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

DEN — SAN
Feb 7 — Feb 141

The best prices from Denver Intl to San Diego are usually found in January or February, booked 40 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

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 2023: compare Denver to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.

DEN - SAN

Price

$130 - $288

SAN

Temperature

57.2 - 71.6 °F

SAN

Rainfall

0 - 2.3 inches

Popular inJuneHigh demand for flights, 22% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 42% potential price drop
Round-trip from$130From Denver Intl to San Diego
One-way from$66One-way flight from Denver Intl to San Diego

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

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 25% when planning your travel around this day of the week.

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 38 days in advance, which can save you up to 23% on flights from Denver to San Diego compared to booking the week you need them. Waiting 38 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 $230. For sooner than that we have options available in the next 3 days from $280.

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

January is one of the best times of the year to fly to San Diego from Denver. Prices for January average $226 per person but you can even find prices for as low as $79. The most expensive prices can be found in the month of June. Opting for a January flight can save you 27% on your journey compared to booking in June

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 evening, which can drop the price by up to 20% versus a flight at noon.

Cheap flights from Denver to San Diego in February, March 2023

The best prices found for DEN to SAN flights for February, March
Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$40

Frontier

Pick Dates

Deal found 1/30

Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$48

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 29m
$50

Frontier

Pick Dates

Deal found 1/30

Denver to San Diego 2023 flight deals

Cheap flights to San Diego from Denver found for this year
Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$40

Frontier

Pick Dates

Deal found 1/30

Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$48

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 29m
$50

Frontier

Pick Dates

Deal found 1/30

Cheap Frontier flights from Denver to San Diego

Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$40

Frontier

Pick Dates

Deal found 1/30

Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$48

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 29m
$50

Frontier

Pick Dates

Deal found 1/30

  • One of the most popular airlines traveling from Denver to San Diego is Frontier. Flights from Frontier traveling this route typically cost $329.20 RT. This price is typically 12% cheaper than other airlines that offer Denver to San Diego flights. When booking this route, the cheapest RT price found was $147. Denver Intl Airport is the most common Denver airport to take off from when flying to San Diego. San Diego Airport is the most popular arrival airport in San Diego. When flying from Denver to San Diego, Frontier flights are 23% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Denver to San Diego

Feb 28 - Mar 1
DEN

Denver Intl

SAN

San Diego

1 stop

10h 01m
SAN

San Diego

DEN

Denver Intl

1 stop

4h 13m
$68

Spirit Airlines

Pick Dates

Deal found 1/31

Feb 28 - Mar 1
DEN

Denver Intl

SAN

San Diego

1 stop

7h 51m
SAN

San Diego

DEN

Denver Intl

1 stop

4h 13m
$71

Spirit Airlines

Pick Dates

Deal found 2/2

Mar 1 - Mar 6
DEN

Denver Intl

SAN

San Diego

1 stop

12h 56m
SAN

San Diego

DEN

Denver Intl

1 stop

13h 27m
$82

Spirit Airlines

Pick Dates

Deal found 1/30

  • If you’re traveling from Denver to San Diego, one of the more common airlines traveling that route is Spirit Airlines. Denver to San Diego flights are typically 21% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $323.96 RT. The cheapest Spirit Airlines flight found for this route was $101. When traveling from Denver to San Diego on Spirit Airlines, the most popular airport to depart from is Denver Intl Airport and the most popular airport to arrive at is San Diego Airport. When flying from Denver to San Diego, Spirit Airlines flights are 21% more popular than any other airline flying that same route.

Non-stop flights to San Diego from Denver

Save time with Denver to San Diego direct flight deals
Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$40

Frontier

Pick Dates

Deal found 1/30

Feb 28 - Mar 7
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$48

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 29m
$50

Frontier

Pick Dates

Deal found 1/30

Last minute flights from Denver to San Diego

Late deals on return flights to San Diego from Denver, departing today and this week
Feb 12 - Feb 14
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$75

Frontier

Pick Dates

Deal found 1/30

Feb 10 - Feb 14
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 28m
$83

Frontier

Pick Dates

Deal found 1/30

Feb 10 - Feb 14
DEN

Denver Intl

SAN

San Diego

1 stop

10h 01m
SAN

San Diego

DEN

Denver Intl

Nonstop

2h 34m
$84

Multiple Airlines

Pick Dates

Deal found 1/31

One-way flights to San Diego from Denver

The cheapest one-way flights from Denver to San Diego
Feb 25
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
$31

