Alaska Airlines Flights from San Diego to Denver

Flexpay logo

Book now. Pay later.

Spread the cost of your flight over low monthly payments.

Learn more

Lowest fares from San Diego to Denver

Jul 2025
From$168*
Seen: 23 hours ago
Flight Type One Way|Saver
$125
Displaying fares for July-2025
  • 16

    We

    JUL

  • 17

    Th

  • 18

    Fr

  • 19

    Sa

  • 20

    Su

  • 21

    Mo

  • 22

    Tu

  • 23

    We

  • 24

    Th

  • 25

    Fr

  • 26

    Sa

  • 27

    Su

  • 28

    Mo

  • 29

    Tu

  • 30

    We

  • 31

    Th

  • 01

    Fr

    AUG

  • 02

    Sa

  • 03

    Su

  • 04

    Mo

  • 05

    Tu

  • 06

    We

  • 07

    Th

  • 08

    Fr

  • 09

    Sa

  • 10

    Su

  • 11

    Mo

  • 12

    Tu

  • 13

    We

  • 14

    Th

  • 15

    Fr

    • Range$125-$388

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights San Diego to Denver.*

    $
    keyboard_arrow_down
    One-way low-fare flights San Diego to Denver.*
    From
    To
    Fare Type
    Dates
    Price
    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Oct 8, 2025

    From

    $69

    Seen: 13 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Nov 7, 2025

    From

    $79

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Oct 19, 2025

    From

    $79

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Aug 19, 2025

    From

    $108

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Aug 15, 2025

    From

    $125

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Aug 13, 2025

    From

    $125

    Seen: 2 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Aug 27, 2025

    From

    $125

    Seen: 4 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Jul 29, 2025

    From

    $168

    Seen: 23 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    Explore Alaska Airlines's Flights to Top-Pick Destinations