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Cheap Flights from Denver to San Diego starting at S$ 35

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Denver to San Diego

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.
Cheapest Airlines flying from Denver to San Diego

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From S$ 35
Southwest Airlines
From S$ 87
Delta Air Lines
From S$ 117
United Airlines
From S$ 125
American Airlines
From S$ 127
Alaska Airlines
From S$ 216
Sun Country Airlines
From S$ 228
ANA airlines

Find more flights and airlines

Alternative Routes from Denver to San Diego

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Denver to San Diego.

  • Cheapest
    Frontier Airlines
    DEN
    05:30
    2h 30m
    Direct
    SAN
    07:00
    Denver International Airport - San Diego International Airport
    Tue, Apr 23Frontier Airlines
    S$ 35
  • Frontier Airlines
    DEN
    05:30
    2h 30m
    Direct
    SAN
    07:00
    Denver International Airport - San Diego International Airport
    Tue, Apr 23Frontier Airlines
    S$ 35
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from Denver (DEN) to San Diego (SAN) the cheapest?

    Airlines adjust prices for flights from Denver to San Diego based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much is a flight from Denver (DEN) to San Diego (SAN) cost?

    According to Trip.com's data, the lowest price is around S$ 361.
  • How long is a flight from Denver (DEN) to San Diego (SAN)?

    It takes about 3 hours 15 minutes to fly from Denver (DEN) to San Diego (SAN).
  • What is the transportation method from the main airport to downtown in San Diego?

    • The distance from San Diego International Airport to downtown is about 3km, by taxi about 20 minutes.
  • What are the most popular airlines that fly from Denver (DEN) to San Diego (SAN)?

    Airlines with flights from Denver (DEN) to San Diego (SAN): Southwest Airlines, Volaris and United Airlines.
  • What's the most popular airline for direct flights from Denver (DEN) to San Diego (SAN)?

    Frontier Airlines operates 1 direct flights from Denver (DEN) to San Diego (SAN).
  • How many airports in San Diego?

Find cheapest flight ticket from Denver to San Diego

Cheapest direct flight price

S$ 34

Cheapest return ticket price

S$ 65

Cheapest month

January

Peak season for travel

September