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Cheap flights from Denver to San Diego from £88

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
9 Feb — 16 Feb1
1 adult

The best prices from Denver Intl to San Diego are usually found in May or April, booked 61 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap 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 4 February 2025.

Round-trip from

£176

One-way from

£88

Popular in

November

Cheapest in

May

Average price

£121

Good round-trip deal

£51 or less
Southwest
  • Southwest
  • 1/3-3/3
  • Nonstop
  • 4h 55m total
  • Denver to San Diego
Alaska Airlines
  • Alaska Airlines
  • 5/3
  • 1 total stop
  • 6h 45m total
  • Denver to San Diego
Highest demand for flights based on searches. 13% potential increase in price (£16 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Denver Intl to San Diego.

Find flight deals from Denver to San Diego

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 4 February 2025.

Sat 1/318:00DEN - SAN
Nonstop2h 40mSouthwest
Mon 3/320:30SAN - DEN
Nonstop2h 15mSouthwest
Deal found 2/2£176
Tue 4/307:00DEN - SAN
2 stops25h 36mAlaska Airlines
Tue 11/307:00SAN - DEN
1 stop8h 12mAlaska Airlines
Deal found 4/2£182
Tue 25/312:15DEN - SAN
1 stop4h 55mDelta
Thu 27/306:20SAN - DEN
1 stop5h 43mDelta
Deal found 2/2£198
Tue 25/307:54DEN - SAN
Nonstop2h 35mUnited Airlines
Tue 25/318:50SAN - DEN
Nonstop2h 25mUnited Airlines
Deal found 2/2£208

Find flights from Denver to San Diego within your budget

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 4 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sat 1/3

18:00-19:40

Nonstop2h 40m

San Diego

Mon 3/3

20:30-23:45

Nonstop2h 15m

£176

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 4/3

07:00-07:36

2 stops25h 36m

San Diego

Tue 11/3

07:00-16:12

1 stop8h 12m

£182

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 25/3

12:15-16:10

1 stop4h 55m

San Diego

Thu 27/3

06:20-13:03

1 stop5h 43m

£198

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 25/3

07:54-09:29

Nonstop2h 35m

San Diego

Tue 25/3

18:50-22:15

Nonstop2h 25m

£208

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 5/3

14:50-20:35

1 stop6h 45m

£88

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 5/3

07:54-09:29

Nonstop2h 35m

£88

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 28/2

18:45-22:51

1 stop5h 06m

£105

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 27/3

05:20-09:25

1 stop5h 05m

£109

Flights are sorted by cheapest return flights first.

Deals found on 4/2

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.

Travel insights for flights from Denver to San Diego

Get recent, data-driven insights about flights from Denver to San Diego including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Denver to San Diego. Price data was last updated on 31 January 2025.

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 61 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, January is the cheapest month in which you can book a flight from Denver to San Diego (average of £585). Flying from Denver to San Diego in July is currently the most expensive (average of £920). 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 4 February 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to San Diego in the morning. If you’re flexible enough to do this you can expect to save up to 63% on your trip compared to booking a flight at midday.

Weekly flight availability from Denver to San Diego

Explore weekly flight availability from Denver to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 February 2025.

The most flights from DEN to SAN are scheduled on a Thursday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (19 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 4 February 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Denver to San Diego. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

8.0
Very Good

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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.
  • What airports do I use to fly from Denver to San Diego?

    To fly from Denver to San Diego, you need to book a flight from Denver Intl (DEN) to San Diego (SAN). Nonstop flights to San Diego from Denver Intl take 2h 37m on average. When it comes time to book airfare, you have a few options: there are 24 outbound flights from Denver Intl to San Diego offered by 1 airline.

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

  • What are the cheapest airlines flying from Denver to San Diego round-trip?

    Our cheapest airline available from Denver to San Diego is Southwest. Our recent data shows that you can find tickets from as low as £176 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at £182 and £198 round-trip.

  • What are the cheapest airlines to fly from Denver to San Diego one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as £88. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Denver to San Diego for a low price.

  • 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: Frontier (83%), United Airlines (78%), Air Canada( 75%).

  • What are the cheapest flights from Denver to San Diego?

    While on average a flight from Denver to San Diego is generally £55, our data shows the cheapest flight currently is £50. When looking at the most popular route, (Denver Intl - San Diego), you can expect to pay £39 for that flight.

  • 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, January is the cheapest month in which you can book a flight from Denver to San Diego (average of £585). Flying from Denver to San Diego in July is currently the most expensive (average of £920). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
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.

Top airline flying from Denver to San Diego

Discover the top airline that operate flights from Denver to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 February 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£31Average£55FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

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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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