HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Aspen

$170+ Cheap flights from San Diego to Aspen (SAN - ASE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ASE
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Aspen with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Diego to Aspen

Cheapest flights from San Diego to Aspen
Explore the most affordable flight options available from San Diego to Aspen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 19, 2026.

This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:00 pm
SAN
-
ASE
1 stop4h 24m
Delta
Tue 8/2512:03 pm
ASE
-
SAN
1 stop4h 07m
Delta
Deal found 7/16$339
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:24 pm
SAN
-
ASE
2 stops6h 05m
United Airlines
Tue 8/258:30 am
ASE
-
SAN
1 stop5h 11m
United Airlines
Deal found 7/15$344
This United Airlines deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:30 am
SAN
-
ASE
1 stop6h 53m
United Airlines
Sat 9/125:05 pm
ASE
-
SAN
1 stop4h 32m
United Airlines
Deal found 7/18$359
This Delta deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:00 pm
SAN
-
ASE
1 stop4h 20m
Delta
Mon 10/512:02 pm
ASE
-
SAN
1 stop4h 03m
Delta
Deal found 7/14$379
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 am
SAN
-
ASE
1 stop4h 34m
United Airlines
Sat 10/177:30 am
ASE
-
SAN
2 stops7h 14m
United Airlines
Deal found 7/15$384
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:00 pm
SAN
-
ASE
1 stop4h 20m
Delta
Thu 9/1712:02 pm
ASE
-
SAN
1 stop4h 03m
Delta
Deal found 7/15$389
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:24 pm
SAN
-
ASE
1 stop5h 02m
United Airlines
Thu 8/209:15 am
ASE
-
SAN
1 stop4h 26m
United Airlines
Deal found 7/15$399
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:37 pm
SAN
-
ASE
1 stop6h 39m
United Airlines
Thu 9/174:45 pm
ASE
-
SAN
1 stop6h 43m
United Airlines
Deal found 7/17$419
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:24 pm
SAN
-
ASE
2 stops6h 27m
United Airlines
Mon 10/56:05 pm
ASE
-
SAN
1 stop5h 22m
United Airlines
Deal found 7/14$438

Find flight deals from San Diego to Aspen

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Aspen (ASE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(Delta)

One-way from

$170
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$425
Provider with most accurate pricing for San Diego-Aspen Pitkin County flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Aspen Pitkin County flights.
Search Deals
From San Diego to Aspen Pitkin County
Search Deals
One-way flight from San Diego to Aspen Pitkin County
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Aspen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 19, 2026.
Use the filters below to find and compare flights from San Diego to Aspen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoAspen

