75 € Cheap Flights from Denver International to San Diego

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Flight deals from Denver International to San Diego

Looking for a cheap last-minute deal or the best return flight from Denver International Airport to San Diego? If you want to travel next month, return fares start from 152 €. Find the lowest prices on one-way and return tickets right here.

San Diego.75 € per passenger.Departing Wed, 9 Sep, returning Wed, 16 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 9 Sep, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Wed, 16 Sep, arriving in Denver International.Price includes taxes and charges.From 75 €, select.

San Diego.75 € per passenger.Departing Wed, 19 Aug, returning Wed, 26 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 19 Aug, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Wed, 26 Aug, arriving in Denver International.Price includes taxes and charges.From 75 €, select.

San Diego.87 € per passenger.Departing Wed, 21 Oct, returning Sun, 25 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 21 Oct, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Sun, 25 Oct, arriving in Denver International.Price includes taxes and charges.From 87 €, select.

San Diego.87 € per passenger.Departing Sat, 26 Sep, returning Thu, 1 Oct.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Sat, 26 Sep, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Thu, 1 Oct, arriving in Denver International.Price includes taxes and charges.From 87 €, select.

San Diego.93 € per passenger.Departing Mon, 31 Aug, returning Mon, 7 Sep.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Mon, 31 Aug, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Mon, 7 Sep, arriving in Denver International.Price includes taxes and charges.From 93 €, select.

San Diego.93 € per passenger.Departing Thu, 30 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Thu, 30 Jul, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Wed, 5 Aug, arriving in Denver International.Price includes taxes and charges.From 93 €, select.

San Diego.96 € per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Thu, 5 Nov, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Mon, 9 Nov, arriving in Denver International.Price includes taxes and charges.From 96 €, select.

San Diego.140 € per passenger.Departing Thu, 15 Oct, returning Thu, 5 Nov.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Thu, 15 Oct, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Thu, 5 Nov, arriving in Denver International.Price includes taxes and charges.From 140 €, select.

San Diego.152 € per passenger.Departing Fri, 3 Jul, returning Mon, 6 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 3 Jul, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Mon, 6 Jul, arriving in Denver International.Price includes taxes and charges.From 152 €, select.

San Diego.152 € per passenger.Departing Fri, 26 Jun, returning Sat, 4 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Fri, 26 Jun, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Sat, 4 Jul, arriving in Denver International.Price includes taxes and charges.From 152 €, select.

San Diego.153 € per passenger.Departing Mon, 22 Jun, returning Wed, 24 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Mon, 22 Jun, arriving in San Diego International.Inbound direct flight with Frontier Airlines departs from San Diego International on Wed, 24 Jun, arriving in Denver International.Price includes taxes and charges.From 153 €, select.

San Diego.229 € per passenger.Departing Sun, 21 Feb, returning Fri, 26 Feb.Return flight with United.Outbound direct flight with United departs from Denver International on Sun, 21 Feb, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Fri, 26 Feb, arriving in Denver International.Price includes taxes and charges.From 229 €, select.

San Diego.229 € per passenger.Departing Tue, 5 Jan, returning Tue, 19 Jan.Return flight with United.Outbound direct flight with United departs from Denver International on Tue, 5 Jan, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Tue, 19 Jan, arriving in Denver International.Price includes taxes and charges.From 229 €, select.

San Diego.229 € per passenger.Departing Fri, 27 Nov, returning Sun, 6 Dec.Return flight with United.Outbound direct flight with United departs from Denver International on Fri, 27 Nov, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Sun, 6 Dec, arriving in Denver International.Price includes taxes and charges.From 229 €, select.

San Diego.230 € per passenger.Departing Tue, 29 Dec, returning Tue, 12 Jan.Return flight with United.Outbound direct flight with United departs from Denver International on Tue, 29 Dec, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Tue, 12 Jan, arriving in Denver International.Price includes taxes and charges.From 230 €, select.

San Diego.230 € per passenger.Departing Tue, 8 Dec, returning Sat, 12 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Denver International on Tue, 8 Dec, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Sat, 12 Dec, arriving in Denver International.Price includes taxes and charges.From 230 €, select.

Find the cheapest month to fly from Denver International to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to San Diego flights are currently cheapest in August.

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Direct flights from Denver International to San Diego

Alternative Denver International to San Diego routes

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

San Diego International

4km from central San Diego

ClosestCheapest

from 75 €

Search flights

McClellan-Palomar

48km from central San Diego

from 210 €

Search flights

Denver to San Diego: Flight information

The things to know before you go.

Cheapest flight found	75 €
Cheapest month to fly	September
Average flight time	2 hrs, 30 mins
Most popular airline	Southwest Airlines
Average flights per week	246

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

How many airports are there in San Diego?

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.

How much are return flights from Denver International to San Diego?

The best price we found for a return flight from Denver International to San Diego is 75 €. 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.

How long does it take to fly from Denver International to San Diego?

2 hours and 29 minutes is the average flight time from Denver International to San Diego.

Which airlines fly direct from Denver International to San Diego?

Southwest Airlines, Alaska Airlines and SkyWest Airlines fly direct from Denver International to San Diego.

How many flights are there a week from Denver International to San Diego?

