Flights Washington, D.C. – Porto (IAD-OPO) from $698*

*Modifying this information may result in a different fare

Book flights from Washington, D.C. to Porto

cmp-daily-histogram-bars-legend-min-price-aria-label $853
cmp-daily-histogram-bars-legend-max-price-aria-label $1.3K
Displaying fares for September-2026
  • IAD–OPO, 09/01/2026 – 09/15/2026: From $1,072
    01

    Tu

    sep

  • IAD–OPO, 09/02/2026 – 09/09/2026: From $1,072
    02

    We

  • IAD–OPO, 09/03/2026 – 09/24/2026: From $1,259
    03

    Th

  • IAD–OPO, 09/04/2026 – 09/11/2026: From $1,259
    04

    Fr

  • IAD–OPO, 09/05/2026 – 09/12/2026: From $1,202
    05

    Sa

  • IAD–OPO, 09/06/2026 – 09/20/2026: From $1,132
    06

    Su

  • IAD–OPO, 09/07/2026 – 09/21/2026: From $1,132
    07

    Mo

  • IAD–OPO, 09/08/2026 – 09/22/2026: From $1,072
    08

    Tu

  • IAD–OPO, 09/09/2026 – 09/30/2026: From $1,079
    09

    We

  • IAD–OPO, 09/10/2026 – 09/17/2026: From $1,142
    10

    Th

  • IAD–OPO, 09/11/2026 – 10/02/2026: From $1,142
    11

    Fr

  • IAD–OPO, 09/12/2026 – 09/26/2026: From $1,202
    12

    Sa

  • IAD–OPO, 09/13/2026 – 09/20/2026: From $1,132
    13

    Su

  • IAD–OPO, 09/14/2026 – 10/12/2026: From $1,132
    14

    Mo

  • IAD–OPO, 09/15/2026 – 09/22/2026: From $1,072
    15

    Tu

  • IAD–OPO, 09/16/2026 – 09/30/2026: From $1,079
    16

    We

  • IAD–OPO, 09/17/2026 – 10/08/2026: From $1,025
    17

    Th

  • IAD–OPO, 09/18/2026 – 09/25/2026: From $1,030
    18

    Fr

  • IAD–OPO, 09/19/2026 – 09/26/2026: From $1,085
    19

    Sa

  • IAD–OPO, 09/20/2026 – 10/11/2026: From $1,032
    20

    Su

  • IAD–OPO, 09/21/2026 – 10/12/2026: From $1,025
    21

    Mo

  • IAD–OPO, 09/22/2026 – 09/29/2026: From $965
    22

    Tu

  • IAD–OPO, 09/23/2026 – 09/30/2026: From $972
    23

    We

  • IAD–OPO, 09/24/2026 – 10/01/2026: From $1,025
    24

    Th

  • IAD–OPO, 09/25/2026 – 10/02/2026: From $1,030
    25

    Fr

  • IAD–OPO, 09/26/2026 – 10/24/2026: From $1,085
    26

    Sa

  • IAD–OPO, 09/27/2026 – 10/25/2026: From $1,025
    27

    Su

  • IAD–OPO, 09/28/2026 – 10/12/2026: From $913
    28

    Mo

  • IAD–OPO, 09/29/2026 – 10/06/2026: From $853
    29

    Tu

  • IAD–OPO, 09/30/2026 – 10/28/2026: From $853
    30

    We

  • Range$853-$1,259

    The best deals on flights from Washington, D.C. to Porto for the upcoming months

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    The best deals on flights from Washington, D.C. to Porto for the upcoming months
    From
    To
    Fare Type
    Dates
    Price
    Washington, D.C. (IAD)Porto (OPO)Round-trip
    /
    Economy
    10/20/2026 - 11/17/2026

    From

    $698

    Seen: 4 hrs ago

    Washington, D.C. (IAD)Porto (OPO)Round-trip
    /
    Economy
    10/27/2026 - 11/03/2026

    From

    $698

    Seen: 4 hrs ago

    Washington, D.C. (IAD)Porto (OPO)Round-trip
    /
    Economy
    10/27/2026 - 11/24/2026

    From

    $698

    Seen: 4 hrs ago

    Washington, D.C. (IAD)Porto (OPO)Round-trip
    /
    Economy
    10/28/2026 - 11/04/2026

    From

    $698

    Seen: 4 hrs ago

    Washington, D.C. (IAD)Porto (OPO)Round-trip
    /
    Economy
    11/11/2026 - 11/18/2026

    From

    $698

    Seen: 1 day 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.
    Air France airplane

    Travel from Washington, D.C. to Porto with Air France

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