Flights from San Diego, CA to Denver, CO

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Best Deals on Flights From San Diego, CA (SAN) 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$39*
Last seen: 45 mins ago
One-way/Economy
Oct 2026
from$39*
Last seen: 16 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $39
cmp-daily-histogram-bars-legend-max-price-aria-label $175
Displaying fares for August-2026
  • SAN–DEN: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

    AUG

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

    Mon

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

    Tue

    SEP

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

    Wed

  • SAN–DEN, Sep 3, 2026: from $159
    03

    Thu

  • SAN–DEN, Sep 4, 2026: from $159
    04

    Fri

  • SAN–DEN, Sep 5, 2026: from $159
    05

    Sat

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

    Sun

  • SAN–DEN, Sep 7, 2026: from $175
    07

    Mon

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

    Tue

  • SAN–DEN, Sep 9, 2026: from $103
    09

    Wed

  • SAN–DEN, Sep 10, 2026: from $149
    10

    Thu

  • SAN–DEN, Sep 11, 2026: from $149
    11

    Fri

  • SAN–DEN, Sep 12, 2026: from $103
    12

    Sat

  • SAN–DEN, Sep 13, 2026: from $129
    13

    Sun

  • SAN–DEN, Sep 14, 2026: from $135
    14

    Mon

  • SAN–DEN, Sep 15, 2026: from $110
    15

    Tue

  • SAN–DEN, Sep 16, 2026: from $110
    16

    Wed

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

    Thu

  • SAN–DEN, Sep 18, 2026: from $76
    18

    Fri

  • SAN–DEN, Sep 19, 2026: from $43
    19

    Sat

  • SAN–DEN, Sep 20, 2026: from $76
    20

    Sun

  • SAN–DEN, Sep 21, 2026: from $39
    21

    Mon

  • SAN–DEN, Sep 22, 2026: from $43
    22

    Tue

  • SAN–DEN, Sep 23, 2026: from $43
    23

    Wed

  • SAN–DEN, Sep 24, 2026: from $39
    24

    Thu

  • SAN–DEN, Sep 25, 2026: from $58
    25

    Fri

  • SAN–DEN, Sep 26, 2026: from $43
    26

    Sat

  • SAN–DEN, Sep 27, 2026: from $76
    27

    Sun

  • SAN–DEN, Sep 28, 2026: from $58
    28

    Mon

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

    Tue

    • Range$39-$175

    *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 San Diego, CA to Denver, CO on Frontier

    $
    Flights Deals from San Diego, CA to Denver, CO on Frontier
    From
    To
    San Diego, CA (SAN)Denver, CO (DEN)One-way
    /
    Discount Den Basic Fare    		Departing Dec 9, 2026

    From

    $43

    Last seen: 22 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®.

    San Diego, CA Denver, CO

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