Chicago (ORD) to Porto (OPO) flights from USD718

*Modifying this information may result in a different fare

*All amounts are in USD. Taxes and surcharges are included. No booking fee is applicable. Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional baggage fees may apply.

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Lowest fares between Chicago and Porto

cmp-daily-histogram-bars-legend-min-price-aria-label USD767
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.3K
Displaying fares for September-2026
  • ORD–OPO, 09/20/2026 – 09/27/2026: From USD1,121
    20

    Su

    SEP

  • ORD–OPO, 09/21/2026 – 10/19/2026: From USD1,054
    21

    Mo

  • ORD–OPO, 09/22/2026 – 10/13/2026: From USD1,059
    22

    Tu

  • ORD–OPO, 09/23/2026 – 10/07/2026: From USD1,059
    23

    We

  • ORD–OPO, 09/24/2026 – 10/15/2026: From USD1,114
    24

    Th

  • ORD–OPO, 09/25/2026 – 10/23/2026: From USD1,119
    25

    Fr

  • ORD–OPO, 09/26/2026 – 10/10/2026: From USD1,273
    26

    Sa

  • ORD–OPO, 09/27/2026 – 10/11/2026: From USD1,208
    27

    Su

  • ORD–OPO, 09/28/2026 – 10/12/2026: From USD1,054
    28

    Mo

  • ORD–OPO, 09/29/2026 – 10/13/2026: From USD1,054
    29

    Tu

  • ORD–OPO, 09/30/2026 – 10/28/2026: From USD1,054
    30

    We

  • ORD–OPO, 10/01/2026 – 10/08/2026: From USD1,114
    01

    Th

    OCT

  • ORD–OPO, 10/02/2026 – 10/05/2026: From USD1,114
    02

    Fr

  • ORD–OPO, 10/03/2026 – 10/31/2026: From USD1,174
    03

    Sa

  • ORD–OPO, 10/04/2026 – 11/01/2026: From USD1,000
    04

    Su

  • ORD–OPO, 10/05/2026 – 11/02/2026: From USD1,000
    05

    Mo

  • ORD–OPO, 10/06/2026 – 11/03/2026: From USD957
    06

    Tu

  • ORD–OPO, 10/07/2026 – 11/04/2026: From USD950
    07

    We

  • ORD–OPO, 10/08/2026 – 11/05/2026: From USD1,015
    08

    Th

  • ORD–OPO, 10/09/2026 – 11/06/2026: From USD1,022
    09

    Fr

  • ORD–OPO, 10/10/2026 – 11/07/2026: From USD1,060
    10

    Sa

  • ORD–OPO, 10/11/2026 – 11/01/2026: From USD1,000
    11

    Su

  • ORD–OPO, 10/12/2026 – 11/02/2026: From USD1,000
    12

    Mo

  • ORD–OPO, 10/13/2026 – 11/03/2026: From USD858
    13

    Tu

  • ORD–OPO, 10/14/2026 – 11/11/2026: From USD851
    14

    We

  • ORD–OPO, 10/15/2026 – 11/05/2026: From USD901
    15

    Th

  • ORD–OPO, 10/16/2026 – 11/06/2026: From USD908
    16

    Fr

  • ORD–OPO, 10/17/2026 – 11/07/2026: From USD817
    17

    Sa

  • ORD–OPO, 10/18/2026 – 11/01/2026: From USD767
    18

    Su

  • ORD–OPO, 10/19/2026 – 11/02/2026: From USD767
    19

    Mo

  • RangeUSD767-USD1,273