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Cheap flights from Denver to San Diego from C$ 111

DEN — SAN
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags
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 Wednesday or Monday and return on a Thursday

Cheap flight deals from Denver to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Denver to San Diego

Thu 19/116:10 a.m. -
Nonstop2h 30m
Mon 23/118:00 p.m. -
Nonstop2h 25m
Deal found 23/10C$ 185
Fri 4/123:45 p.m. -
1 stop4h 10m
Sun 6/1212:15 p.m. -
1 stop3h 50m
Deal found 23/10C$ 209
Fri 4/121:54 p.m. -
Nonstop2h 31m
Fri 4/126:01 p.m. -
Nonstop2h 38m
Deal found 25/10C$ 213
Thu 10/123:45 p.m. -
1 stop4h 10m
Sun 13/128:30 a.m. -
1 stop3h 55m
Deal found 23/10C$ 215
Thu 19/113:45 p.m. -
Nonstop2h 30m
Sun 22/116:45 a.m. -
Nonstop2h 34m
Deal found 27/10C$ 220
Sat 21/1110:50 p.m. -
1 stop10h 05m
Fri 27/116:30 a.m. -
Nonstop2h 34m
Deal found 23/10C$ 223
Tue 17/113:45 p.m. -
1 stop4h 10m
Sat 21/119:15 p.m. -
Nonstop2h 25m
Deal found 24/10C$ 229
Thu 19/116:05 p.m. -
1 stop5h 00m
Sun 22/118:00 p.m. -
Nonstop2h 25m
Deal found 27/10C$ 234
Thu 17/128:35 a.m. -
1 stop3h 50m
Sun 20/128:00 a.m. -
1 stop4h 10m
Deal found 25/10C$ 241
Wed 9/128:50 a.m. -
2 stops5h 10m
Fri 11/122:10 p.m. -
1 stop3h 50m
Deal found 24/10C$ 243
Sat 21/115:26 a.m. -
1 stop7h 49m
Fri 27/114:30 p.m. -
1 stop5h 29m
Deal found 23/10C$ 248

Find flight deals from Denver to San Diego

Round-trip from

C$ 185

One-way from

C$ 111

Popular in

June

Cheapest in

February

Average price

C$ 318
Southwest
  • Southwest
  • 19/11-23/11
  • Nonstop
  • 4h 55m total
  • Denver to San Diego
Search Deals
Southwest
  • Southwest
  • 16/11-31/12
  • Nonstop
  • 2h 20m total
  • Denver to San Diego
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Mon 16/11

8:50 a.m.-10:10 a.m.

Nonstop2h 20m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 111

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Thu 26/11

9:05 a.m.-1:55 p.m.

1 stop5h 50m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 125

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Tue 8/12

8:50 a.m.-1:00 p.m.

2 stops5h 10m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 125

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sun 8/11

8:30 a.m.-12:15 p.m.

1 stop4h 45m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 160

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Fri 13/11

4:55 p.m.-7:55 p.m.

1 stop4h 00m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 160

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Sat 14/11

7:19 p.m.-10:59 p.m.

1 stop4h 40m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 167

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Thu 12/11

1:25 p.m.-6:37 p.m.

1 stop6h 12m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 167

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Thu 12/11

10:45 a.m.-4:18 p.m.

1 stop6h 33m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 167

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Mon 22/3

7:50 a.m.-11:33 a.m.

1 stop4h 43m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 167

DenverSan Diego

DEN Denver Intl - SAN San Diego

DENSAN

Denver Intl

Tue 10/11

10:45 a.m.-4:18 p.m.

1 stop6h 33m

San Diego

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 167

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 21 resultsSorted by cheapest first
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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.
Estimated round-trip price

Cheapflights Insights

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?

To ensure you get the cheapest price possible for a flight from Denver to San Diego, you should look to book at least 82 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 C$ 171). Flying from Denver to San Diego in June is currently the most expensive (average of C$ 375). 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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to San Diego as you normally would.

How much does it cost to fly round-trip from Denver to San Diego?

Airfare is below average for this route at the moment.

Denver to San Diego flights typically cost between C$ 233 and C$ 449 in November.
The cheapest round-trip price found within the last 5 days was C$ 185 on Southwest (19 Nov-23 Nov).

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.
Frontier
5.5
Fair
2,515 reviews
Check prices

Entertainment

4.2

Food

4.5

Boarding

5.8

Crew

6.5

Overall

5.5

Comfort

5.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2024

DEN - PDX

Horrific. Boarding sucked and was not ADA friendly Our flight was delayed 2 times. One of the delays was because a flight attendant was late to work. I booked a window seat- and my seat didn’t even come with a window. The crew members were in the back talking about how poorly they were treated at their job, and that most of them were staying because they had to, and couldn’t afford a career change. Overall one of the worst flights I’ve ever had, I feel bad for the employees and will never book with frontier again- not because of my poor experience- I don’t want to contribute funds to an organization that treats their workers unfairly.
Frontier
5.5
Fair
2,515 reviews
Frontier
5.5
Fair
2,515 reviews
Check prices

Entertainment

4.2

Food

4.5

Boarding

5.8

Crew

6.5

Overall

5.5

Comfort

5.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Apr 2024

DEN - PDX

Horrific. Boarding sucked and was not ADA friendly Our flight was delayed 2 times. One of the delays was because a flight attendant was late to work. I booked a window seat- and my seat didn’t even come with a window. The crew members were in the back talking about how poorly they were treated at their job, and that most of them were staying because they had to, and couldn’t afford a career change. Overall one of the worst flights I’ve ever had, I feel bad for the employees and will never book with frontier again- not because of my poor experience- I don’t want to contribute funds to an organization that treats their workers unfairly.

Related info for your journey

  • How popular is this Denver to San Diego flight route?

    Within the past month, 3 users have taken a look at flights from Denver Intl to San Diego.

  • How long is the flight from Denver to San Diego?

    Airlines like Southwest and United Airlines fly from Denver to San Diego in about 2h 30m. The time it takes to get you to your destination is usually consistent. The distance between Denver and San Diego is about 1371 km. Most flights are nonstop.

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

    Currently priced at C$ 39, Frontier will fly you from Denver to San Diego and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Frontier is priced at 86% lower than the current average price of a flight leaving 3 months from now.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to San Diego on time: Frontier (70%), Volaris (64%), Air Canada (64%).

  • 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 vacation 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 C$ 171). Flying from Denver to San Diego in June is currently the most expensive (average of C$ 375). 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

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Denver to San Diego

Denver to Los Angeles flights

Top airline flying from Denver to San Diego

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 39AverageC$ 250FlexibilityNo cancel feeOn-time62%
Search Frontier flights

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