SAN - ASE

SANASE

San Diego

Mon 8/17

3:00 pm-8:24 pm

1 stop4h 24m

Aspen Pitkin County

Tue 8/25

12:03 pm-3:10 pm

1 stop4h 07m

$339

San DiegoAspen

SAN - ASE

SANASE

San Diego

Sun 9/6

6:30 am-2:23 pm

1 stop6h 53m

Aspen Pitkin County

Sat 9/12

5:05 pm-8:37 pm

1 stop4h 32m

$359
Quickest round-trip

San DiegoAspen

SAN - ASE

SANASE

San Diego

Tue 9/8

3:00 pm-8:20 pm

1 stop4h 20m

Aspen Pitkin County

Thu 9/17

12:02 pm-3:05 pm

1 stop4h 03m

$389

San DiegoAspen

SAN - ASE

SANASE

San Diego

Tue 9/8

12:37 pm-8:16 pm

1 stop6h 39m

Aspen Pitkin County

Thu 9/17

4:45 pm-10:28 pm

1 stop6h 43m

$419

San DiegoAspen

SAN - ASE

SANASE

San Diego

Mon 8/17

1:24 pm-7:52 pm

1 stop5h 28m

Aspen Pitkin County

Tue 8/25

9:40 am-5:26 pm

2 stops8h 46m

$424

San DiegoAspen

SAN - ASE

SANASE

San Diego

Mon 8/3

4:01 pm-9:26 pm

1 stop4h 25m

Aspen Pitkin County

Wed 8/5

8:32 am-12:41 pm

1 stop5h 09m

$439

San DiegoAspen

SAN - ASE

SANASE

San Diego

Tue 10/27

12:39 pm-8:06 pm

1 stop6h 27m

Aspen Pitkin County

Sat 10/31

8:30 am-12:56 pm

1 stop5h 26m

$439

San DiegoAspen

SAN - ASE

SANASE

San Diego

Fri 8/14

2:24 pm-8:26 pm

1 stop5h 02m

Aspen Pitkin County

Thu 8/20

1:15 pm-7:55 pm

2 stops7h 40m

$444
Cheapest one-way
Quickest one-way

San DiegoAspen

SAN - ASE

SANASE

San Diego

Mon 8/17

3:00 pm-8:24 pm

1 stop4h 24m

$170

San DiegoAspen

SAN - ASE

SANASE

San Diego

Mon 8/17

1:24 pm-7:52 pm

1 stop5h 28m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Compare providers for flights from San Diego to Aspen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Aspen in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Aspen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Aspen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Aspen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Aspen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Aspen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Aspen

Have a flexible travel schedule? Discover the best time to fly to Aspen from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Diego to Aspen?

Currently, March is the cheapest month in which you can book a flight from San Diego to Aspen (average of $361). Flying from San Diego to Aspen in December is currently the most expensive (average of $563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from San Diego to Aspen?

Reviews of airlines servicing Aspen

Get insights into the airlines that provide service to Aspen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Aspen. Reviews last updated July 19, 2026.
Get a feel of what it's like to fly with United Airlines from San Diego to Aspen by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,006 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
10,006 reviews
United Airlines
7.4
Good
10,006 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Aspen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Diego to Aspen?

    For as low as $339, Delta can have you in Aspen from San Diego in 4h 24m. San Diego and Aspen are separated by a distance of 730 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from San Diego to Aspen round-trip?

    Our cheapest airline available from San Diego to Aspen is United Airlines. Our recent data shows that you can find tickets from as low as $228 on this airline. United Airlines is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from San Diego to Aspen that include hotel bookings?

    Yes. In addition to deals on San Diego to Aspen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Aspen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Aspen.

  • Can I find deals for business class flights from San Diego to Aspen?

    Yes. Cheapflights offers flight deals from San Diego to Aspen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, March is the cheapest month in which you can book a flight from San Diego to Aspen (average of $361). Flying from San Diego to Aspen in December is currently the most expensive (average of $563). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Aspen?

Book flights to Aspen if you plan to visit one of these locations
Snowmass Village
Leadville
Buena Vista
Snowmass

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Aspen

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Denver flights
San Francisco to Denver flights
Ontario to Denver flights
Santa Ana to Denver flights
San Diego to Denver flights
San Jose to Denver flights
Burbank to Denver flights
Sacramento to Denver flights
Las Vegas to Denver flights
Oakland to Denver flights
Reno to Denver flights
Fresno to Denver flights
Santa Rosa to Denver flights
Santa Barbara to Denver flights
San Luis Obispo to Denver flights
Long Beach to Denver flights
Los Angeles to Aspen flights
Medford to Denver flights
San Francisco to Aspen flights
Monterey to Denver flights
Arcata to Denver flights
San Francisco to Colorado Springs flights
Ontario to Colorado Springs flights
Bakersfield to Denver flights
Las Vegas to Colorado Springs flights
Palm Springs to Denver flights
Ontario to Aspen flights
Los Angeles to Colorado Springs flights
San Diego to Grand Junction flights
San Francisco to Montrose flights
Ontario to Grand Junction flights
Oakland to Colorado Springs flights
San Jose to Colorado Springs flights
Los Angeles to Grand Junction flights
Redding to Denver flights
Sacramento to Colorado Springs flights
Los Angeles to Montrose flights
San Diego to Colorado Springs flights
San Francisco to Durango flights
Burbank to Colorado Springs flights
Santa Ana to Colorado Springs flights
Los Angeles to Durango flights
Los Angeles to Hayden flights
Ontario to Durango flights
Ontario to Montrose flights
Palm Springs to Colorado Springs flights
San Diego to Durango flights
San Diego to Vail flights
San Diego to Montrose flights

Top airline flying from San Diego to Aspen

Discover the top airline that operate flights from San Diego to Aspen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$432FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.