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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 April , May 2026

25 Apr - 06 May $ 679.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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15 Apr - 02 May $ 1,164.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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15 Apr - 06 May $ 1,172.00
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

11 Apr - 01 May $ 679.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
Pick dates
11 Apr - 01 May $ 679.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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15 Apr - 30 Apr $ 1,540.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
OPO
Porto
OPO
Porto
Swiss International Air Lines
1 STOPS
CHI
Chicago
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One-way flights to Porto from Chicago

7:25 PM - 3:45 PM
Norwegian Air Shuttle
2 Stops
17h 5m
CHI - OPO
$ 403
Kiwi
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6:00 PM - 10:00 AM
TAP Portugal
1 Stops
10h 55m
CHI - OPO
$ 525
Kiwi
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6:00 PM - 2:00 PM
TAP Portugal
1 Stops
15h
CHI - OPO
$ 525
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.