Flights Chicago – Porto (CHI-OPO) from $761*

*Modifying this information may result in a different fare

Book flights from Chicago to Porto

Aug 2026
From$1,055*
Seen: 1 day ago
Round-trip/Economy
Sep 2026
From$951*
Seen: 1 hour ago
Round-trip/Economy
Oct 2026
From$795*
Seen: 1 day ago
Round-trip/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $959
cmp-daily-histogram-bars-legend-max-price-aria-label $1.4K
Displaying fares for August-2026
  • ORD–OPO, 08/18/2026 – 09/08/2026: From $1,055
    18

    Tu

    aug

  • ORD–OPO, 08/19/2026 – 08/26/2026: From $1,055
    19

    We

  • ORD–OPO, 08/20/2026 – 09/10/2026: From $1,115
    20

    Th

  • ORD–OPO, 08/21/2026 – 09/04/2026: From $1,115
    21

    Fr

  • ORD–OPO, 08/22/2026 – 09/05/2026: From $1,332
    22

    Sa

  • ORD–OPO, 08/23/2026 – 08/30/2026: From $1,262
    23

    Su

  • ORD–OPO, 08/24/2026 – 08/31/2026: From $1,262
    24

    Mo

  • ORD–OPO, 08/25/2026 – 09/08/2026: From $1,202
    25

    Tu

  • ORD–OPO, 08/26/2026 – 09/02/2026: From $1,202
    26

    We

  • ORD–OPO, 08/27/2026 – 09/10/2026: From $1,272
    27

    Th

  • ORD–OPO, 08/28/2026 – 09/18/2026: From $1,272
    28

    Fr

  • ORD–OPO, 08/29/2026 – 09/19/2026: From $1,332
    29

    Sa

  • ORD–OPO, 08/30/2026 – 09/06/2026: From $1,262
    30

    Su

  • ORD–OPO, 08/31/2026 – 09/07/2026: From $1,262
    31

    Mo

  • ORD–OPO, 09/01/2026 – 09/08/2026: From $1,202
    01

    Tu

    sep

  • ORD–OPO, 09/02/2026 – 09/23/2026: From $1,202
    02

    We

  • ORD–OPO, 09/03/2026 – 09/17/2026: From $1,272
    03

    Th

  • ORD–OPO, 09/04/2026 – 09/11/2026: From $1,421
    04

    Fr

  • ORD–OPO, 09/05/2026 – 09/19/2026: From $1,332
    05

    Sa

  • ORD–OPO, 09/06/2026 – 09/27/2026: From $1,266
    06

    Su

  • ORD–OPO, 09/07/2026 – 09/21/2026: From $1,262
    07

    Mo

  • ORD–OPO, 09/08/2026 – 09/15/2026: From $1,202
    08

    Tu

  • ORD–OPO, 09/09/2026 – 09/23/2026: From $1,206
    09

    We

  • ORD–OPO, 09/10/2026 – 09/17/2026: From $1,272
    10

    Th

  • ORD–OPO, 09/11/2026 – 09/25/2026: From $1,272
    11

    Fr

  • ORD–OPO, 09/12/2026 – 09/26/2026: From $1,332
    12

    Sa

  • ORD–OPO, 09/13/2026 – 09/20/2026: From $1,262
    13

    Su

  • ORD–OPO, 09/14/2026 – 09/21/2026: From $1,019
    14

    Mo

  • ORD–OPO, 09/15/2026 – 09/22/2026: From $959
    15

    Tu

  • ORD–OPO, 09/16/2026 – 09/30/2026: From $963
    16

    We

  • ORD–OPO, 09/17/2026 – 09/24/2026: From $1,011
    17

    Th

    • Range$959-$1,421

    *Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.

    The best deals on flights from Chicago to Porto for the upcoming months

    $
    keyboard_arrow_down
    The best deals on flights from Chicago to Porto for the upcoming months
    From
    To
    Fare Type
    Dates
    Price
    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		11/15/2026 - 11/18/2026

    From

    $761

    Seen: 1 hour ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		11/16/2026 - 11/19/2026

    From

    $765

    Seen: 1 hour ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		10/14/2026 - 11/04/2026

    From

    $795

    Seen: 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		10/14/2026 - 11/11/2026

    From

    $795

    Seen: 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		10/21/2026 - 11/18/2026

    From

    $795

    Seen: 1 day ago

    *Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
    Air France airplane

    Travel from Chicago to Porto with Air France

    Whether you're looking for a last-minute Chicago - Porto (Portugal) flight or planning a flight at a later date, take advantage of our lowest prices for your travel dates on this site. Take a look at the next 6 months and find the best price to fly whit Air France from Chicago (CHI) to Porto (OPO) or directly pick your departure date if your trip to Porto (Portugal) is already scheduled.

    More flight offers from Chicago to Porto

    Explore Air France's Top-Pick Destinations