Flights from Washington, D.C. to Seattle, WA

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Best Deals on Flights From Washington, D.C. (DCA) to Seattle, WA (SEA)

Try alternate month or interact with individual days below in order to find offers.
Sep 2026
No results for this month.
Oct 2026
from$152*
Last seen: 3 hours ago
One-way/Economy
Nov 2026
from$152*
Last seen: 13 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $152
cmp-daily-histogram-bars-legend-max-price-aria-label $362
Displaying fares for September-2026
  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

    SEP

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

  • DCA–SEA, Oct 1, 2026: from $280
    01

    Thu

    OCT

  • DCA–SEA, Oct 2, 2026: from $280
    02

    Fri

  • DCA–SEA, Oct 3, 2026: from $280
    03

    Sat

  • DCA–SEA, Oct 4, 2026: from $280
    04

    Sun

  • DCA–SEA, Oct 5, 2026: from $280
    05

    Mon

  • DCA–SEA, Oct 6, 2026: from $280
    06

    Tue

  • DCA–SEA, Oct 7, 2026: from $274
    07

    Wed

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    08

    Thu

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    09

    Fri

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    10

    Sat

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    11

    Sun

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    12

    Mon

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • DCA–SEA, Oct 14, 2026: from $262
    14

    Wed

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    15

    Thu

  • DCA–SEA, Oct 16, 2026: from $223
    16

    Fri

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • DCA–SEA, Oct 18, 2026: from $362
    18

    Sun

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    19

    Mon

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

  • DCA–SEA, Oct 22, 2026: from $152
    22

    Thu

  • DCA–SEA, Oct 23, 2026: from $152
    23

    Fri

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    27

    Tue

  • DCA–SEA: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

    • Range$152-$362

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Washington, D.C. to Seattle, WA on Frontier

    $
    Flights Deals from Washington, D.C. to Seattle, WA on Frontier
    From
    To
    Washington, D.C. (DCA)Seattle, WA (SEA)One-way
    /
    Discount Den Basic Fare    		Departing Dec 28, 2026

    From

    $536

    Last seen: 9 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Washington, D.C. Seattle, WA

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