$216 Cheap Flights from Aspen (ASE) to San Diego (SAN)

View $216 flight on Mon, Feb 16, 2026Opens in a new window

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Find available prices by choosing your travel dates.

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

Prices were available within the past 7 days and start at $216 for one-way flights and $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jun 12 - Tue, Jun 17
ASE
Aspen
SAN
San Diego
$289 Roundtrip, found 3 days ago
$289
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Jun 12 from Aspen to San Diego, returning Tue, Jun 17, priced at $289 found 3 days ago
United
Thu, Jul 17 - Tue, Jul 29
ASE
Aspen
SAN
San Diego
$289 Roundtrip, found 3 days ago
$289
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jul 17 from Aspen to San Diego, returning Tue, Jul 29, priced at $289 found 3 days ago
United
Thu, Jun 12 - Tue, Jun 17
ASE
Aspen
SAN
San Diego
$294 Roundtrip, found 3 days ago
$294
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 12 from Aspen to San Diego, returning Tue, Jun 17, priced at $294 found 3 days ago
American Airlines
Thu, Jun 12 - Mon, Jun 16
ASE
Aspen
CLD
Carlsbad
$299 Roundtrip, found 5 days ago
$299
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Jun 12 from Aspen to Carlsbad, returning Mon, Jun 16, priced at $299 found 5 days ago
United
Thu, Jun 12 - Tue, Jun 17
ASE
Aspen
SAN
San Diego
$316 Roundtrip, found 3 days ago
$316
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 12 from Aspen to San Diego, returning Tue, Jun 17, priced at $316 found 3 days ago
United
Thu, Jun 12 - Tue, Jun 17
ASE
Aspen
SAN
San Diego
$321 Roundtrip, found 3 days ago
$321
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 12 from Aspen to San Diego, returning Tue, Jun 17, priced at $321 found 3 days ago
United
Thu, Jun 12 - Tue, Jun 17
ASE
Aspen
SAN
San Diego
$322 Roundtrip, found 3 days ago
$322
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 12 from Aspen to San Diego, returning Tue, Jun 17, priced at $322 found 3 days ago
American Airlines
Wed, Sep 17 - Sat, Sep 20
ASE
Aspen
SAN
San Diego
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Sep 17 from Aspen to San Diego, returning Sat, Sep 20, priced at $324 found 2 days ago
Delta
Mon, Jul 14 - Tue, Jul 29
ASE
Aspen
SAN
San Diego
$327 Roundtrip, found 3 days ago
$327
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Jul 14 from Aspen to San Diego, returning Tue, Jul 29, priced at $327 found 3 days ago
United
Wed, Jun 4 - Sat, Jun 7
ASE
Aspen
SAN
San Diego
$328 Roundtrip, found 6 days ago
$328
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jun 4 from Aspen to San Diego, returning Sat, Jun 7, priced at $328 found 6 days ago
Flights from Aspen (ASE) to San Diego (SAN)
Origin airport
Pitkin County
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$288
Distance
730 mi

Aspen to San Diego Flights

The cheapest times to fly from Aspen to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Aspen to San Diego are during the month of June. You can find some of the cheapest flights from Aspen to San Diego with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Aspen to San Diego

Sunday is one of the best days to book for cheap flights from Aspen to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Aspen to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Aspen to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $216 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Aspen to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Aspen to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN) cost?
Discover the latest flight deals from ASE to SAN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ASE to SAN?
The cheapest flights from ASE to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN)?
You can’t fly nonstop from Aspen, CO (ASE-Pitkin County) to San Diego Intl. Airport (SAN). However, you can seamlessly travel to San Diego without any layovers by departing from Eagle County Regional Airport (EGE).
What is the cheapest airline that flies from ASE to SAN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ASE to SAN. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN)?
You’ll have to hop on a flight with a layover if you’re traveling from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from ASE to SAN?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on a range of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN)?
To avoid potential delays on the Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN) route, travel before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN) last-minute?
Last-minute bookings from ASE to SAN are generally more expensive. To secure the best rates, start looking for flights well ahead of time. That said, if you’re flexible with your travel dates, you may find a cheap ticket right before your trip.
Is it cheaper to book an ASE to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking an ASE to SAN flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Pitkin County Airport (ASE) to San Diego Intl. Airport (SAN)?
Typically, you can modify or cancel your ASE to SAN flight. However, there may be additional fees, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline’s policies and fees on flight changes, or if you need further details, head to our Customer Service portal.

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*Available to One Key members.