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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 March , April 2026

22 Mar - 01 Apr $ 601.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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08 Mar - 08 Apr $ 1,007.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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08 Mar - 08 Apr $ 1,014.00
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

15 Mar - 01 Apr $ 501.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
Pick dates
08 Mar - 01 Apr $ 1,007.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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08 Mar - 31 Mar $ 3,402.00
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

9:25 PM - 10:00 AM
TAP Portugal
1 Stops
32h 40m
CHI - OPO
$ 397
Kiwi
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9:25 PM - 12:00 PM
TAP Portugal
1 Stops
10h 35m
CHI - OPO
$ 404
Kiwi
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6:20 PM - 10:45 PM
United Airlines
1 Stops
10h 10m
CHI - OPO
$ 602
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.