ASE - SAN

$170 Find Cheap Flights from Aspen to San Diego - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Aspen to San Diego departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Aspen to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Aspen to San Diego, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$329
Typical prices: $544-$478
United Airlines
Sat 7/11Tue 7/14
ASE - SAN • 1 stop
Cheapest one-way
$170
Delta
Tue 8/25
ASE - SAN • 1 stop
Top airlines
Cheapest • from $329 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Aspen and San Diego. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $349 (round-trip)
Shortest trip • 3h 51m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Aspen to San Diego (ASE-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Aspen to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Aspen to San Diego

Sat, Jul 11 - Tue, Jul 14
United Airlines Logo
7:15 pm - 12:31 am
ASE
-
SAN
6h 16m
1 stop
United Airlines Logo
1:39 pm - 7:55 pm
SAN
-
ASE
5h 16m
1 stop
$329United Airlines
Sat, Jul 11 - Tue, Jul 14
United Airlines Logo
5:10 pm - 11:54 pm
ASE
-
SAN
7h 44m
2 stops
United Airlines Logo
10:55 am - 4:08 pm
SAN
-
ASE
4h 13m
1 stop
$408United Airlines
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
8:30 am - 12:41 pm
ASE
-
SAN
5h 11m
1 stop
United Airlines Logo
6:30 am - 12:34 pm
SAN
-
ASE
5h 04m
1 stop
$409United Airlines
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
1:15 pm - 10:47 pm
ASE
-
SAN
10h 32m
2 stops
United Airlines Logo
4:07 pm - 9:29 pm
SAN
-
ASE
4h 22m
1 stop
$414United Airlines
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
11:25 am - 5:26 pm
ASE
-
SAN
7h 01m
2 stops
United Airlines Logo
2:24 pm - 9:29 pm
SAN
-
ASE
6h 05m
2 stops
$419United Airlines
Tue, Nov 3 - Wed, Nov 4
United Airlines Logo
11:00 am - 5:10 pm
ASE
-
SAN
7h 10m
1 stop
United Airlines Logo
11:20 am - 6:26 pm
SAN
-
ASE
6h 06m
1 stop
$439United Airlines
Tue, Nov 3 - Wed, Nov 4
United Airlines Logo
8:30 am - 6:35 pm
ASE
-
SAN
11h 05m
2 stops
United Airlines Logo
8:50 am - 2:21 pm
SAN
-
ASE
4h 31m
1 stop
$444United Airlines
Sat, Jul 11 - Tue, Jul 14
United Airlines Logo
3:25 pm - 11:54 pm
ASE
-
SAN
9h 29m
2 stops
United Airlines Logo
6:20 am - 7:55 pm
SAN
-
ASE
12h 35m
2 stops
$484United Airlines
Tue, Nov 24 - Sat, Nov 28
Delta Logo
12:00 pm - 3:20 pm
ASE
-
SAN
4h 20m
1 stop
Delta Logo
6:15 am - 2:00 pm
SAN
-
ASE
6h 45m
1 stop
$511Delta
Fri, Jul 17 - Mon, Jul 20
United Airlines Logo
5:10 pm - 11:54 pm
ASE
-
SAN
7h 44m
2 stops
United Airlines Logo
10:49 am - 7:55 pm
SAN
-
ASE
8h 06m
2 stops
$520United Airlines
Booking Insights

KAYAK's insights & trends for Aspen to San Diego flights

Get data-powered insights and trends into flights from Aspen to San Diego to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Aspen to San Diego?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Aspen to San Diego departing in July.

What is the cheapest month to fly from Aspen to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Aspen to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Aspen to San Diego is February, where tickets cost $333 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $756 and $564 respectively.

Good to know

Low seasonApril
Cheapest flight$170
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Aspen to San Diego

When to book flights from Aspen to San Diego

Are your dates flexible? Find out the best times to travel from Aspen to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Aspen to San Diego

  • What is the cheapest flight from Aspen to San Diego?

    In the last 5 days, the lowest price for a flight from Aspen to San Diego was $170 for a one-way ticket and $329 for a round-trip.

  • Do I need a passport to fly between Aspen and San Diego?

    No

  • Which aircraft models fly most regularly from Aspen to San Diego?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Aspen to San Diego?

    Star Alliance is the only airline alliance operating flights between Aspen and San Diego.

  • How does KAYAK find such low prices on flights from Aspen to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Aspen to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Aspen to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Aspen is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Aspen to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Aspen with another airline. Booking your flights between Aspen and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Aspen to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Aspen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Aspen to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Aspen to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Aspen to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9845 reviews
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

8.0 ExcellentWilliam Drew, Jun 2026
HNL - SFO
Read more United Airlines reviews

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

Everything you need to know for your flight from Aspen to San Diego

Information on your arrival and departure airports