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Flights from Denver to San Diego

Airlines Flying from Denver to San Diego

Choose from 2 carriers that fly from Denver to San Diego, including Alaska Airlines, Hawaiian Airlines, Enjoy the cheapest tickets on this route with Frontier Airlines.
Alaska Airlines logo Alaska Airlines Hawaiian Airlines logo Hawaiian Airlines

Find direct flights from Denver to San Diego within the next three months. Book one-way flights from £22 or return tickets from £40.

      • Cheapest nonstop
        DEN 17:43
        2h 32m
        Direct
        SAN 19:15
        Denver - San Diego | Thu, Dec 18 | Frontier Airlines
        SAN 06:25
        2h 38m
        Direct
        DEN 10:03
        San Diego - Denver | Wed, Dec 24 | Frontier Airlines
        £40 £60
        33% OFF
        33% OFF
        £60 £40
      • DEN 17:43
        2h 32m
        Direct
        SAN 19:15
        Denver - San Diego | Fri, Jan 2 | Frontier Airlines
        SAN 07:00
        2h 36m
        Direct
        DEN 10:36
        San Diego - Denver | Tue, Jan 6 | Frontier Airlines
        £43 £60
        28% OFF
        28% OFF
        £60 £43
      • DEN 22:29
        2h 30m
        Direct
        SAN 23:59
        Denver - San Diego | Thu, Jan 1 | Frontier Airlines
        SAN 06:36
        2h 38m
        Direct
        DEN 10:14
        San Diego - Denver | Thu, Jan 8 | Frontier Airlines
        £43 £60
        28% OFF
        28% OFF
        £60 £43
      • DEN 22:29
        2h 30m
        Direct
        SAN 23:59
        Denver - San Diego | Thu, Dec 11 | Frontier Airlines
        SAN 16:47
        2h 33m
        Direct
        DEN 20:20
        San Diego - Denver | Thu, Dec 18 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 17:43
        2h 32m
        Direct
        SAN 19:15
        Denver - San Diego | Fri, Dec 12 | Frontier Airlines
        SAN 16:47
        2h 33m
        Direct
        DEN 20:20
        San Diego - Denver | Thu, Dec 18 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 22:29
        2h 30m
        Direct
        SAN 23:59
        Denver - San Diego | Mon, Dec 15 | Frontier Airlines
        SAN 16:47
        2h 33m
        Direct
        DEN 20:20
        San Diego - Denver | Thu, Dec 18 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 14:22
        2h 30m
        Direct
        SAN 15:52
        Denver - San Diego | Sat, Dec 13 | Frontier Airlines
        SAN 16:47
        2h 33m
        Direct
        DEN 20:20
        San Diego - Denver | Thu, Dec 18 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 17:43
        2h 32m
        Direct
        SAN 19:15
        Denver - San Diego | Sun, Dec 14 | Frontier Airlines
        SAN 16:47
        2h 33m
        Direct
        DEN 20:20
        San Diego - Denver | Thu, Dec 18 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 22:29
        2h 30m
        Direct
        SAN 23:59
        Denver - San Diego | Fri, Dec 19 | Frontier Airlines
        SAN 06:25
        2h 38m
        Direct
        DEN 10:03
        San Diego - Denver | Wed, Dec 24 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 21:15
        2h 31m
        Direct
        SAN 22:46
        Denver - San Diego | Wed, Dec 17 | Frontier Airlines
        SAN 06:25
        2h 38m
        Direct
        DEN 10:03
        San Diego - Denver | Wed, Dec 24 | Frontier Airlines
        £43
        28% OFF
        £60 £43
      • DEN 13:00
        17h 25m
        1 stop
        SAN Invalid Date
        Denver - San Diego | Mon, Nov 17 | Normal Airline
        SAN 15:00
        6h
        Direct
        DEN 16:00
        San Diego - Denver | Wed, Nov 19 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Information from Denver to San Diego

The distance between Denver and San Diego is about 1,371.45km. It takes around 2 hours 52 minutes on average to fly from Denver to San Diego. The most popular month to San Diego is July. The off-season for travel is December.

Cheapest one-way flight price£22
Cheapest return ticket price£40
Off-season travel monthDecember
Peak season for travelJuly
Flight distance1,371.45km
Average flight time2 hours 52 minutes
Popular airlineAlaska Airlines

Find the best time to fly from Denver to San Diego

The cheapest time for Denver to San Diego flights: Dec 7 to Dec 14 — one way flight prices from £22.

Cheapest flights
From price
Search
  • 916
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • Which airlines offer direct flights from Denver to San Diego?

    At the moment, you can catch a direct flight from Denver to San Diego with the following airlines, including: Hawaiian Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 2 hours 52 minutes to fly from Denver (DEN) to San Diego (SAN).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Denver to San Diego is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 48 flight per week flying from Denver to San Diego. You can check the weekly schedule for popular airlines on this route below: Hawaiian Airlines: S/M/T/W/T/F/S -- HA4762 (08:23)
  • The cheapest months to fly from Denver to San Diego is December, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Denver to San Diego on November 26, 2025 with Frontier Airlines, with prices starting at £22.
  • You can land at any one of the following hubs in San Diego, with Denver International Airport to San Diego International Airport (DEN-SAN) is by far the most common option on this route: McClellan-Palomar Airport (CLD) Marine Corps Air Station Miramar (NKX) San Diego International Airport (SAN).
  • The time difference between San Diego and Denver is 1h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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