Chicago (ORD) to Porto (OPO) flights from USD761

*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 USD963
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.4K
Displaying fares for August-2026
  • ORD–OPO, 08/11/2026 – 09/08/2026: From USD1,055
    11

    Tu

    AUG

  • ORD–OPO, 08/12/2026 – 08/19/2026: From USD1,055
    12

    We

  • ORD–OPO, 08/13/2026 – 09/10/2026: From USD1,115
    13

    Th

  • ORD–OPO, 08/14/2026 – 08/21/2026: From USD1,115
    14

    Fr

  • ORD–OPO, 08/15/2026 – 08/29/2026: From USD1,175
    15

    Sa

  • ORD–OPO, 08/16/2026 – 09/06/2026: From USD1,115
    16

    Su

  • ORD–OPO, 08/17/2026 – 09/14/2026: From USD1,115
    17

    Mo

  • ORD–OPO, 08/18/2026 – 09/08/2026: From USD1,055
    18

    Tu

  • ORD–OPO, 08/19/2026 – 08/26/2026: From USD1,055
    19

    We

  • ORD–OPO, 08/20/2026 – 09/10/2026: From USD1,115
    20

    Th

  • ORD–OPO, 08/21/2026 – 09/11/2026: From USD1,115
    21

    Fr

  • ORD–OPO, 08/22/2026 – 08/29/2026: From USD1,332
    22

    Sa

  • ORD–OPO, 08/23/2026 – 09/20/2026: From USD1,262
    23

    Su

  • ORD–OPO, 08/24/2026 – 08/31/2026: From USD1,262
    24

    Mo

  • ORD–OPO, 08/25/2026 – 09/08/2026: From USD1,202
    25

    Tu

  • ORD–OPO, 08/26/2026 – 09/09/2026: From USD1,202
    26

    We

  • ORD–OPO, 08/27/2026 – 09/24/2026: From USD1,272
    27

    Th

  • ORD–OPO, 08/28/2026 – 09/18/2026: From USD1,272
    28

    Fr

  • ORD–OPO, 08/29/2026 – 09/19/2026: From USD1,332
    29

    Sa

  • ORD–OPO, 08/30/2026 – 09/27/2026: From USD1,262
    30

    Su

  • ORD–OPO, 08/31/2026 – 09/14/2026: From USD1,262
    31

    Mo

  • ORD–OPO, 09/01/2026 – 09/22/2026: From USD1,202
    01

    Tu

    SEP

  • ORD–OPO, 09/02/2026 – 09/16/2026: From USD1,202
    02

    We

  • ORD–OPO, 09/03/2026 – 09/17/2026: From USD1,272
    03

    Th

  • ORD–OPO, 09/04/2026 – 09/11/2026: From USD1,417
    04

    Fr

  • ORD–OPO, 09/05/2026 – 09/19/2026: From USD1,336
    05

    Sa

  • ORD–OPO, 09/06/2026 – 09/20/2026: From USD1,266
    06

    Su

  • ORD–OPO, 09/07/2026 – 09/14/2026: From USD1,019
    07

    Mo

  • ORD–OPO, 09/08/2026 – 09/22/2026: From USD963
    08

    Tu

  • ORD–OPO, 09/09/2026 – 09/30/2026: From USD1,038
    09

    We

  • ORD–OPO, 09/10/2026 – 10/01/2026: From USD1,033
    10

    Th

  • RangeUSD963-USD1,417