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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 June , July 2026

30 Jun - 07 Jul $ 1,331.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
OPO
Porto
OPO
Porto
Swiss International Air Lines
1 STOPS
CHI
Chicago
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30 Jun - 09 Jul $ 1,655.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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29 Jun - 01 Jul $ 1,668.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to Porto

28 Jun - 30 Jun $ 1,628.00
CHI
Chicago
Air Canada
1 STOPS
OPO
Porto
OPO
Porto
Air Canada
2 STOPS
CHI
Chicago
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29 Jun - 01 Jul $ 1,664.00
CHI
Chicago
TAP Portugal
2 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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28 Jun - 30 Jun $ 2,223.00
CHI
Chicago
Iberia Airlines
1 STOPS
OPO
Porto
OPO
Porto
Iberia Airlines
1 STOPS
CHI
Chicago
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One-way flights to Porto from Chicago

3:57 PM - 9:40 PM
United Airlines
1 Stops
11h 48m
CHI - OPO
$ 837
Kiwi
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2:25 PM - 6:50 PM
United Airlines
1 Stops
10h 30m
CHI - OPO
$ 839
Kiwi
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2:25 PM - 6:50 PM
United Airlines
1 Stops
10h 30m
CHI - OPO
$ 842
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.