HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$226+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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

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 September 11, 2025.

Round-trip from

$269
(American Airlines)

One-way from

$226
(American Airlines)

Popular in

June

Cheapest in

August

Average price

$461
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. 19% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Aspen to San Diego

Cheapest flights from Aspen to San Diego
Explore the most affordable flight options available from Aspen to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:16 pmASE - SAN
1 stop6h 47mAmerican Airlines
Tue 9/307:13 amSAN - ASE
1 stop7h 57mAmerican Airlines
Deal found 9/11$269
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/315:12 pmASE - SAN
1 stop4h 42mUnited Airlines
Tue 11/412:43 pmSAN - ASE
1 stop4h 45mUnited Airlines
Deal found 9/9$319
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:01 pmASE - SAN
1 stop4h 23mDelta
Sat 11/296:15 amSAN - ASE
1 stop5h 07mDelta
Deal found 9/11$324
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 9/257:10 amASE - SAN
1 stop4h 17mUnited Airlines
Sun 9/286:53 amSAN - ASE
1 stop5h 06mUnited Airlines
Deal found 9/11$339
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:34 pmASE - SAN
2 stops9h 10mUnited Airlines
Sat 11/296:15 amSAN - ASE
1 stop5h 23mUnited Airlines
Deal found 9/10$364
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:15 pmASE - SAN
1 stop4h 59mUnited Airlines
Mon 9/296:53 amSAN - ASE
1 stop6h 46mUnited Airlines
Deal found 9/10$369
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:15 pmASE - SAN
1 stop5h 00mUnited Airlines
Mon 10/206:30 pmSAN - ASE
1 stop15h 09mUnited Airlines
Deal found 9/10$387

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 September 11, 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

Wed 11/26

5:12 pm-8:54 pm

1 stop4h 42m

San Diego

Sat 11/29

6:15 am-12:38 pm

1 stop5h 23m

$319

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Thu 3/5

1:00 pm-5:10 pm

1 stop5h 10m

San Diego

Mon 3/9

11:20 am-6:26 pm

1 stop6h 06m

$319

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Wed 11/26

12:01 pm-3:24 pm

1 stop4h 23m

San Diego

Sat 11/29

6:15 am-12:22 pm

1 stop5h 07m

$324

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Thu 9/25

7:10 am-10:27 am

1 stop4h 17m

San Diego

Sun 9/28

6:53 am-12:59 pm

1 stop5h 06m

$339

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 9/26

1:00 pm-11:41 pm

2 stops11h 41m

San Diego

Tue 9/30

8:00 am-6:26 pm

2 stops9h 26m

$349

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 2/7

12:10 pm-5:52 pm

1 stop6h 42m

$226

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 2/7

5:02 pm-11:42 pm

2 stops7h 40m

$266

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 9/19

12:02 pm-3:25 pm

1 stop4h 23m

$321

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 9/19

1:15 pm-7:46 pm

2 stops7h 31m

$326

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Sat 9/20

10:24 am-6:03 pm

1 stop8h 39m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 11 results
1
2

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, August is the cheapest month in which you can book a flight from Aspen to San Diego (average of $286). Flying from Aspen to San Diego in March is currently the most expensive (average of $366). 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 September 11, 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 September 11, 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
8,937 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

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
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

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 United Airlines and Delta fly from Aspen to San Diego in about 4h 23m. The time it takes to get you to your destination can typically vary by up to 19m. 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 $328. United Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Aspen to San Diego one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $226. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Aspen to San Diego for a low price.

  • 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, August is the cheapest month in which you can book a flight from Aspen to San Diego (average of $286). Flying from Aspen to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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 San Diego flights
Denver to Santa Ana flights
Denver to San Jose flights
Denver to Sacramento flights
Denver to Palm Springs flights
Denver to Burbank flights
Colorado Springs to Las Vegas flights
Denver to Reno flights
Denver to Santa Barbara flights
Denver to Oakland flights
Denver to Fresno flights
Denver to San Luis Obispo flights
Colorado Springs to Los Angeles flights
Grand Junction to San Diego flights
Denver to Monterey flights
Grand Junction to Los Angeles flights
Denver to Bakersfield flights
Denver to Long Beach flights
Colorado Springs to Ontario flights
Colorado Springs to San Diego flights
Denver to Arcata flights
Aspen to Los Angeles flights
Denver to Medford flights
Vail to Los Angeles flights
Colorado Springs to Burbank flights
Colorado Springs to San Jose flights
Durango to Las Vegas flights
Montrose to Los Angeles flights
Grand Junction to Las Vegas flights
Denver to Santa Rosa flights
Montrose to Reno flights
Grand Junction to Ontario flights
Montrose to San Jose flights
Colorado Springs to Santa Ana flights
Grand Junction to San Francisco flights
Aspen to Las Vegas flights
Colorado Springs to San Francisco flights
Colorado Springs to Sacramento flights
Grand Junction to Santa Ana flights
Vail to Las Vegas flights
Montrose to San Francisco flights
Aspen to San Francisco flights
Montrose to Las Vegas flights
Aspen to Ontario flights
Durango to Los Angeles 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$328Average$494FlexibilityNo 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.