How often are flights from Denver to San Diego delayed?

About 21% of weekly flights between Denver and San Diego have experienced delays in the past year, with the average delay time being 130 minutes.

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

Tuesday 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 15% of flights being delayed.

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.

How popular is this Denver to San Diego flight route?

This flight path from Denver Intl to San Diego was viewed by 3 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 30m. Delta provides one of the quickest options available for as low as £164. The distance between Denver and San Diego is about 852 mi. This flight may include one or multiple stops.

Weekly flight availability from Denver to San Diego

The most flights from DEN to SAN are scheduled on a Friday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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.

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).

What are the cheapest flights from Denver to San Diego?

While on average a flight from Denver to San Diego is generally £120, our data shows the cheapest flight currently is £109. When looking at the most popular route, (Denver Intl - San Diego), you can expect to pay £119 for that flight.

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 (72%), Alaska Airlines (67%), Volaris( 66%).

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.

£64+ Cheap Flights from Denver to San Diego

Cheapflights Tip: The best prices from Denver Intl to San Diego are usually found in February or January, booked 89 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Denver to San Diego

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 11 October 2026.

Fri 13/1109:21 -

1 stop10h 17m

Mon 16/1116:52 -

Nonstop2h 32m

Deal found 7/10£100

Thu 12/1114:38 -

Nonstop2h 30m

Thu 12/1120:23 -

Nonstop2h 36m

Deal found 8/10£119

Thu 5/1107:30 -

2 stops12h 08m

Thu 12/1106:25 -

Nonstop2h 34m

Deal found 8/10£126

Thu 12/1114:38 -

Nonstop2h 30m

Thu 12/1119:38 -

1 stop15h 21m

Deal found 8/10£132

Wed 4/1112:05 -

Nonstop2h 25m

Wed 11/1117:40 -

Nonstop2h 25m

Deal found 7/10£149

Fri 13/1112:52 -

1 stop6h 55m

Mon 16/1106:30 -

1 stop4h 33m

Deal found 7/10£150

Thu 12/1107:15 -

Nonstop2h 30m

Tue 17/1106:35 -

Nonstop2h 25m

Deal found 8/10£150

Thu 12/1107:15 -

Nonstop2h 30m

Mon 16/1117:40 -

Nonstop2h 25m

Deal found 6/10£152

Tue 3/1113:25 -

Nonstop2h 30m

Tue 10/1112:37 -

1 stop6h 23m

Deal found 7/10£153

Fri 4/1206:10 -

Nonstop2h 30m

Tue 8/1219:00 -

Nonstop2h 20m

Deal found 7/10£156

Find flight deals from Denver to San Diego

Round-trip from	£100
One-way from	£64
Popular in	June
Cheapest in	February
Average price	£167
Good one-way deal	£118 or less

Frontier
13/11-16/11
1 total stop
12h 49m total
Denver to San Diego

Search Deals

Frontier
12/11-31/12
1 total stop
12h 18m total
Denver to San Diego

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£22 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 October 2026

Search Deals

Price to beat on a one-way flight from Denver Intl to San Diego.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sat 31/10

16:35-18:05

Nonstop2h 30m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£75

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Mon 4/1

07:02-08:46

Nonstop2h 44m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£76

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sat 14/11

18:10-22:33

1 stop5h 23m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£82

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Tue 10/11

08:50-13:00

2 stops5h 10m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£82

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sun 10/1

15:40-18:45

1 stop4h 05m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£86

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Wed 9/12

05:25-14:51

2 stops10h 26m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£104

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Wed 17/3

11:50-15:35

1 stop4h 45m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£106

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sat 9/1

06:30-22:49

2 stops17h 19m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£108

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Fri 4/12

05:25-22:52

2 stops18h 27m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£108

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Wed 7/4

05:40-09:06

1 stop4h 26m

San Diego

Wed 31/12

00:00-01:00

Nonstop0h 00m

£110

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 23 resultsSorted by cheapest first

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.

DEN-SAN

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

Prices

Airlines

Delays

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 88 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 £91). Flying from Denver to San Diego in June is currently the most expensive (average of £202). 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?

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 73% on your trip compared to booking a flight in the morning.

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 £110 and £227 in November.
The cheapest return price found within the last 5 days was £100 on Frontier (13 Nov–16 Nov).

Related info for your journey

How popular is this Denver to San Diego flight route?
This flight path from Denver Intl to San Diego was viewed by 3 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 30m. Delta provides one of the quickest options available for as low as £164. 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: Frontier (72%), Alaska Airlines (67%), Volaris( 66%).
What are the cheapest flights from Denver to San Diego?
While on average a flight from Denver to San Diego is generally £120, our data shows the cheapest flight currently is £109. When looking at the most popular route, (Denver Intl - San Diego), you can expect to pay £119 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, February is the cheapest month in which you can book a flight from Denver to San Diego (average of £91). Flying from Denver to San Diego in June is currently the most expensive (average of £202). 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

Coronado

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to California

Flights by cabin class

Other flight options

Other flights from Denver

Popular flights

San Diego flight routes

Alternative routes for Denver to San Diego

Denver to San Francisco flights

Denver to Las Vegas flights

Denver to Santa Ana flights

Fly with Cheapflights

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.

Cheap flights from Denver to San Diego from £64

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. 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 11 October 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 11 October 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 11 October 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 11 October 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 11 October 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 11 October 2026.

Last-minute flights from Denver to San DiegoDiscover last-minute flight deals from Denver to San Diego. Data last updated 11 October 2026 and is based on user searches.

Discover last-minute flight deals from Denver to San Diego. Data last updated 11 October 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 11 October 2026.

Search for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.

Find flight deals from Denver to San Diego

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Denver to San Diego that are best for you.

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.

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 88 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 73% on your trip compared to booking a flight in the morning.

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 £110 and £227 in November.The cheapest return price found within the last 5 days was £100 on Frontier (13 Nov–16 Nov).

Weekly flight availability from Denver to San Diego

The most flights from DEN to SAN are scheduled on a Friday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

How often are flights from Denver to San Diego delayed?

About 21% 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?

Tuesday 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 15% 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?

What are the cheapest flights 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?

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.

Complete your trip

Complete your trip to San Diego by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to California

Book a non-stop flight to one of these other cities located in California.

Search flights from Denver to San Diego by cabin class

Find flights from Denver to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Denver and San Diego flights

Browse other Denver and San Diego flight options. Last updated on 11 October 2026.

Other flights from Denver

Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on 11 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to San Diego

Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 11 October 2026.

Fly with Cheapflights

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?

100% Free

Book with Flexibility

Travel Smart

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 11 October 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 11 October 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 11 October 2026.

Last-minute flights from Denver to San Diego
Discover last-minute flight deals from Denver to San Diego. Data last updated 11 October 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 11 October 2026.

Denver to San Diego flights typically cost between £110 and £227 in November.
The cheapest return price found within the last 5 days was £100 on Frontier (13 Nov–16 Nov).