Flights from Seattle, WA to Denver, CO

Promo Code

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

Try alternate month or interact with individual days below in order to find offers.
Aug 2026
No results for this month.
Sep 2026
from$63*
Last seen: 1 hour ago
One-way/Economy
Oct 2026
from$88*
Last seen: 19 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $63
cmp-daily-histogram-bars-legend-max-price-aria-label $219
Displaying fares for August-2026
  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

    AUG

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

  • SEA–DEN, Sep 2, 2026: from $159
    02

    Wed

  • SEA–DEN, Sep 3, 2026: from $165
    03

    Thu

  • SEA–DEN, Sep 4, 2026: from $219
    04

    Fri

  • SEA–DEN, Sep 5, 2026: from $165
    05

    Sat

  • SEA–DEN, Sep 6, 2026: from $149
    06

    Sun

  • SEA–DEN, Sep 7, 2026: from $169
    07

    Mon

  • SEA–DEN, Sep 8, 2026: from $149
    08

    Tue

  • SEA–DEN, Sep 9, 2026: from $155
    09

    Wed

  • SEA–DEN, Sep 10, 2026: from $155
    10

    Thu

  • SEA–DEN, Sep 11, 2026: from $155
    11

    Fri

  • SEA–DEN, Sep 12, 2026: from $139
    12

    Sat

  • SEA–DEN, Sep 13, 2026: from $135
    13

    Sun

  • SEA–DEN, Sep 14, 2026: from $129
    14

    Mon

  • SEA–DEN, Sep 15, 2026: from $129
    15

    Tue

  • SEA–DEN, Sep 16, 2026: from $129
    16

    Wed

  • SEA–DEN, Sep 17, 2026: from $129
    17

    Thu

  • SEA–DEN, Sep 18, 2026: from $129
    18

    Fri

  • SEA–DEN, Sep 19, 2026: from $88
    19

    Sat

  • SEA–DEN, Sep 20, 2026: from $128
    20

    Sun

  • SEA–DEN, Sep 21, 2026: from $93
    21

    Mon

  • SEA–DEN, Sep 22, 2026: from $63
    22

    Tue

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

  • SEA–DEN, Sep 24, 2026: from $93
    24

    Thu

  • SEA–DEN, Sep 25, 2026: from $106
    25

    Fri

  • SEA–DEN, Sep 26, 2026: from $88
    26

    Sat

  • SEA–DEN, Sep 27, 2026: from $128
    27

    Sun

  • SEA–DEN, Sep 28, 2026: from $93
    28

    Mon

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

    • Range$63-$219

    *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 Dec 5, 2026

    From

    $63

    Last seen: 19 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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