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Cheap Flights from Denver to San Diego

Compare Denver to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Denver to San Diego

Looking for a cheap last-minute deal or the best return flight from Denver to San Diego? If you want to travel next month, return fares start from Rs15,373. Find the lowest prices on one-way and return tickets right here.
San Diego.Rs7,261 per passenger.Departing Wed, 22 Apr.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 22 Apr, arriving in San Diego International.Price includes taxes and charges.From Rs7,261, select.
San Diego.Rs7,728 per passenger.Departing Fri, 8 May.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 8 May, arriving in San Diego International.Price includes taxes and charges.From Rs7,728, select.
San Diego.Rs16,288 per passenger.Departing Tue, 16 Jun.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Tue, 16 Jun, arriving in San Diego International.Price includes taxes and charges.From Rs16,288, select.
San Diego.Rs17,766 per passenger.Departing Wed, 1 Jul.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 1 Jul, arriving in San Diego International.Price includes taxes and charges.From Rs17,766, select.
San Diego.Rs17,869 per passenger.Departing Fri, 27 Mar.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 27 Mar, arriving in San Diego International.Price includes taxes and charges.From Rs17,869, select.
San Diego.Rs23,897 per passenger.Departing Thu, 13 Aug.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Thu, 13 Aug, arriving in San Diego International.Price includes taxes and charges.From Rs23,897, select.
San Diego.Rs32,521 per passenger.Departing Fri, 2 Oct.One-way flight with United.Outbound direct flight with United departs from Denver International on Fri, 2 Oct, arriving in San Diego International.Price includes taxes and charges.From Rs32,521, select.
San Diego.Rs32,521 per passenger.Departing Thu, 17 Sep.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 17 Sep, arriving in San Diego International.Price includes taxes and charges.From Rs32,521, select.
San Diego.Rs32,877 per passenger.Departing Thu, 19 Nov.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 19 Nov, arriving in San Diego International.Price includes taxes and charges.From Rs32,877, select.

Find the cheapest month to fly from Denver to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to San Diego flights are currently cheapest in April.
Mar
from Rs17,869
Apr
from Rs7,261
May
from Rs7,728
Jun
from Rs16,288
Jul
from Rs17,766
Aug
from Rs23,897
Sep
from Rs32,521
Oct
from Rs32,521
Nov
from Rs32,877
Dec
Find prices
Jan
Find prices
Feb
Find prices

Direct flights from Denver to San Diego

Alternative Denver to San Diego routes

Looking for the cheapest, fastest or easiest route from Denver to San Diego? You could fly into the following airports instead.

San Diego International

4km from central San Diego
ClosestCheapest
from Rs7,261
Search flights

McClellan-Palomar

48km from central San Diego
from Rs67,543
Search flights

Denver to San Diego: Flight information

The things to know before you go.
Cheapest flight foundRs7,256
Cheapest month to flyApril
Average flight time2 hrs, 34 mins
Most popular airlineSouthwest Airlines
Average flights per week233

Finding cheap flights from Denver to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Denver to San Diego is Rs15,373. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 33 minutes is the average flight time from Denver to San Diego.
Southwest Airlines, Alaska Airlines and SkyWest Airlines fly direct from Denver to San Diego.
As of March 2026, there are 233 flights per week flying from Denver to San Diego.
The cheapest month to fly from Denver to San Diego is usually March.
If you're flying from Denver, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from Rs15,373.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to San Diego on Tuesday, 31 March 2026.
Yes – the average flight time is 2 hours and 33 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 14°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is Frontier Airlines .

Travelling from Denver to San Diego: what you need to know

  • Many great adventures take off from Denver's main airport, Denver International Airport (DEN). Explore the options for reserving a flight from Denver to San Diego leaving from this base.

  • San Diego International Airport (SAN) and McClellan-Palomar Airport (CLD) are the primary entry points to San Diego.

  • Around 2 hours 25 minutes is how long you'll be travelling on a direct Denver to San Diego flight.

  • San Diego is one hour behind Denver and observes the UTC-7 timezone.