Frontier

Pick Dates

Deal found 1/30

Feb 28
DEN

Denver Intl

SAN

San Diego

Nonstop

2h 30m
$34

Frontier

Pick Dates

Deal found 2/1

Mar 29
DEN

Denver Intl

SAN

San Diego

1 stop

5h 43m
$35

Spirit Airlines

Pick Dates

Deal found 2/2

Reviews of Airlines Servicing San Diego

Spirit Airlines
6.9
Okay
716 reviews

Entertainment

5.6

Food

5.6

Crew

7.4

Comfort

6.4

Overall

6.9

Boarding

7.2

Reviews

1 / 10

I had entered my TSA number, confirmed with the telephone representative that it was on the ticket, and it did not print on my ticket. I had to go through the security line twice. I was charged $74 to check in a bag, and $60 for a carry-on. For round-trip, this adds $260 above the cost of the ticket. For a 1.5 hour flight. I will never fly Spirit Airlines again.

Spirit Airlines
6.9
Okay
716 reviews
Spirit Airlines
6.9
Okay
716 reviews

Entertainment

5.6

Food

5.6

Crew

7.4

Comfort

6.4

Overall

6.9

Boarding

7.2

Reviews

1 / 10

I had entered my TSA number, confirmed with the telephone representative that it was on the ticket, and it did not print on my ticket. I had to go through the security line twice. I was charged $74 to check in a bag, and $60 for a carry-on. For round-trip, this adds $260 above the cost of the ticket. For a 1.5 hour flight. I will never fly Spirit Airlines again.

Frontier
6.1
Okay
537 reviews
Spirit Airlines
6.9
Okay
716 reviews

Entertainment

5.6

Food

5.6

Crew

7.4

Comfort

6.4

Overall

6.9

Boarding

7.2

Reviews

1 / 10

I had entered my TSA number, confirmed with the telephone representative that it was on the ticket, and it did not print on my ticket. I had to go through the security line twice. I was charged $74 to check in a bag, and $60 for a carry-on. For round-trip, this adds $260 above the cost of the ticket. For a 1.5 hour flight. I will never fly Spirit Airlines again.

Related info for your journey

Useful info, stats and facts about Denver to San Diego flights.

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 17 daily flights to San Diego from 10 different airlines. 2h 22m 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 Frontier, United Airlines, 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 Frontier for just $40, but on average you can expect to pay $63.

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 $68.

Are there last-minute flights available from Denver to San Diego for under $100?

There are currently 20+ open flights from Denver to San Diego within the next 7 days for less than $100.

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

Nonstop flights can be found on the following days: Friday, Saturday.

How popular is this Denver to San Diego flight route?

Within the past month, 156 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 4 flights from Denver to San Diego on average per day.
Afternoon (Noon - 6pm) - 100% of flight departures

How long is the flight from Denver to San Diego?

For as low as $40, Frontier can have you in San Diego from Denver in 2h 30m. 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 ($40), and Spirit Airlines ($68) offers the cheapest pricing from Denver to San Diego. Frontier is 82% cheaper than the average price of flights available within the next 90 days to this destination.

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: Undisclosed Carrier, American Airlines or Alaska Airlines.

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 SkyWest Airlines (100%), United Airlines (81%) and Air Canada (74%).

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 $807, our data indicates the cheapest price to be $29. The most popular route (Denver Intl - San Diego), is priced around $55.

Alternative routes for Denver to San Diego

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

Top 6 airlines flying from Denver 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.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$15Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$67Average$120FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
FrontierCheapest$77Average$205FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
DeltaCheapest$99Average$306FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$147Average$329FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$210Average$339FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Denver to San Diego

See what time of day planes typically take off from Denver to San Diego
3%of flight departuresEarly morningMidnight to 6 am
44%of flight departuresMorning6 am to noon
26%of flight departuresAfternoonNoon to 6 pm
27%of flight departuresEvening6 pm to midnight
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
Sunday8daily flights
Monday22daily flights
Tuesday20daily flights
Wednesday20daily flights
Thursday21daily flights
Friday19daily flights
Saturday10daily flights
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