Cheap flights from Denver to San Diego (DEN - SAN)

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The best prices from Denver Intl to San Diego are usually found in August or January, booked 15 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

How to find the cheapest flight from
Denver (DEN) to San Diego (SAN)

All the information you need to plan the best DEN to SAN flight in 2021: compare Denver to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.
DEN - SAN
Price
$136 - $233
SAN
Temperature
57.2 - 71.6 °F
SAN
Precipitation
0 - 2.3 inches

Popular in

December

High demand for flights, 23% potential price rise

Cheapest in

August

Best time to find cheap flights, 25% potential price drop

Round-trip from

$136

From Denver Intl to San Diego

One-way from

$73

One-way flight from Denver Intl to San Diego

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Denver to San Diego?

August is one of the best times of the year to fly to San Diego from Denver. Prices for August average $180 per person but you can even find prices for as low as $96. The most expensive prices can be found in the month of December. Opting for a August flight can save you 29% on your journey compared to booking in August

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 29% when planning your travel around this day of the week.

When is the cheapest time to fly from Denver to San Diego (DEN - SAN)?

When flying from Denver to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 23% versus a flight at noon.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 14 days in advance, which can save you up to 7% on flights from Denver to San Diego compared to booking the week you need them. Waiting 14 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $164. For sooner than that we have options available in the next 3 days from $186.

Cheap flights from Denver to San Diego in October, November 2021

The best prices found for DEN to SAN flights for October, November
15 Nov - 18 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
13 Nov - 17 Nov
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
10 Nov - 13 Nov
$93pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl

Denver Intl to San Diego 2021 flight deals

Cheap flights to San Diego from Denver found for this year
4 Dec - 11 Dec
$79pp
DEN
Denver Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
15 Nov - 18 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
8 Dec - 10 Dec
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl

Non-stop flights to San Diego from Denver

Save time with Denver to San Diego direct flight deals
15 Nov - 18 Nov
$83pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
8 Dec - 10 Dec
$84pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
2 Dec - 5 Dec
$88pp
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl

Last minute flights from Denver to San Diego

Late deals on round-trip flights to San Diego from Denver, departing today and this week
3 Nov - 5 Dec
$108pp
DEN
Denver Intl
Frontier
 
1 STOP
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
2 Nov - 6 Dec
$113pp
DEN
Denver Intl
Frontier
 
1 STOP
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
2 Nov - 9 Nov
$114pp
DEN
Denver Intl
Frontier
 
1 STOP
SAN
San Diego
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl

One-way flights to San Diego from Denver

The cheapest one-way flights from Denver to San Diego
8:29 am - 12:09 pm
United Airlines
1 Stop
4h 40m
DEN - SAN
United Airlines
$73
United
7:24 am - 1:03 pm
Delta
1 Stop
6h 39m
DEN - SAN
Delta
$76
Delta
6:58 am - 1:03 pm
Spirit Airlines
1 Stop
7h 05m
DEN - SAN
Spirit Airlines
$78
FlyFar

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Denver</span> to <span class="emphasized">San Diego</span> flights.

Flight FAQs

From Denver to San Diego

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

San Diego is the airport most travelers will use when flying to San Diego from Denver Intl. Booking flights from Denver Intl (DEN) to San Diego (SAN) should be relatively easy as there are 23 daily flights to San Diego from 7 different airlines. 2h 17m is how long a flight from Denver to San Diego will take if you book a nonstop flight.

Which airlines flying from Denver Intl to San Diego have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, Frontier, and Spirit Airlines flying from Denver Intl to San Diego have implemented new flexible cancellation policies.

Can I find flights from Denver to San Diego for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to San Diego for under $100. The cheapest flight booked recently is on Multiple Airlines for just $79, but on average you can expect to pay $96.

Are there nonstop flights from Denver to San Diego for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Denver to San Diego under $100. A good price for a nonstop flight from Denver to San Diego is less than $102.