  • Denver International Airport (DEN) to San Diego International Airport (SAN) is the most popular route between these two cities. There are 78 weekly flights to choose from. If you have things to do before leaving, the last flight from Denver to San Diego is with Frontier Airlines at 22:46. Opt for the first DEN to SAN departure with Southwest Airlines at 05:40 to maximise your time in San Diego.

  • To ensure you board your Denver to San Diego flight, leave plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the general rule to follow.

  • Travelling during a peak month like July? Public holidays and other popular seasons can mean longer lines and delays at check-in and security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

How to find the cheapest flights from Denver to San Diego

  • Rs7,261 is currently the best price for a one-way ticket from Denver to San Diego. Return flights start at Rs15,363. These prices may change depending on demand and availability.

  • Lock in cheap Denver to San Diego flights by booking two months ahead. Based on our research, that's the ideal time frame for picking up a bargain.

  • May is the best month for landing an amazing deal on a plane ticket from Denver to San Diego. If you want to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Save time looking for cheap flights from Denver to San Diego by creating a Price Alert. You'll get an email or push notification on the app when a lower fare pops up.

  • Tailor your flights using filters. Choose your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' Denver to San Diego flights.

Flying from Denver

Denver International Airport (DEN)

  • If you're searching for a direct flight from Denver to San Diego, you can depart from Denver International Airport (DEN). Get from DEN to San Diego International Airport (SAN) in one seamless journey.

  • Pick from a variety of airlines that offer direct Denver to San Diego plane tickets out of DEN. Let one of these carriers take you there:

  • DEN is about 31 kilometres from central Denver. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 35 minutes or so to get there, depending on the traffic. If you're using public transport, expect the travel time to be around 1 hour 30 minutes.

  • Get your flight from Denver to San Diego off to a hassle-free start. Just a quick ride from Denver International Airport, book a night at Baymont by Wyndham Denver International Airport and you'll be well-rested for the trip ahead.

  • 80.23% of flights leaving Denver International Airport arrive at their destination according to schedule. Given its impressive on-time stats, disruptions are unlikely when taking off from DEN.

  • DEN's address is 8500 Pena Boulevard.

Arriving in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) to central San Diego takes about 10 minutes to reach by car. The centre is roughly 5 kilometres away.

  • It usually takes 20 minutes to get there on public transport.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Denver to San Diego. Check in to one of these accommodation options near SAN instead:

  • Pick up a San Diego International Airport rental car and explore San Diego and beyond with your own set of wheels. Thrifty, Dollar and Budget are top outlets to choose from here.

  • For the lowest price, book your vehicle from San Diego International Airport about two weeks ahead of your Denver to San Diego flight.

  • SAN is situated at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • The centre of San Diego is approximately 48 kilometres from McClellan-Palomar Airport (CLD). As soon as your flight from Denver to San Diego has landed and you've made your way through the terminal, the drive should take about 40 minutes.

  • Public transport will get you there in approximately 2 hours 15 minutes.

  • No need to worry about public transport schedules or slow-moving cab lines. Grab a McClellan-Palomar Airport rental car and take your journey in whatever direction you like. Check out the availability and rates from Budget, Hertz and Avis.

  • Get the vehicle you actually want, not just whatever's left, by reserving your ride from CLD before your arrival. You can also avoid last-minute price surges, especially when demand is high.

Best time to go to San Diego

  • May is the quietest month for flights from Denver to San Diego, while July is the busiest. Pick the best time to go to San Diego based on whether you want a laid-back vibe or a lively atmosphere.

  • Before locking in your Denver to San Diego tickets, consider the kind of weather forecast you're hoping for. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.

  • February has average temperatures of between 7ºC and 23ºC. Look for cheap flights from Denver to San Diego around that time if you like travelling in cooler conditions.

More about San Diego

Explore more of United States

  • Los Angeles is just one of the many places in United States waiting to be explored once you've taken in the sights of San Diego. Around 177 kilometres to the north-west, its top attractions include Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If you're ready to explore another corner of United States, consider Phoenix, about 483 kilometres east of San Diego. Desert Botanical Garden, Heard Museum and Papago Park are among the biggest draws.

Plan the rest of your trip from Denver to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.