Flights Seattle – Porto (SEA-OPO) from $738*

*Modifying this information may result in a different fare

Book flights from Seattle to Porto

Sep 2026
From$933*
Seen: 2 hrs ago
Round-trip/Economy
Oct 2026
From$738*
Seen: 2 hrs ago
Round-trip/Economy
Nov 2026
From$738*
Seen: 2 hrs ago
Round-trip/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $795
cmp-daily-histogram-bars-legend-max-price-aria-label $1.2K
Displaying fares for September-2026
  • SEA–OPO, 09/07/2026 – 09/21/2026: From $1,104
    07

    Mo

    sep

  • SEA–OPO, 09/08/2026 – 09/15/2026: From $1,044
    08

    Tu

  • SEA–OPO, 09/09/2026 – 09/16/2026: From $1,044
    09

    We

  • SEA–OPO, 09/10/2026 – 10/08/2026: From $1,213
    10

    Th

  • SEA–OPO, 09/11/2026 – 09/18/2026: From $1,114
    11

    Fr

  • SEA–OPO, 09/12/2026 – 09/19/2026: From $1,174
    12

    Sa

  • SEA–OPO, 09/13/2026 – 10/11/2026: From $1,104
    13

    Su

  • SEA–OPO, 09/14/2026 – 10/05/2026: From $1,104
    14

    Mo

  • SEA–OPO, 09/15/2026 – 10/06/2026: From $1,044
    15

    Tu

  • SEA–OPO, 09/16/2026 – 10/14/2026: From $1,044
    16

    We

  • SEA–OPO, 09/17/2026 – 10/08/2026: From $997
    17

    Th

  • SEA–OPO, 09/18/2026 – 10/16/2026: From $1,118
    18

    Fr

  • SEA–OPO, 09/19/2026 – 09/26/2026: From $1,053
    19

    Sa

  • SEA–OPO, 09/20/2026 – 10/04/2026: From $993
    20

    Su

  • SEA–OPO, 09/21/2026 – 10/05/2026: From $993
    21

    Mo

  • SEA–OPO, 09/22/2026 – 09/29/2026: From $933
    22

    Tu

  • SEA–OPO, 09/23/2026 – 10/14/2026: From $937
    23

    We

  • SEA–OPO, 09/24/2026 – 10/08/2026: From $993
    24

    Th

  • SEA–OPO, 09/25/2026 – 10/02/2026: From $993
    25

    Fr

  • SEA–OPO, 09/26/2026 – 10/10/2026: From $1,060
    26

    Sa

  • SEA–OPO, 09/27/2026 – 10/04/2026: From $993
    27

    Su

  • SEA–OPO, 09/28/2026 – 10/05/2026: From $993
    28

    Mo

  • SEA–OPO, 09/29/2026 – 10/20/2026: From $933
    29

    Tu

  • SEA–OPO, 09/30/2026 – 10/14/2026: From $1,176
    30

    We

  • SEA–OPO, 10/01/2026 – 10/08/2026: From $993
    01

    Th

    oct

  • SEA–OPO, 10/02/2026 – 10/23/2026: From $993
    02

    Fr

  • SEA–OPO, 10/03/2026 – 10/10/2026: From $1,060
    03

    Sa

  • SEA–OPO, 10/04/2026 – 10/11/2026: From $897
    04

    Su

  • SEA–OPO, 10/05/2026 – 11/02/2026: From $855
    05

    Mo

  • SEA–OPO, 10/06/2026 – 11/03/2026: From $795
    06

    Tu

    • Range$795-$1,213

    *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    		10/20/2026 - 11/17/2026

    From

    $738

    Seen: 2 hrs ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		10/27/2026 - 11/24/2026

    From

    $738

    Seen: 2 hrs ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		11/10/2026 - 11/24/2026

    From

    $738

    Seen: 2 hrs ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		11/24/2026 - 12/08/2026

    From

    $738

    Seen: 2 hrs ago

    Seattle (SEA)Porto (OPO)Round-trip
    /
    Economy    		10/21/2026 - 11/18/2026

    From

    $738

    Seen: 2 hrs 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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