Flights Seattle – Porto (SEA-OPO) from $747*

*Modifying this information may result in a different fare

Book flights from Seattle to Porto

Aug 2026
From$932*
Seen: 2 hrs ago
Round-trip/Economy
Sep 2026
From$836*
Seen: 8 hrs ago
Round-trip/Economy
Oct 2026
From$802*
Seen: 1 hour ago
Round-trip/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $929
cmp-daily-histogram-bars-legend-max-price-aria-label $1.3K
Displaying fares for August-2026
  • SEA–OPO, 08/18/2026 – 09/15/2026: From $932
    18

    Tu

    aug

  • SEA–OPO, 08/19/2026 – 08/26/2026: From $932
    19

    We

  • SEA–OPO, 08/20/2026 – 08/27/2026: From $992
    20

    Th

  • SEA–OPO, 08/21/2026 – 09/04/2026: From $992
    21

    Fr

  • SEA–OPO, 08/22/2026 – 09/05/2026: From $1,173
    22

    Sa

  • SEA–OPO, 08/23/2026 – 08/30/2026: From $1,103
    23

    Su

  • SEA–OPO, 08/24/2026 – 09/07/2026: From $1,103
    24

    Mo

  • SEA–OPO, 08/25/2026 – 09/08/2026: From $1,043
    25

    Tu

  • SEA–OPO, 08/26/2026 – 09/02/2026: From $1,048
    26

    We

  • SEA–OPO, 08/27/2026 – 09/24/2026: From $1,113
    27

    Th

  • SEA–OPO, 08/28/2026 – 09/04/2026: From $1,113
    28

    Fr

  • SEA–OPO, 08/29/2026 – 09/05/2026: From $1,274
    29

    Sa

  • SEA–OPO, 08/30/2026 – 09/06/2026: From $1,103
    30

    Su

  • SEA–OPO, 08/31/2026 – 09/07/2026: From $1,108
    31

    Mo

  • SEA–OPO, 09/01/2026 – 09/08/2026: From $1,052
    01

    Tu

    sep

  • SEA–OPO, 09/02/2026 – 09/09/2026: From $1,149
    02

    We

  • SEA–OPO, 09/03/2026 – 09/10/2026: From $1,324
    03

    Th

  • SEA–OPO, 09/04/2026 – 09/18/2026: From $1,324
    04

    Fr

  • SEA–OPO, 09/05/2026 – 09/12/2026: From $1,182
    05

    Sa

  • SEA–OPO, 09/06/2026 – 10/04/2026: From $1,103
    06

    Su

  • SEA–OPO, 09/07/2026 – 09/21/2026: From $1,103
    07

    Mo

  • SEA–OPO, 09/08/2026 – 09/22/2026: From $1,048
    08

    Tu

  • SEA–OPO, 09/09/2026 – 09/23/2026: From $1,043
    09

    We

  • SEA–OPO, 09/10/2026 – 09/17/2026: From $1,113
    10

    Th

  • SEA–OPO, 09/11/2026 – 09/18/2026: From $1,118
    11

    Fr

  • SEA–OPO, 09/12/2026 – 09/19/2026: From $1,178
    12

    Sa

  • SEA–OPO, 09/13/2026 – 10/04/2026: From $1,103
    13

    Su

  • SEA–OPO, 09/14/2026 – 09/21/2026: From $1,103
    14

    Mo

  • SEA–OPO, 09/15/2026 – 09/22/2026: From $1,101
    15

    Tu

  • SEA–OPO, 09/16/2026 – 09/23/2026: From $929
    16

    We

  • SEA–OPO, 09/17/2026 – 09/24/2026: From $1,020
    17

    Th

    • Range$929-$1,324

    *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 Seattle to Porto for the upcoming months

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    The best deals on flights from Seattle to Porto for the upcoming months
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		11/16/2026 - 11/19/2026

    From

    $747

    Seen: 35 minutes ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		11/16/2026 - 12/07/2026

    From

    $797

    Seen: 35 minutes ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		11/16/2026 - 11/23/2026

    From

    $797

    Seen: 35 minutes ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		10/13/2026 - 11/10/2026

    From

    $802

    Seen: 1 hour ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		10/20/2026 - 11/10/2026

    From

    $802

    Seen: 1 hour 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 Seattle to Porto with Air France

    Whether you're looking for a last-minute Seattle - 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 Seattle (SEA) to Porto (OPO) or directly pick your departure date if your trip to Porto (Portugal) is already scheduled.

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