HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$140+ Cheap flights from Aspen to San Diego (ASE - SAN)

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — SAN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Aspen to San Diego 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 Aspen to San Diego

Best flights from Aspen to San Diego
Discover carefully curated flight deals from Aspen to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/231:09 pmASE - SAN
1 stop8h 32mAmerican Airlines
Mon 1/266:20 amSAN - ASE
1 stop9h 08mAmerican Airlines
Deal found 12/10$211
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Thu 1/2212:36 pmASE - SAN
1 stop5h 52mUnited Airlines
Mon 1/2611:08 amSAN - ASE
1 stop4h 12mUnited Airlines
Deal found 12/9$281
This United Airlines deal was found by Cheapflights users on 12/11. 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 1/255:02 pmASE - SAN
1 stop6h 35mUnited Airlines
Sun 2/111:08 amSAN - ASE
1 stop4h 12mUnited Airlines
Deal found 12/11$433
This United Airlines deal was found by Cheapflights users on 12/9. 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 3/225:16 pmASE - SAN
1 stop6h 27mUnited Airlines
Tue 3/319:10 amSAN - ASE
1 stop4h 46mUnited Airlines
Deal found 12/9$468

Find flight deals from Aspen to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Aspen (ASE) to San Diego (SAN). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$211
(American Airlines)

One-way from

$140
(United Airlines)

Popular in

June

Cheapest in

August

Average price

$398
Provider with most accurate pricing for Aspen Pitkin County-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Aspen Pitkin County-San Diego flights.
Search Deals
From Aspen Pitkin County to San Diego
Search Deals
One-way flight from Aspen Pitkin County to San Diego
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Aspen to San Diego 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 December 12, 2025.
Use the filters below to find and compare flights from Aspen to San Diego that are best for you.

Fly from

Aspen

Fly to

San Diego

Route

Depart

Return

Price

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 1/23

1:09 pm-8:41 pm

1 stop8h 32m

San Diego

Mon 1/26

6:20 am-4:28 pm

1 stop9h 08m

$211

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Thu 1/22

12:36 pm-5:28 pm

1 stop5h 52m

San Diego

Mon 1/26

11:08 am-4:20 pm

1 stop4h 12m

$281

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sun 1/25

5:02 pm-10:37 pm

1 stop6h 35m

San Diego

Sun 2/1

11:08 am-4:20 pm

1 stop4h 12m

$433

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sun 3/22

5:16 pm-10:43 pm

1 stop6h 27m

San Diego

Tue 3/31

9:10 am-2:56 pm

1 stop4h 46m

$468

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sun 1/11

5:02 pm-10:37 pm

1 stop6h 35m

$140

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 2/7

1:54 pm-7:54 pm

1 stop7h 00m

$175

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 2/7

4:58 pm-10:50 pm

1 stop6h 52m

$226

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sun 1/11

4:58 pm-10:50 pm

1 stop6h 52m

$260

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 2/7

7:44 pm-2:37 pm

3 stops19h 53m

$314

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Thu 12/18

12:17 pm-3:23 pm

1 stop4h 06m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Compare providers for flights from Aspen to San Diego

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 Aspen to San Diego in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Aspen-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Aspen-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Aspen-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Aspen-San Diego flights, Cheapflights users trust eDreams the most. eDreams 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 Aspen-San Diego 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 Aspen to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Aspen 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 Aspen to San Diego

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

Currently, February is the cheapest month in which you can book a flight from Aspen to San Diego (average of $78). Flying from Aspen to San Diego in June is currently the most expensive (average of $226). 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.

What is the cheapest time of day to fly from ASE to SAN?

Find hourly flight availability from Aspen to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

One of the essential ways to save on airfare from Aspen to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 12% on airfare.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with United Airlines from Aspen to San Diego to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

Related info for your journey

Find useful and relevant information for your journey from Aspen to San Diego. 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 Aspen to San Diego?

    Airlines like American Airlines and United Airlines fly from Aspen to San Diego in about 5h 52m. The time it takes to get you to your destination can typically vary by up to 2h 40m. Airlines will cover a distance of 730 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on United Airlines is currently your cheapest option to San Diego, with prices starting at $258. United Airlines is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Aspen to San Diego 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 Aspen to San Diego?

    Currently, February is the cheapest month in which you can book a flight from Aspen to San Diego (average of $78). Flying from Aspen to San Diego in June is currently the most expensive (average of $226). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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 Aspen to San Diego

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

Top airline flying from Aspen to San Diego

Discover the top airline that operate flights from Aspen to San Diego. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$258Average$428FlexibilityNo 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.