
Flight Deals from Chicago to Porto from $276
Top flight deals from leading airlines:







... and +100s more
Save up to 50% on select flights with Priceline
Save an average of $240 per person when bundling your flight and hotel together with Priceline
If a VIP member finds a better price elsewhere, we'll refund up to 200% of the difference
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Stops
- Up to 1 stop$513
- Up to 2 stops$507
Airlines
- American Airlines$677
- Austrian Airlines$513
- British Airways$530
- Brussels Airlines$530
- Finnair$707
- IBERIA$691
- Lufthansa$507
- SWISS$517
- TAP Portugal$606
- Turkish Airlines$673
- United Airlines$606
Cabin Class
- Economy$507
Departure Airports
- Chicago O Hare Airport$507
Arrival Airports
- Francisco de Sá Carneiro Airport$507
Layover Airports
- Adolfo Suárez Madrid–Barajas Airport$530
- Barcelona International Airport$994
- Brussels Airport$530
- Dallas Fort Worth International Airport$942
- Detroit Metropolitan Airport$708
- Frankfurt am Main Airport$507
- General Edward Lawrence Logan International Airport$797
- Geneva Cointrin International Airport$563
- Humberto Delgado Airport (Lisbon Portela Airport)$606
- Istanbul Airport$673
- London Heathrow Airport$626
- Munich Airport$595
- New York John F Kennedy Airport$530
- Newark Liberty Airport$507
- Paris Charles de Gaulle Airport$964
- Reagan Washington National Airport$761
- Vienna International Airport$513
- Washington Dulles Airport$507
- Zürich Airport$517
Best Price. GUARANTEED.
Exclusively for Priceline Members
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We'll refund the difference if you find a lower price.
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Top Deals on flights from Chicago to Porto
Chicago, US (CHI) - Porto, PT (OPO)

Aug 11
Aug 12
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Chicago, US (CHI) - Porto, PT (OPO)

Jul 9
Jul 10
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Chicago, US (CHI) - Porto, PT (OPO)

Jul 15
Jul 16
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Chicago, US (CHI) - Porto, PT (OPO)

Oct 20
Oct 21
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Chicago, US (CHI) - Porto, PT (OPO)

Sep 22
Sep 24
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Chicago, US (CHI) - Porto, PT (OPO)

Oct 20
Oct 21
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Chicago, US (CHI) - Porto, PT (OPO)

Oct 12
Oct 13
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Chicago, US (CHI) - Porto, PT (OPO)

Jul 15
Jul 16
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Chicago, US (CHI) - Porto, PT (OPO)

Sep 27
Sep 28
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Chicago, US (CHI) - Porto, PT (OPO)

Oct 12
Oct 13
as low as
Chicago, US (CHI) - Porto, PT (OPO)

Jul 28
Jul 29
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Chicago, US (CHI) - Porto, PT (OPO)

Jul 28
Jul 30
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