Cheap flights from San Diego to Denver

San Diego
SAN
Denver
DEN

Flight deals from San Diego to Denver

Below you can see the best deals on flights San Diego — Denver 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 5 September, from $46.

Top 10 cheap flights from San Diego to Denver

F9
$ 46

San Diego — Denver

15:45—19:20
5 Sep 2026
2 h 35 m
Direct flight
F9
$ 46

San Diego — Denver

06:25—10:03
5 Sep 2026
2 h 38 m
Direct flight
F9
$ 46

San Diego — Denver

16:54—20:22
15 Sep 2026
2 h 28 m
Direct flight
F9
$ 46

San Diego — Denver

06:25—09:59
15 Sep 2026
2 h 34 m
Direct flight
F9
$ 46

San Diego — Denver

16:54—20:22
12 Sep 2026
2 h 28 m
Direct flight
F9
$ 46

San Diego — Denver

06:25—09:59
12 Sep 2026
2 h 34 m
Direct flight
F9
$ 62

San Diego — Denver

16:54—20:22
9 Sep 2026
2 h 28 m
Direct flight
F9
$ 62

San Diego — Denver

06:25—09:59
9 Sep 2026
2 h 34 m
Direct flight
F9
F9
$ 66

San Diego — Denver

19:04—09:43
11 Sep 2026
13 h 39 m
1 stop
F9
F9
$ 66

San Diego — Denver

19:04—12:11
11 Sep 2026
16 h 7 m
1 stop

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

About the San Diego — Denver flight

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

The route has direct flights — around 279 flights per week, flights are operated by United Airlines, Alaska Airlines, Hawaiian Airlines, Southwest 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 Denver travel guide, how to get from the airport into town and Denver 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 $46Min. price
SeptemberCheapest
AugustPeak season
YesDirect flights
1,341 kmDistance
2 h 22 minTravel time
5Airlines
279 / wkFlights

Flight schedule from San Diego to Denver

The table shows direct flights from San Diego to Denver on the selected date. The flight takes approximately 2 h 22 min. Regular flights are operated by United Airlines, Alaska Airlines, Hawaiian Airlines and Southwest Airlines. Departures from San Diego International Airport airports, arrivals at Denver International Airport and Centennial 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: 16 Aug 2026

Flight ticket prices by day: San Diego — Denver

Below is a calendar of the lowest flight ticket prices for San Diego — Denver by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $46 in September, and the most expensive are around $149 in August. 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 San Diego to Denver by month. Tickets are usually cheapest in February (around $111) and priciest in June (about $155) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$113lowMay$133mediumSep$131medium
Feb$111lowJun$155highOct$122low
Mar$125mediumJul$153highNov$137medium
Apr$129mediumAug$141mediumDec$149high

Some values are estimated based on seasonality.

When to fly

Weather in Denver: it is warmest in July (up to 31 °C on average) and coolest in January (around 6 °C). The driest month is November.

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

Temperature · Denver

Dry and wet days · Denver

Wind speed and direction · Denver

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

  • Book ahead: fares for San Diego — Denver 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.
  • The cheapest month to fly to Denver 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 San Diego — Denver route are operated by 5 airlines; United Airlines runs the most flights (around 32% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    30x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight SAN → DEN20x/week
      Duration
      2h 32m
      Days
      MTWTFSS
    • Direct flight CLD → DEN9x/week
      Duration
      2h 26m
      Days
      MTWTFSS
    31.9%Open →
  • Alaska AirlinesAS
    22x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight SAN → DEN22x/week
      Duration
      2h 27m
      Days
      MTWTFSS
    23.7%Open →
  • Hawaiian AirlinesHA
    20x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight SAN → DEN20x/week
    21.5%
  • Southwest AirlinesWN
    12x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight SAN → DEN12x/week
      Duration
      3h 5m
      Days
      MTWTFSS
    12.9%Open →
  • Frontier AirlinesF9
    9x/week
    WebsiteFleet: 15329M pax/year
    • Direct flight SAN → DEN9x/week
      Duration
      2h 37m
      Days
      MTWTFSS
    10.0%Open →

Cities and airports on the San Diego — Denver route

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

Departure

San Diego

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

Denver

DEN
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 San Diego — Denver flight

How long is the flight from San Diego to Denver?

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

How far is it from San Diego to Denver?

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

Are there direct flights from San Diego to Denver?

Yes, there are nonstop flights San Diego — Denver — around 279 flights per week.

Which airlines fly from San Diego to Denver?

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

Which airports do San Diego — Denver flights use?

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

How much is a ticket from San Diego to Denver?

The price of a San Diego — Denver ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in August. Tickets typically cost between $46 and $149. Check the current lowest fare and low-price calendar on this page.

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

Flights San Diego — Denver 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 San Diego to Denver?

To catch a low fare San Diego — Denver, 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 San Diego

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

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

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