SAN - ASE

$249 Find Cheap Flights from San Diego to Aspen

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Aspen departing on 12/5. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Aspen, 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 San Diego to Aspen, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Aspen 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 San Diego to Aspen

Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
9:37 am - 7:34 pmSAN-ASE
8h 57m1 stop
American Airlines Logo
7:33 am - 3:48 pmASE-SAN
9h 15m1 stop
$249American Airlines
Find Deal
Wed, Dec 10 - Sat, Dec 13
American Airlines Logo
9:37 am - 7:34 pmSAN-ASE
8h 57m1 stop
American Airlines Logo
7:33 am - 3:19 pmASE-SAN
8h 46m2 stops
$254American Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
American Airlines Logo
8:18 am - 4:10 pmSAN-ASE
6h 52m1 stop
American Airlines Logo
12:16 pm - 8:20 pmASE-SAN
9h 04m1 stop
$269American Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Delta Logo
6:15 am - 12:25 pmSAN-ASE
5h 10m1 stop
Delta Logo
12:15 pm - 3:23 pmASE-SAN
4h 08m1 stop
$289Delta
Find Deal
Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
10:47 am - 7:34 pmSAN-ASE
7h 47m1 stop
American Airlines Logo
7:33 am - 3:48 pmASE-SAN
9h 15m1 stop
$314American Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
9:37 am - 7:34 pmSAN-ASE
8h 57m1 stop
American Airlines Logo
7:33 am - 3:21 pmASE-SAN
8h 48m2 stops
$320American Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
11:02 am - 8:18 pmSAN-ASE
8h 16m2 stops
United Airlines Logo
8:30 am - 1:04 pmASE-SAN
5h 34m1 stop
$322United Airlines
Find Deal
Fri, Oct 10 - Thu, Oct 16
Delta Logo
10:00 am - 5:52 pmSAN-ASE
6h 52m1 stop
Delta Logo
12:10 pm - 3:19 pmASE-SAN
4h 09m1 stop
$324Delta
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
11:02 am - 6:21 pmSAN-ASE
6h 19m2 stops
United Airlines Logo
5:12 pm - 11:42 pmASE-SAN
7h 30m2 stops
$367United Airlines
Find Deal
Sun, Dec 28 - Fri, Jan 2
Alaska Airlines Logo
7:52 pm - 6:41 pmSAN-ASE
21h 49m2 stops
Alaska Airlines Logo
1:45 pm - 9:52 amASE-SAN
21h 07m2 stops
$4,957Alaska Airlines
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $249 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 25% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$249
Typical prices: $516-770
American Airlines
Fri 12/5Mon 12/8
SAN - ASE • 1 stop
Cheapest one-way
$446
Typical prices: $255-341
Delta
Fri 9/19
SAN - ASE • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Aspen!
Booking Insights

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

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

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

What’s the cheapest day of the week to fly from San Diego to Aspen?

The average price of all round-trip flights from San Diego to Aspen clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Aspen on a Friday and more expensive on a Monday. On your return trip to San Diego, you should consider flying back on a Friday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Aspen, 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 San Diego to Aspen is August, where tickets cost $389 (return) on average. On the other hand, the most expensive months are October and March, where the average cost of round-trip tickets is $718 and $652 respectively.

How far in advance should I book a flight from San Diego to Aspen?

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

To get a below average price on the flight from San Diego to Aspen, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$249
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 21% increase in price.
Flight from San Diego to Aspen

When to book flights from San Diego to Aspen

Are your dates flexible? Find out the best times to travel from San Diego to Aspen 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 San Diego to Aspen

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

    In the last 3 days, the lowest price for a flight from San Diego to Aspen was $446 for a one-way ticket and $249 for a round-trip.

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

    No, a passport isn't needed to fly from San Diego to Aspen. However, local authorities might ask for an official ID.

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

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

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between San Diego and Aspen, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Diego to Aspen, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to Aspen are Delta and United Airlines. With an average price for the route of $378 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $538 and an overall rating of 7.4.

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

    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 San Diego to Aspen.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Aspen from San Diego 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 San Diego to Aspen?

    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 Aspen with an airline and back to San Diego with another airline. Booking your flights between San Diego and ASE 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 San Diego to Aspen?

    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 Aspen from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Diego to Aspen

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Aspen. 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 San Diego to Aspen? 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.
7.9
DeltaOverall score based on 7954 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
Airline reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

2.0 MediocreAnonymous, Sep 2025SNA - SEA
Read more Delta reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

Our bags took a long time to get unloaded once we landed.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

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

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