Cheap flights from Denver to San Diego

Denver
DEN
San Diego
SAN

Flight deals from Denver to San Diego

Below you can see the best deals on flights Denver — San Diego for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 28 September, from $39.

Top 10 cheap flights from Denver to San Diego

F9
$ 46

Denver — San Diego

22:29—23:51
5 Sep 2026
2 h 22 m
Direct flight
F9
$ 46

Denver — San Diego

07:40—09:05
5 Sep 2026
2 h 25 m
Direct flight
F9
$ 46

Denver — San Diego

22:29—23:51
12 Sep 2026
2 h 22 m
Direct flight
F9
$ 46

Denver — San Diego

14:28—15:58
12 Sep 2026
2 h 30 m
Direct flight
F9
$ 52

Denver — San Diego

22:29—23:51
31 Aug 2026
2 h 22 m
Direct flight
F9
$ 52

Denver — San Diego

07:40—09:05
31 Aug 2026
2 h 25 m
Direct flight
F9
$ 52

Denver — San Diego

22:29—23:51
2 Sep 2026
2 h 22 m
Direct flight
F9
$ 52

Denver — San Diego

07:40—09:05
2 Sep 2026
2 h 25 m
Direct flight
F9
$ 52

Denver — San Diego

22:29—23:51
9 Sep 2026
2 h 22 m
Direct flight
F9
$ 52

Denver — San Diego

14:29—15:59
9 Sep 2026
2 h 30 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Denver — San Diego flight

Looking for cheap flights from Denver to San Diego? Compare fares from different airlines, check the flight schedule and travel time — and book your Denver — San Diego ticket online at the best price.

The route has direct flights — around 276 flights per week, flights are operated by United Airlines, Hawaiian Airlines, Southwest Airlines, Alaska Airlines and 1 more airline, a nonstop flight takes about 2 h 22 min, the distance between the cities is around 1,341 km.

Planning your trip? You may find our San Diego travel guide, how to get from the airport into town and San Diego weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $39Min. price
SeptemberCheapest
MayPeak season
YesDirect flights
1,341 kmDistance
2 h 22 minTravel time
5Airlines
276 / wkFlights

Flight schedule from Denver to San Diego

The table shows direct flights from Denver to San Diego on the selected date. The flight takes approximately 2 h 22 min. Regular flights are operated by United Airlines, Hawaiian Airlines, Southwest Airlines and Alaska Airlines. Departures from Denver International Airport and Centennial Airport airports, arrivals at San Diego International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 15 Aug 2026

Flight ticket prices by day: Denver — San Diego

Below is a calendar of the lowest flight ticket prices for Denver — San Diego by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $39 in September, and the most expensive are around $131 in May. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Denver to San Diego by month. Tickets are usually cheapest in February (around $108) and priciest in July (about $188) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$114lowMay$125mediumSep$154medium
Feb$108lowJun$182highOct$131medium
Mar$160highJul$188highNov$165high
Apr$137mediumAug$171highDec$171high

Some values are estimated based on seasonality.

When to fly

Weather in San Diego: it is warmest in August (up to 26 °C on average) and coolest in March (around 17 °C). The driest month is July.

Tickets are usually cheapest in September and most expensive in May. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · San Diego

Dry and wet days · San Diego

Wind speed and direction · San Diego

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How to get the best deal on a Denver — San Diego ticket

  • Book ahead: fares for Denver — San Diego are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Denver is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to San Diego is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Denver — San Diego route are operated by 5 airlines; United Airlines runs the most flights (around 33% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    31x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight DEN → SAN21x/week
      Duration
      2h 25m
      Days
      MTWTFSS
    • Direct flight DEN → CLD9x/week
      Duration
      2h 30m
      Days
      MTWTFSS
    33.3%Open →
  • Hawaiian AirlinesHA
    20x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight DEN → SAN20x/week
    22.1%
  • Southwest AirlinesWN
    16x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight DEN → SAN16x/week
      Duration
      2h 50m
      Days
      MTWTFSS
    17.8%Open →
  • Alaska AirlinesAS
    15x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight DEN → SAN15x/week
      Duration
      2h 29m
      Days
      MTWTFSS
    16.7%Open →
  • Frontier AirlinesF9
    9x/week
    WebsiteFleet: 15329M pax/year
    • Direct flight DEN → SAN9x/week
      Duration
      2h 25m
      Days
      MTWTFSS
    10.1%Open →

Cities and airports on the Denver — San Diego route

Flights Denver — San Diego depart from Denver International Airport and Centennial Airport and arrive at San Diego International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Denver

DEN
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

San Diego

SAN
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Denver — San Diego flight

How long is the flight from Denver to San Diego?

A nonstop Denver — San Diego flight takes about 2 h 22 min — the distance between the cities is around 1,341 km.

How far is it from Denver to San Diego?

The distance from Denver to San Diego is about 1,341 km, which a nonstop flight covers in around 2 h 22 min.

Are there direct flights from Denver to San Diego?

Yes, there are nonstop flights Denver — San Diego — around 276 flights per week.

Which airlines fly from Denver to San Diego?

Airlines operating Denver — San Diego include United Airlines, Hawaiian Airlines, Southwest Airlines, Alaska Airlines, Frontier Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Denver — San Diego flights use?

Flights from Denver depart from Denver International Airport, Centennial Airport, and arrive at San Diego International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Denver to San Diego?

The price of a Denver — San Diego ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in May. Tickets typically cost between $39 and $131. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Denver — San Diego?

Flights Denver — San Diego are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Denver to San Diego?

To catch a low fare Denver — San Diego, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Denver

See all
Los AngelesSeattlePhoenixNew York CitySalt Lake CityDallasLas VegasMinneapolisChicagoHoustonAtlantaPortlandAustinColorado SpringsSan FranciscoWashington, D.C.OrlandoKansas CityNashvilleSanta AnaDetroitOklahoma CityAspenRapid CityMiamiPhiladelphiaSacramentoAlbuquerqueSt. LouisBostonWichitaSan JoseBoiseMidlandCharlotteGrand JunctionOmahaSan AntonioTulsaLincoln

Where else you can fly from San Diego

See all
San FranciscoSeattleLas VegasSan JosePhoenixChicagoSacramentoNew York CityDallasSalt Lake CityAtlantaFresnoLos AngelesPortlandBostonHonoluluOrlandoAustinSanta RosaWashington, D.C.OaklandVancouverSan Jose del CaboBoiseRedmondRenoMinneapolisCharlotteKahuluiSan Luis ObispoHoustonEugeneDetroitMiamiTorontoMontrealFort LauderdaleMontereyKailua-KonaTampa

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