Flights Chicago – Porto (CHI-OPO) from $718*

*Modifying this information may result in a different fare

Book flights from Chicago to Porto

Sep 2026
From$1,054*
Seen: 5 hrs ago
Round-trip/Economy
Oct 2026
From$718*
Seen: 5 hrs ago
Round-trip/Economy
Nov 2026
From$718*
Seen: 1 day ago
Round-trip/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $728
cmp-daily-histogram-bars-legend-max-price-aria-label $1.2K
Displaying fares for September-2026
  • ORD–OPO, 09/28/2026 – 10/05/2026: From $1,054
    28

    Mo

    sep

  • ORD–OPO, 09/29/2026 – 10/13/2026: From $1,054
    29

    Tu

  • ORD–OPO, 09/30/2026 – 10/28/2026: From $1,058
    30

    We

  • ORD–OPO, 10/01/2026 – 10/08/2026: From $1,114
    01

    Th

    oct

  • ORD–OPO, 10/02/2026 – 10/23/2026: From $1,114
    02

    Fr

  • ORD–OPO, 10/03/2026 – 10/31/2026: From $1,174
    03

    Sa

  • ORD–OPO, 10/04/2026 – 11/01/2026: From $1,052
    04

    Su

  • ORD–OPO, 10/05/2026 – 11/02/2026: From $1,052
    05

    Mo

  • ORD–OPO, 10/06/2026 – 11/03/2026: From $1,009
    06

    Tu

  • ORD–OPO, 10/07/2026 – 11/04/2026: From $1,002
    07

    We

  • ORD–OPO, 10/08/2026 – 11/05/2026: From $1,066
    08

    Th

  • ORD–OPO, 10/09/2026 – 11/06/2026: From $1,069
    09

    Fr

  • ORD–OPO, 10/10/2026 – 11/07/2026: From $1,112
    10

    Sa

  • ORD–OPO, 10/11/2026 – 11/01/2026: From $1,052
    11

    Su

  • ORD–OPO, 10/12/2026 – 11/09/2026: From $1,052
    12

    Mo

  • ORD–OPO, 10/13/2026 – 11/03/2026: From $957
    13

    Tu

  • ORD–OPO, 10/14/2026 – 11/04/2026: From $950
    14

    We

  • ORD–OPO, 10/15/2026 – 11/12/2026: From $1,004
    15

    Th

  • ORD–OPO, 10/16/2026 – 11/06/2026: From $1,007
    16

    Fr

  • ORD–OPO, 10/17/2026 – 11/14/2026: From $1,050
    17

    Sa

  • ORD–OPO, 10/18/2026 – 11/15/2026: From $1,000
    18

    Su

  • ORD–OPO, 10/19/2026 – 11/09/2026: From $1,000
    19

    Mo

  • ORD–OPO, 10/20/2026 – 11/10/2026: From $957
    20

    Tu

  • ORD–OPO, 10/21/2026 – 11/11/2026: From $954
    21

    We

  • ORD–OPO, 10/22/2026 – 11/05/2026: From $1,001
    22

    Th

  • ORD–OPO, 10/23/2026 – 11/20/2026: From $1,007
    23

    Fr

  • ORD–OPO, 10/24/2026 – 11/07/2026: From $1,050
    24

    Sa

  • ORD–OPO, 10/25/2026 – 11/01/2026: From $1,001
    25

    Su

  • ORD–OPO, 10/26/2026 – 11/09/2026: From $771
    26

    Mo

  • ORD–OPO, 10/27/2026 – 11/03/2026: From $728
    27

    Tu

    • Range$728-$1,174

    *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

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    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    		12/09/2026 - 12/16/2026

    From

    $718

    Seen: 19 hrs ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		12/02/2026 - 12/16/2026

    From

    $718

    Seen: 19 hrs ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		11/11/2026 - 12/09/2026

    From

    $718

    Seen: 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		11/18/2026 - 12/09/2026

    From

    $718

    Seen: 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    /
    Economy    		11/18/2026 - 11/25/2026

    From

    $718

    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.
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    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.

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