Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Denver to San Diego from £68

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
9 Jan — 16 Jan1
1 adult

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 January 2025.

Round-trip from

£127

One-way from

£68

Popular in

December

Cheapest in

May

Average price

£127
United Airlines
  • United Airlines
  • 15/2-15/2
  • Nonstop
  • 5h 01m total
  • Denver to San Diego
United Airlines
  • United Airlines
  • 19/2
  • 1 total stop
  • 5h 44m total
  • Denver to San Diego
High demand for flights, 15% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for round-trip flights in January 2025

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 January 2025.

Sat 15/207:54DEN - SAN
Nonstop2h 35mUnited Airlines
Sat 15/216:09SAN - DEN
Nonstop2h 26mUnited Airlines
Deal found 4/1£127
Sun 9/220:40DEN - SAN
Nonstop2h 30mSouthwest
Tue 11/216:40SAN - DEN
Nonstop2h 20mSouthwest
Deal found 4/1£143
Tue 25/207:00DEN - SAN
1 stop6h 46mAlaska Airlines
Wed 26/206:15SAN - DEN
2 stops16h 14mAlaska Airlines
Deal found 3/1£173
Thu 27/306:55DEN - SAN
1 stop4h 20mDelta
Tue 1/418:05SAN - DEN
1 stop4h 13mDelta
Deal found 2/1£219

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 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sat 15/2

07:54-09:29

Nonstop2h 35m

San Diego

Sat 15/2

16:09-19:35

Nonstop2h 26m

£127

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sun 9/2

20:40-22:10

Nonstop2h 30m

San Diego

Tue 11/2

16:40-20:00

Nonstop2h 20m

£143

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 25/2

07:00-12:46

1 stop6h 46m

San Diego

Wed 26/2

06:15-23:29

2 stops16h 14m

£173

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 14/2

06:50-10:18

1 stop4h 28m

San Diego

Mon 17/2

17:45-23:00

1 stop4h 15m

£175

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 19/2

10:15-14:59

1 stop5h 44m

£68

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sat 1/2

10:20-16:09

1 stop6h 49m

£88

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 7/3

19:55-09:47

1 stop14h 52m

£94

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 4/3

07:00-13:35

2 stops7h 35m

£112

Flights are sorted by cheapest return flights first.

Deals found on 3/1

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 27 December 2024.

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 68 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 January 2025.

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.

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 January 2025.

The most flights from DEN to SAN are scheduled on a Friday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 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 January 2025.
Read reviews from past customers who have flown United Airlines, Alaska Airlines and Southwest 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.
8.1
Very Good
4,679 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

8.1
Very Good
4,679 reviews
8.1
Very Good
4,679 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

8.0
Very Good
9,606 reviews
8.1
Very Good
4,679 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

8.0
Very Good
8,526 reviews
8.1
Very Good
4,679 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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

7.4
Good
8,963 reviews
8.1
Very Good
4,679 reviews

Comfort

8.1

Crew

8.7

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

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 30m on average. When it comes time to book airfare, you have a few options: there are 18 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 United Airlines. Our recent data shows that you can find tickets from as low as £127 on this airline. Additional options worth looking into are Southwest and Alaska Airlines, starting at £143 and £173 round-trip. United Airlines is priced at 9% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as £68. However, be on the lookout for offers from Delta and Alaska Airlines, 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: United Airlines (82%), Air Canada (79%), Copa Airlines( 79%).

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

    While on average a flight from Denver to San Diego is generally £53, our data shows the cheapest flight currently is £49. When looking at the most popular route, (Denver Intl - San Diego), you can expect to pay £128 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 January 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£31Average£54FlexibilityNo cancel feeOn-time62%
Search Frontier 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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.