Flights from Seattle, WA to Denver, CO

Promo Code

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

Oct 2026
from$135*
Last seen: 3 hours ago
One-way/Economy
Nov 2026
from$83*
Last seen: 2 hours ago
One-way/Economy
Dec 2026
from$74*
Last seen: 13 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $93
cmp-daily-histogram-bars-legend-max-price-aria-label $195
Displaying fares for October-2026
  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

    OCT

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

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

    Mon

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

    Tue

  • SEA–DEN, Oct 21, 2026: from $194
    21

    Wed

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

    Thu

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

    Fri

  • SEA–DEN, Oct 24, 2026: from $189
    24

    Sat

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

    Sun

  • SEA–DEN, Oct 26, 2026: from $189
    26

    Mon

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

    Tue

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

    Wed

  • SEA–DEN, Oct 29, 2026: from $190
    29

    Thu

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

    Fri

  • SEA–DEN, Oct 31, 2026: from $135
    31

    Sat

  • SEA–DEN, Nov 1, 2026: from $164
    01

    Sun

    NOV

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

    Mon

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

    Tue

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

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

    Fri

  • SEA–DEN, Nov 7, 2026: from $93
    07

    Sat

  • SEA–DEN, Nov 8, 2026: from $139
    08

    Sun

  • SEA–DEN, Nov 9, 2026: from $129
    09

    Mon

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

    Tue

  • SEA–DEN, Nov 11, 2026: from $109
    11

    Wed

  • SEA–DEN, Nov 12, 2026: from $195
    12

    Thu

  • SEA–DEN, Nov 13, 2026: from $118
    13

    Fri

  • SEA–DEN, Nov 14, 2026: from $93
    14

    Sat

  • SEA–DEN, Nov 15, 2026: from $139
    15

    Sun

  • SEA–DEN, Nov 16, 2026: from $93
    16

    Mon

    • Range$93-$195

    *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 Seattle, WA to Denver, CO on Frontier

    $
    Flights Deals from Seattle, WA to Denver, CO on Frontier
    From
    To
    Seattle, WA (SEA)Denver, CO (DEN)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®.

    Seattle, WA Denver, CO

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