Flights from Chicago to Porto from USD 511

Promo Code

Flights from Chicago to Porto

USD 646
Displaying fares for July-2025
  • 09

    We

    JUL

  • 10

    Th

  • 11

    Fr

  • 12

    Sa

  • 13

    Su

  • 14

    Mo

  • 15

    Tu

  • 16

    We

  • 17

    Th

  • 18

    Fr

  • 19

    Sa

  • 20

    Su

  • 21

    Mo

  • 22

    Tu

  • 23

    We

  • 24

    Th

  • 25

    Fr

  • 26

    Sa

  • 27

    Su

  • 28

    Mo

  • 29

    Tu

  • 30

    We

  • 31

    Th

  • 01

    Fr

    AUG

  • 02

    Sa

  • 03

    Su

  • 04

    Mo

  • 05

    Tu

  • 06

    We

  • 07

    Th

  • 08

    Fr

  • RangeUSD 646-USD 1,303

    Best Flight Deals from Chicago to Porto

    USD
    keyboard_arrow_down
    Best Flight Deals from Chicago to Porto
    From
    To
    Fare Type
    Dates
    Price
    Chicago (ORD)Porto (OPO)Round-trip
    |
    Economy
    23/08/2025 - 11/09/2025

    From

    USD 511

    Viewed 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    |
    Economy
    18/03/2026 - 25/03/2026

    From

    USD 511

    Viewed 1 day ago

    Chicago (ORD)Porto (OPO)Round-trip
    |
    Economy
    09/11/2025 - 14/12/2025

    From

    USD 512

    Viewed 14 hours ago

    Chicago (ORD)Porto (OPO)Round-trip
    |
    Economy
    24/08/2025 - 30/08/2025

    From

    USD 512

    Viewed 13 hours ago

    Chicago (ORD)Porto (OPO)Round-trip
    |
    Economy
    30/11/2025 - 30/12/2025

    From

    USD 540

    Viewed 1 day ago

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

    Business Flights Deals

    USD

    Chicago (ORD)to

    Porto (OPO)
    29/08/2025 - 05/09/2025

    Round-trip

    Business

    From
    USD 3,500
    Viewed 1 day ago

    Chicago (ORD)to

    Porto (OPO)
    23/08/2025 - 11/09/2025

    Round-trip

    Business

    From
    USD 3,500
    Viewed 1 day ago

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.