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

Airfare is below average for this route at the moment. Denver to San Diego flights typically cost between £119 and £201 in September. The cheapest return price found within the last 5 days was £118 on Southwest (9 Sept–12 Sept).

Question 1

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Question 2

Which airline has the best punctuality record on Denver to San Diego flights?

Accepted Answer

Over the past year, Alaska Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

Question 3

How often are flights from Denver to San Diego delayed?

Accepted Answer

About 20% of weekly flights between Denver and San Diego have experienced delays in the past year, with the average delay time being 130 minutes.

Question 4

What is the most punctual flight time for Denver to San Diego flights?

Accepted Answer

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

Question 5

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

Accepted Answer

Airfare is below average for this route at the moment.Denver to San Diego flights typically cost between £119 and £201 in September.
The cheapest return price found within the last 5 days was £118 on Southwest (9 Sept–12 Sept).

Question 6

How popular is this Denver to San Diego flight route?

Accepted Answer

This flight path from Denver Intl to San Diego was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 7

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. Southwest provides one of the quickest options available for as low as £148. The distance between Denver and San Diego is about 852 mi. This flight may include one or multiple stops.

Question 8

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

Question 9

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

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Denver to San Diego (average of £90). Flying from Denver to San Diego in June is currently the most expensive (average of £201). 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 10

Weekly flight availability from Denver to San Diego

Accepted Answer

The most flights from DEN to SAN are scheduled on a Wednesday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

Question 11

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 12

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 13

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: Volaris (78%), Alaska Airlines (75%), Frontier( 73%).

Question 14

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

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Denver to San Diego at midday. If you’re flexible enough to do this you can expect to save up to 71% on your trip compared to booking a flight in the evening.

Question 15

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 16

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 17

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 18

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 19

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 20

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 21

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	£118
One-way from	£67
Popular in	June
Cheapest in	February
Average price	£198

Cheap flights from Denver to San Diego from £67

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Denver to San Diego

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 29 July 2026.

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 29 July 2026.

Best flights from Denver to San DiegoDiscover carefully curated flight deals from Denver to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 July 2026.

Discover carefully curated flight deals from Denver to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 July 2026.

Direct flights from Denver to San DiegoExplore direct flight options from Denver to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 July 2026.

Explore direct flight options from Denver to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 July 2026.

Last-minute flights from Denver to San DiegoDiscover last-minute flight deals from Denver to San Diego. Data last updated 29 July 2026 and is based on user searches.

Discover last-minute flight deals from Denver to San Diego. Data last updated 29 July 2026 and is based on user searches.

One-way flights from Denver to San DiegoSearch for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated 29 July 2026.

Search for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated 29 July 2026.

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Cheapflights Insights

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?

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

A simple way to save on the total cost of your ticket is to fly from Denver to San Diego at midday. If you’re flexible enough to do this you can expect to save up to 71% on your trip compared to booking a flight in the evening.

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

Airfare is below average for this route at the moment.

Denver to San Diego flights typically cost between £119 and £201 in September.The cheapest return price found within the last 5 days was £118 on Southwest (9 Sept–12 Sept).

Weekly flight availability from Denver to San Diego

The most flights from DEN to SAN are scheduled on a Wednesday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

How often are flights from Denver to San Diego delayed?

About 20% of weekly flights between Denver and San Diego have experienced delays in the past year, with the average delay time being 130 minutes.

What is the most punctual flight time for Denver to San Diego flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Denver to San Diego flights?

Over the past year, Alaska Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

Related info for your journey

How popular is this Denver to San Diego flight route?

How long is the flight from Denver to San Diego?

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?

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Denver and San Diego flights

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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 29 July 2026.

Best flights from Denver to San Diego
Discover carefully curated flight deals from Denver to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 July 2026.

Direct flights from Denver to San Diego
Explore direct flight options from Denver to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 July 2026.

Last-minute flights from Denver to San Diego
Discover last-minute flight deals from Denver to San Diego. Data last updated 29 July 2026 and is based on user searches.

One-way flights from Denver to San Diego
Search for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated 29 July 2026.

Denver to San Diego flights typically cost between £119 and £201 in September.
The cheapest return price found within the last 5 days was £118 on Southwest (9 Sept–12 Sept).