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Cheap flights from Denver to San Diego from £58

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
13 Jun — 20 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Denver to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Denver to San Diego
Explore the most affordable flight options available from Denver to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 May 2026.

Mon 1/622:29
DEN
-
SAN
Nonstop2h 21m
Frontier
Thu 4/606:25
SAN
-
DEN
Nonstop2h 36m
Frontier
Deal found 12/5£90
Tue 2/619:51
DEN
-
SAN
Nonstop2h 44m
Alaska Airlines
Tue 9/620:34
SAN
-
DEN
Nonstop2h 25m
Alaska Airlines
Deal found 11/5£116
Mon 1/619:20
DEN
-
SAN
Nonstop2h 26m
United Airlines
Mon 8/606:35
SAN
-
DEN
Nonstop2h 33m
United Airlines
Deal found 10/5£120
Mon 1/605:20
DEN
-
SAN
1 stop5h 39m
United Airlines
Tue 2/616:07
SAN
-
DEN
Nonstop2h 32m
United Airlines
Deal found 11/5£127
Sun 31/506:00
DEN
-
SAN
1 stop4h 59m
United Airlines
Thu 4/606:35
SAN
-
DEN
Nonstop2h 33m
United Airlines
Deal found 9/5£131
Thu 4/619:51
DEN
-
SAN
Nonstop2h 44m
Alaska Airlines
Mon 8/620:15
SAN
-
DEN
Nonstop2h 34m
Alaska Airlines
Deal found 10/5£142
Thu 4/618:30
DEN
-
SAN
1 stop5h 45m
Delta
Mon 8/606:15
SAN
-
DEN
1 stop4h 38m
Delta
Deal found 12/5£146
Fri 5/618:30
DEN
-
SAN
1 stop5h 45m
Delta
Mon 8/606:15
SAN
-
DEN
1 stop4h 38m
Delta
Deal found 12/5£153
Tue 9/606:00
DEN
-
SAN
Nonstop2h 25m
Southwest
Tue 16/619:15
SAN
-
DEN
Nonstop2h 20m
Southwest
Deal found 12/5£157
Fri 5/608:30
DEN
-
SAN
1 stop3h 50m
Southwest
Mon 8/616:25
SAN
-
DEN
1 stop4h 00m
Southwest
Deal found 10/5£160
Sat 6/618:05
DEN
-
SAN
Nonstop2h 35m
Southwest
Mon 8/619:35
SAN
-
DEN
Nonstop2h 20m
Southwest
Deal found 11/5£164

Find flight deals from Denver to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 May 2026.

Round-trip from

£90

One-way from

£58

Popular in

June

Cheapest in

February

Average price

£145
Frontier
  • Frontier
  • 1/6-4/6
  • Nonstop
  • 4h 57m total
  • Denver to San Diego
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/6
  • Nonstop
  • 2h 41m total
  • Denver to San Diego
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Denver to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 May 2026.
Use the filters below to find and compare flights from Denver to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 25/6

06:00-07:34

Nonstop2h 34m

San Diego

Thu 2/7

07:00-10:33

Nonstop2h 33m

£197

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 26/6

17:20-20:40

1 stop4h 20m

San Diego

Tue 7/7

14:40-23:05

2 stops7h 25m

£213

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sun 31/5

05:35-08:30

1 stop3h 55m

San Diego

Wed 3/6

08:40-15:05

2 stops5h 25m

£234

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 2/7

05:40-08:42

1 stop4h 02m

San Diego

Fri 3/7

19:56-11:34

1 stop14h 38m

£256

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sun 21/6

07:50-13:30

2 stops6h 40m

San Diego

Thu 25/6

17:10-23:05

1 stop4h 55m

£353

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sat 3/10

07:50-13:15

1 stop6h 25m

San Diego

Sun 11/10

06:50-14:32

1 stop6h 42m

£441

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 15/7

16:36-23:16

1 stop7h 40m

San Diego

Thu 16/7

20:01-23:30

Nonstop2h 29m

£493

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 15/9

12:45-22:55

2 stops11h 10m

San Diego

Thu 17/9

06:15-11:54

1 stop4h 39m

£606

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 3/7

05:40-15:11

2 stops10h 31m

San Diego

Mon 6/7

06:15-11:53

1 stop4h 38m

£606

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 6/8

05:18-15:09

2 stops10h 51m

San Diego

Mon 10/8

13:39-20:01

1 stop5h 22m

£636

Flights are sorted by cheapest return flights first.

Deals found on 10/5

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Denver to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Denver with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to San Diego

How far ahead should I book a flight from Denver to San Diego?

The price you pay for your flight from Denver to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Denver to San Diego?

Currently, February is the cheapest month in which you can book a flight from Denver to San Diego (average of £87). Flying from Denver to San Diego in June is currently the most expensive (average of £183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to SAN?

Find hourly flight availability from Denver to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 May 2026.

When flying from Denver to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Denver to San Diego?

Related info for your journey

Find useful and relevant information for your journey from Denver to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Denver to San Diego flight route?

    This flight path from Denver Intl to San Diego was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to San Diego?

    A quick flight from Denver to San Diego can take about 2h 26m. United Airlines provides one of the quickest options available for as low as £186. The distance between Denver and San Diego is about 852 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Denver to San Diego?

    Before booking your flight to San Diego from Denver, check out the most reliable airlines to get you to your destination on time: Volaris (91%), Lufthansa (91%), Air Canada( 89%).

  • Can I find deals for flights from Denver to San Diego that include hotel bookings?

    Yes. In addition to deals on Denver to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Denver to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to San Diego.

  • Can I find deals for business class flights from Denver to San Diego?

    Yes. Cheapflights offers flight deals from Denver to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to San Diego?

    Currently, February is the cheapest month in which you can book a flight from Denver to San Diego (average of £87). Flying from Denver to San Diego in June is currently the most expensive (average of £183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Alternative routes for Denver to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Santa Ana flights
Denver to San Francisco flights
Denver to Las Vegas flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Denver to San Diego?

Cheapflights helps you search for flights from Denver to San Diego via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Denver to San Diego?

Cheapflights simply makes it quick and affordable to book flights from Denver to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Denver to San Diego with no change fees?

Yes! Cheapflights helps users easily find flights from Denver to San Diego with no change fees.

Can Cheapflights notify me if prices for flights from Denver to San Diego become cheaper?

Yes, Cheapflights offers price alerts on Denver to San Diego flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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