Are there last-minute flights available from Denver to San Diego for under $200?

There are currently 20+ open flights from Denver to San Diego within the next 7 days for less than $200.

What days are nonstop flights available from Denver to San Diego?

Nonstop flights can be found on the following days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday.

How popular is this Denver to San Diego flight route?

Within the past month, 283 users have taken a look at flights from Denver Intl to San Diego.

How many flights depart from Denver to San Diego on average per day?

Travelers can expect 12 flights from Denver to San Diego on average per day.
Morning (6am - Noon) - 25% of flight departures
Afternoon (Noon - 6pm) - 33% of flight departures
Evening (6pm - Midnight) - 42% of flight departures

How long is the flight from Denver to San Diego?

For as low as $83, Frontier can have you in San Diego from Denver in 2h 24m. The distance from Denver to San Diego is about 856 mi. This flight may include one or multiple stops.

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

According to our current data, Frontier ($83), Spirit Airlines ($96), and United Airlines ($117) offers the cheapest pricing from Denver to San Diego. Frontier is 53% cheaper than the average price of flights available within the next 90 days to this destination.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $36. Spirit Airlines flights start at $45 while deals on United Airlines start at $59 one-way.

What are the cheapest flights from Denver to San Diego?

Looking for the cheapest flight from Denver to San Diego? While on average our users pay $396, our data indicates the cheapest price to be $58. The most popular route (Denver Intl - San Diego), is priced around $93.

What are the most popular airlines that fly from Denver to San Diego?

Before booking your flight from Denver to San Diego check out the most popular airlines for this route: Major Airline, American Airlines or Delta.

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

The top 3 most reliable airlines when flying from Denver to San Diego are United Airlines (84%), Air Canada (81%) and Frontier (81%).

COVID Restrictions

View COVID Travel Restrictions for San Diego, CA

Do I need a COVID test to fly to San Diego from Denver?

Information is based on travel restrictions for travel to San Diego within the United States

Most visitors from Denver Intl need to provide a negative COVID-19 test result and/or quarantine to enter San Diego.

COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Diego.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering San Diego.

Do I need a test to fly back to Denver from San Diego?

Returning to Denver Intl from San Diego

COVID-19 testing requirements
Visitors from San Diego must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.

Quarantine requirements
Visitors from San Diego are not required to quarantine after entering Denver Intl.

Hide COVID Travel Restrictions for San Diego, CA

Alternative routes for Denver to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Diego

Things to know before you go - useful duration and weather info for your trip from Denver to San Diego.
Flight duration from DEN to SAN
2h 29m
Average temperature for October in San Diego
77.0 °F
Avg rainfall for October in San Diego
0.6 ″

Airports servicing Denver

Airports servicing San Diego

Top 6 airlines flying from Denver Intl to San Diego

The chart below displays the airlines Cheapflights users traveling from Denver to San Diego choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
American Airlines
$57 $160 No cancel fee 71%
Spirit Airlines
$69 $166 No cancel fee 65%
Frontier
$77 $178 No cancel fee 62%
Delta
$82 $145 No cancel fee N/A
United Airlines
$97 $246 No cancel fee 69%
Southwest
$101 $324 No cancel fee 63%

Hourly flight availability from Denver to San Diego

See what time of day planes typically take off from Denver towards San Diego.
Morning 6 AM to noon 39% of DEN to SAN departures
Afternoon Noon to 6 PM 35% of DEN to SAN departures
Evening 6 PM to midnight 24% of DEN to SAN departures
Early morning Midnight to 6 AM 2% of DEN to SAN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Denver to San Diego
See how many times per day planes take to the skies headed from Denver to San Diego.
Sunday
23 daily flights
Monday
26 daily flights
Tuesday
20 daily flights
Wednesday
19 daily flights
Thursday
25 daily flights
Friday
26 daily flights
Saturday
23 daily flights
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