Cheap Flights From Denver Intl. (DEN) To San Diego Intl. (SAN)

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Cheapest Flights from Denver (DEN) to San Diego (SAN)

The cheapest flights to San Diego Intl. found within the past 7 days were CA $377 round trip and CA $171 one way. Prices and availability subject to change. Additional terms may apply.

Thu., Aug. 21 - Wed., Aug. 27
DEN
Denver
SAN
San Diego
CA $377 Roundtrip, found 5 days ago
CA $377
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu., Aug. 21 from Denver to San Diego, returning Wed., Aug. 27, priced at CA $377 found 5 days ago
Thu., Aug. 21 - Wed., Aug. 27
DEN
Denver
SAN
San Diego
CA $383 Roundtrip, found 5 days ago
CA $383
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu., Aug. 21 from Denver to San Diego, returning Wed., Aug. 27, priced at CA $383 found 5 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $393 Roundtrip, found 2 days ago
CA $393
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $393 found 2 days ago
Mon., Mar. 16 - Fri., Mar. 20
DEN
Denver
SAN
San Diego
CA $398 Roundtrip, found 5 days ago
CA $398
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon., Mar. 16 from Denver to San Diego, returning Fri., Mar. 20, priced at CA $398 found 5 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $400 Roundtrip, found 2 days ago
CA $400
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $400 found 2 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $403 Roundtrip, found 2 days ago
CA $403
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $403 found 2 days ago
Thu., Aug. 21 - Wed., Aug. 27
DEN
Denver
SAN
San Diego
CA $404 Roundtrip, found 5 days ago
CA $404
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu., Aug. 21 from Denver to San Diego, returning Wed., Aug. 27, priced at CA $404 found 5 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $434 Roundtrip, found 2 days ago
CA $434
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $434 found 2 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $447 Roundtrip, found 2 days ago
CA $447
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $447 found 2 days ago
Wed., Sep. 3 - Mon., Sep. 8
DEN
Denver
SAN
San Diego
CA $454 Roundtrip, found 2 days ago
CA $454
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed., Sep. 3 from Denver to San Diego, returning Mon., Sep. 8, priced at CA $454 found 2 days ago

Frequently asked questions

Are there direct flights from Denver Airport to San Diego Airport?
Sometimes, it's the journey that counts; other times, the magic is in the destination. But if you just want to get to where you're going fast, multiple airlines advertise direct flights from Denver Airport to San Diego Airport, including Southwest Airlines and United Airlines.
What airlines fly from Denver Airport to San Diego Airport?
You can take your pick from a few airlines with direct flights between Denver and San Diego County. Southwest Airlines (WN) is one of the most reliable. This carrier operates around 178 flights each month. If that's not enough for you, have a look at the deals on offer from United Airlines (UA). This carrier operates 152 flights every month. Between the two, you're sure to find the flight to suit your travel plans.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.