Earn point on your loyalty program!arrow arc left

Cheap flights from Chicago (CHI) to Porto (OPO)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Chicago (CHI) to Porto (OPO)

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.
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.

Cheap flights from Chicago to Porto in November , December 2026

27 Nov - 13 Dec $ 565.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
Pick dates
15 Nov - 06 Dec $ 953.00
CHI
Chicago
TAP Portugal
1 STOPS
OPO
Porto
OPO
Porto
TAP Portugal
1 STOPS
CHI
Chicago
Pick dates
15 Nov - 10 Dec $ 1,114.00
CHI
Chicago
Iberia Airlines
1 STOPS
OPO
Porto
OPO
Porto
Iberia Airlines
1 STOPS
CHI
Chicago
Pick dates

Last minute flights from Chicago to Porto

27 Nov - 01 Dec $ 836.00
CHI
Chicago
Icelandair
1 STOPS
OPO
Porto
OPO
Porto
Icelandair
2 STOPS
CHI
Chicago
Pick dates
15 Nov - 01 Dec $ 1,239.00
CHI
Chicago
Turkish Airlines
1 STOPS
OPO
Porto
OPO
Porto
Turkish Airlines
1 STOPS
CHI
Chicago
Pick dates
15 Nov - 30 Nov $ 1,989.00
CHI
Chicago
Air Canada
1 STOPS
OPO
Porto
OPO
Porto
Air Canada
2 STOPS
CHI
Chicago
Pick dates

One-way flights to Porto from Chicago

8:10 PM - 12:30 PM
TAP Portugal
1 Stops
11h 20m
CHI - OPO
$ 297
Kiwi
Pick dates
8:10 PM - 12:30 PM
TAP Portugal
1 Stops
11h 20m
CHI - OPO
$ 298
Kiwi
Pick dates
7:00 PM - 12:30 PM
TAP Portugal
1 Stops
12h 30m
CHI - OPO
$ 298
Kiwi
Pick dates

How to find the cheapest flight from Chicago (CHI) to Porto (OPO)

Related info for your journey
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.
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.