As of June 2026, there are 246 flights per week flying from Denver International to San Diego.

When is the cheapest time to fly from Denver International to San Diego?

The cheapest month to fly from Denver International to San Diego is usually September.

Which is the cheapest airport to fly into in San Diego?

If you're flying from Denver International Airport, 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 75 €.

Which upcoming date is cheapest to fly from Denver International Airport to San Diego on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to San Diego on Wednesday, 9 September 2026.

Can I get a direct flight from Denver International Airport to San Diego?

Yes – the average flight time is 2 hours and 29 minutes.

How can I get the best flight deal from Denver International Airport to San Diego?

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.

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

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.

What’s the weather like in San Diego?

In June, the average temperature is usually around 19°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.

Which is the cheapest airline to fly from Denver International Airport to San Diego with?

Currently, Frontier Airlines offers the cheapest flight tickets to San Diego.

Flying from Denver International Airport (DEN) to San Diego: what you need to know

The average length of a direct flight from Denver International Airport to San Diego is 2 hours 25 minutes.
San Diego is one hour behind Denver, where Denver International Airport is located. San Diego observes the UTC-8 timezone.
Denver International Airport (DEN) to San Diego International Airport (SAN) is the most popular route. When booking your flight, you can pick from 97 services each week between DEN and SAN.
For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your DEN to San Diego flight.
During popular months like July, it's wise to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for an international flight when you fly during a peak period in general.
You can book a direct Denver International Airport to San Diego ticket. Begin your journey at DEN and touch down at San Diego International Airport (SAN).
Popular airlines that operate direct flights from Denver International Airport to San Diego include:
DEN is about 31 kilometres from central Denver. If you're driving, catching a taxi or ride-sharing from the centre, it'll take 35 minutes or so to get there, depending on traffic. If you're taking public transport, expect the journey time to be around 35 minutes.
Get your flight from Denver International Airport to San Diego off to an easy start. Only a quick drive from DEN, stay at The Westin Denver International Airport and you'll be well-rested for the journey ahead.
Denver International Airport scores top marks for on-time performance. 80% of flights that take off from DEN reach their destination on time.
You'll find DEN at 8500 Pena Boulevard.

How to find the cheapest flights from Denver International Airport (DEN) to San Diego

The lowest price we've seen for a one-way Denver International Airport to San Diego flight is 38 €. The cheapest price for a return flight is 75 €. Bear in mind fares may change due to demand at the time of booking.
Don't wait until the last moment. You're more likely to land cheap flights from DEN to San Diego if you book in advance. Airlines often have some great early bird deals.
If you're willing to be flexible with your travel plans, use the 'Whole month' tool. It'll give you the cheapest price across each month when looking for a Denver International Airport to San Diego ticket.
Snapping up a cheap flight from DEN to San Diego couldn't be easier with Price Alerts. Simply create one of these automatic notifications and we'll let you know as soon as a lower fare pops up.
Select your preferred departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Denver International Airport to San Diego by 'Best,' 'Fastest' or 'Cheapest.'

Airports in San Diego

San Diego International Airport (SAN)

The distance from San Diego International Airport (SAN) to central San Diego is roughly 5 kilometres. It'll take you around 15 minutes to reach the centre driving.
Travelling to the centre by public transport takes about 25 minutes.
Think about booking a hotel close to SAN if you're coming in on a late flight from Denver International Airport to San Diego. Pick one of these accommodation options and make your first night all about catching up on rest:
Lock in the lowest price by reserving your ride from San Diego International Airport around two weeks in advance of your flight from DEN to San Diego.
The address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

If you're staying in central San Diego (or just want to start sightseeing straight away), the city is around 48 kilometres from McClellan-Palomar Airport (CLD). Look for any information kiosks to help direct you after hopping off your flight from Denver International Airport to San Diego.
After stepping off your DEN to San Diego flight, kick back at a hotel close to CLD. These are some great options that'll help you slip into relaxation mode:
Generally speaking, the earlier you book, the better the deals and choice of vehicles. Lock in your ride from CLD once your travel dates are set.

Best time to go to San Diego

It's time to plan your trip dates for your flight from Denver International Airport to San Diego. July is the busiest month to travel to San Diego. If you want a more relaxed atmosphere, go in December.
Book a Denver International Airport to San Diego plane ticket with a departure in August if you want to experience the city during its warmest month. Expect temperatures to range from 16ºC (61ºF) to 27ºC (81ºF).
If you want cooler conditions, look for a cheap ticket from DEN to San Diego in February when temperatures average between 8ºC (46ºF) and 22ºC (72ºF).

More about San Diego

After booking your flight from Denver International Airport to San Diego, find a hotel that offers both comfort and a great location. Make one of these accommodation options your base for exploring San Diego:
There are so many things to see and do in this city it can be difficult to know where to start. San Diego Balboa Park, San Diego Zoo and USS Midway Museum are major attractions which should be on any well-planned San Diego itinerary.

Explore more of the United States

You've visited San Diego, now it's time to explore other parts of the United States. Journey about 177 kilometres northwest to Los Angeles to check off its top sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, your itinerary will be busy.
Phoenix is another favourite destination in the United States and is around 483 kilometres east of San Diego. No journey is complete without dropping by Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.