Question 1

How popular is this Denver to San Diego flight route?

Accepted Answer

This flight path from Denver Intl to San Diego was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 2

How long is the flight from Denver to San Diego?

Accepted Answer

A quick flight from Denver to San Diego can take about 2h 20m. Alaska Airlines provides one of the quickest options available for as low as £87. The distance between Denver and San Diego is about 852 mi. All flights are typically direct.

Question 3

What is the cheapest airline to fly from Denver to San Diego round-trip?

Accepted Answer

Our cheapest airline available from Denver to San Diego is Frontier. Our recent data shows that you can find tickets from as low as £46 on this airline. Frontier is priced at 68% lower than the current average price of a flight leaving 3 months from now.

Question 4

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

Accepted Answer

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as £44. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from Denver to San Diego for a low price.

Question 5

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

Accepted Answer

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 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 6

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

Accepted Answer

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.

Question 7

What is the cheapest day to fly from Denver to San Diego?

Accepted Answer

Travellers seeking maximum savings on their Denver to San Diego flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 8

Weekly flight availability from Denver to San Diego

Accepted Answer

The most flights from DEN to SAN are scheduled on a Monday (30 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

Question 9

E

Accepted Answer

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.

Question 10

E

Accepted Answer

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).

Question 11

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

Accepted Answer

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 (71%), Air Canada (67%), Southwest( 60%).

Question 12

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

Accepted Answer

Find a great deal and save up to 66% by booking at least 36 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Denver to San Diego within the next two weeks, with the cheapest ticket starting at £132.

Question 13

What is the cheapest month to fly from Denver to San Diego?

Accepted Answer

Flights from Denver to San Diego lean towards being more expensive in March. Prices are generally better when you fly from Denver to San Diego in October, with the cheapest ticket starting at £39.

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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 21m on average. When it comes time to book airfare, you have a few options: there are 21 outbound flights from Denver Intl to San Diego offered by 1 airline.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Question 21

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

Accepted Answer

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

Question 22

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

Accepted Answer

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.

Round-trip from	£82
One-way from	£44
Popular in	March
Cheapest in	October
Average price	£147

Cheap flights from Denver to San Diego from £44

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 22/11. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Denver to San DiegoExplore 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 26 August 2025.

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 26 August 2025.

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Best time to book a flight from Denver to San Diego

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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?

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

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

Weekly flight availability from Denver to San Diego

Reviews of airlines servicing San Diego

Read through reviews of airlines operating flights from Denver to San Diego, such as Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

How popular is this Denver to San Diego flight route?

How long is the flight from Denver to San Diego?

What is the cheapest airline to fly from Denver to San Diego round-trip?

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

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

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

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

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

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

Travelling to a place near San Diego?

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

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

Can Cheapflights 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?

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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 26 August 2025.