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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 May , June 2026

27 May - 04 Jun $ 1,168.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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21 May - 04 Jun $ 1,380.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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29 May - 05 Jun $ 1,678.00
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

23 May - 31 May $ 1,328.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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23 May - 31 May $ 1,328.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
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24 May - 31 May $ 1,427.00
CHI
Chicago
United Airlines
1 STOPS
OPO
Porto
OPO
Porto
United Airlines
1 STOPS
CHI
Chicago
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One-way flights to Porto from Chicago

10:30 AM - 7:25 PM
Air Transat
2 Stops
14h 15m
CHI - OPO
$ 622
Kiwi
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7:05 PM - 4:45 PM
Swiss International Air Lines
1 Stops
17h 25m
CHI - OPO
$ 778
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.