HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$170+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ASE — SAN
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
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

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 June 15, 2026.

This United Airlines deal was found by Cheapflights users on 6/10. 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 7/37:15 pm
ASE
-
SAN
1 stop5h 39m
United Airlines
Fri 7/108:45 am
SAN
-
ASE
1 stop6h 23m
United Airlines
Deal found 6/10$329
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/268:30 am
ASE
-
SAN
1 stop5h 11m
United Airlines
Sat 8/296:30 am
SAN
-
ASE
1 stop5h 04m
United Airlines
Deal found 6/10$409
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 11/311:00 am
ASE
-
SAN
1 stop7h 10m
United Airlines
Wed 11/411:20 am
SAN
-
ASE
1 stop6h 06m
United Airlines
Deal found 6/14$439
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Sun 7/126:12 pm
ASE
-
SAN
1 stop5h 13m
United Airlines
Sat 7/1811:44 am
SAN
-
ASE
1 stop7h 11m
United Airlines
Deal found 6/14$544
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/38:32 am
ASE
-
SAN
1 stop7h 23m
United Airlines
Fri 7/34:07 pm
SAN
-
ASE
1 stop4h 19m
United Airlines
Deal found 6/14$562
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:31 am
ASE
-
SAN
1 stop6h 08m
American Airlines
Fri 7/37:15 pm
SAN
-
ASE
2 stops13h 46m
American Airlines
Deal found 6/14$585
This American Airlines deal was found by Cheapflights users on 6/10. 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 7/312:51 pm
ASE
-
SAN
2 stops9h 43m
American Airlines
Fri 7/109:41 am
SAN
-
ASE
2 stops9h 36m
American Airlines
Deal found 6/10$595

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 June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(United Airlines)

One-way from

$170
(Delta)

Popular in

January

Cheapest in

August

Average price

$383
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. 10% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 15, 2026.
Use the filters below to find and compare flights from Aspen to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 7/3

7:15 pm-11:54 pm

1 stop5h 39m

San Diego

Fri 7/10

8:45 am-4:08 pm

1 stop6h 23m

$329
Quickest round-trip

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Wed 8/26

8:30 am-12:41 pm

1 stop5h 11m

San Diego

Sat 8/29

6:30 am-12:34 pm

1 stop5h 04m

$409

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Tue 11/3

11:00 am-5:10 pm

1 stop7h 10m

San Diego

Wed 11/4

11:20 am-6:26 pm

1 stop6h 06m

$439
Cheapest one-way
Quickest one-way

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Tue 7/21

12:03 pm-3:08 pm

1 stop4h 05m

$170

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Tue 8/25

11:25 am-5:00 pm

1 stop6h 35m

$170

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Tue 8/25

12:03 pm-3:10 pm

1 stop4h 07m

$170

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Tue 7/21

5:10 pm-8:46 pm

1 stop4h 36m

$170

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Thu 6/25

6:12 pm-10:25 pm

1 stop5h 13m

$220

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Wed 7/8

5:10 pm-8:46 pm

1 stop4h 36m

$220

AspenSan Diego

ASE - SAN

ASESAN

Aspen Pitkin County

Fri 7/3

3:25 pm-10:49 pm

2 stops8h 24m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Aspen-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Aspen-San Diego flight deals on Cheapflights vs. FlightHub >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 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 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, August is the cheapest month in which you can book a flight from Aspen to San Diego (average of $328). Flying from Aspen to San Diego in January is currently the most expensive (average of $756). 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 Aspen to San Diego?

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 June 15, 2026.
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
9,830 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,830 reviews
United Airlines
7.4
Good
9,830 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 fly from Aspen to San Diego in about 5h 39m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 730 mi.

  • 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 41% 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, August is the cheapest month in which you can book a flight from Aspen to San Diego (average of $328). Flying from Aspen to San Diego in January is currently the most expensive (average of $756). 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
National City
Chula Vista
Poway
Coronado
La Mesa
Santee
Julian
Lemon Grove

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 Sacramento flights
Denver to Reno flights
Denver to San Jose flights
Colorado Springs to Las Vegas flights
Denver to Burbank flights
Denver to Santa Barbara flights
Denver to Oakland flights
Denver to Fresno flights
Colorado Springs to San Diego flights
Denver to Monterey flights
Denver to San Luis Obispo flights
Denver to Palm Springs flights
Denver to Long Beach flights
Denver to Medford flights
Grand Junction to Los Angeles flights
Colorado Springs to Reno flights
Denver to Arcata flights
Colorado Springs to Los Angeles flights
Denver to Santa Rosa flights
Grand Junction to Las Vegas flights
Colorado Springs to Santa Ana flights
Grand Junction to San Diego flights
Aspen to Los Angeles flights
Colorado Springs to Burbank flights
Grand Junction to Sacramento flights
Colorado Springs to Ontario flights
Denver to Bakersfield flights
Durango to Las Vegas flights
Durango to San Francisco flights
Colorado Springs to Santa Barbara flights
Grand Junction to San Francisco flights
Aspen to San Francisco flights
Colorado Springs to Sacramento flights
Durango to San Diego flights
Montrose to Las Vegas flights
Colorado Springs to San Francisco flights
Vail to Los Angeles flights
Vail to San Diego flights
Grand Junction to Santa Ana flights
Grand Junction to Ontario flights
Durango to Los Angeles flights
Durango to Sacramento flights
Colorado Springs to Palm Springs 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 June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$261Average$383FlexibilityNo 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.