Flights from Denver, CO to Seattle, WA

Promo Code

Best Deals on Flights From Denver, CO (DEN) to Seattle, WA (SEA)

Oct 2026
from$129*
Last seen: 14 hours ago
One-way/Economy
Nov 2026
from$83*
Last seen: 5 hours ago
One-way/Economy
Dec 2026
from$83*
Last seen: 13 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $83
cmp-daily-histogram-bars-legend-max-price-aria-label $220
Displaying fares for October-2026
  • DEN–SEA: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

    OCT

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

    Sat

  • DEN–SEA, Oct 18, 2026: from $220
    18

    Sun

  • DEN–SEA, Oct 19, 2026: from $194
    19

    Mon

  • DEN–SEA, Oct 20, 2026: from $194
    20

    Tue

  • DEN–SEA, Oct 21, 2026: from $179
    21

    Wed

  • DEN–SEA, Oct 22, 2026: from $179
    22

    Thu

  • DEN–SEA, Oct 23, 2026: from $184
    23

    Fri

  • DEN–SEA, Oct 24, 2026: from $155
    24

    Sat

  • DEN–SEA, Oct 25, 2026: from $184
    25

    Sun

  • DEN–SEA, Oct 26, 2026: from $184
    26

    Mon

  • DEN–SEA, Oct 27, 2026: from $155
    27

    Tue

  • DEN–SEA, Oct 28, 2026: from $149
    28

    Wed

  • DEN–SEA, Oct 29, 2026: from $170
    29

    Thu

  • DEN–SEA, Oct 30, 2026: from $143
    30

    Fri

  • DEN–SEA, Oct 31, 2026: from $129
    31

    Sat

  • DEN–SEA, Nov 1, 2026: from $170
    01

    Sun

    NOV

  • DEN–SEA, Nov 2, 2026: from $164
    02

    Mon

  • DEN–SEA, Nov 3, 2026: from $129
    03

    Tue

  • DEN–SEA, Nov 4, 2026: from $129
    04

    Wed

  • DEN–SEA, Nov 5, 2026: from $129
    05

    Thu

  • DEN–SEA, Nov 6, 2026: from $93
    06

    Fri

  • DEN–SEA, Nov 7, 2026: from $83
    07

    Sat

  • DEN–SEA: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • DEN–SEA, Nov 9, 2026: from $117
    09

    Mon

  • DEN–SEA, Nov 10, 2026: from $123
    10

    Tue

  • DEN–SEA, Nov 11, 2026: from $83
    11

    Wed

  • DEN–SEA, Nov 12, 2026: from $123
    12

    Thu

  • DEN–SEA, Nov 13, 2026: from $93
    13

    Fri

  • DEN–SEA, Nov 14, 2026: from $83
    14

    Sat

  • DEN–SEA, Nov 15, 2026: from $149
    15

    Sun

    • Range$83-$220

    *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 Denver, CO to Seattle, WA on Frontier

    $
    Flights Deals from Denver, CO to Seattle, WA on Frontier
    From
    To
    Denver, CO (DEN)Seattle, WA (SEA)One-way
    /
    Discount Den Basic Fare    		Departing Jan 16, 2027

    From

    $83

    Last seen: 16 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®.

    Denver, CO Seattle, WA

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