porto
OPO
Porto
Air France
1 STOPS
CHI
Chicago
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One-way flights to Porto from Chicago

8:00 PM - 12:30 PM
TAP Portugal
1 Stops
12h 30m
CHI - OPO
$ 474
Kiwi
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6:00 PM - 4:00 PM
TAP Portugal
1 Stops
17h
CHI - OPO
$ 537
Kiwi
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6:29 PM - 10:45 PM
United Airlines
1 Stops
10h 1m
CHI - OPO
$ 566
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)
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 Chicago (CHI) to Porto (OPO)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.