$77 Cheap Flights from Austin (AUS) to San Diego (SAN)

View $77 flight on Fri, Aug 22, 2025Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Today's featured flight deals from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Austin to San Diego (AUS-SAN)

Prices were available within the past 7 days and start at $77 for one-way flights and $145 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Aug 22 - Mon, Aug 25
AUS
Austin
SAN
San Diego
$145 Roundtrip, just found
$145
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Aug 22 from Austin to San Diego, returning Mon, Aug 25, priced at $145 just found
Frontier Airlines
Mon, Sep 15 - Sat, Sep 20
AUS
Austin
SAN
San Diego
$147 Roundtrip, found 2 hours ago
$147
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Sep 15 from Austin to San Diego, returning Sat, Sep 20, priced at $147 found 2 hours ago
Southwest Airlines
Sat, Nov 8 - Thu, Nov 13
AUS
Austin
SAN
San Diego
$148 Roundtrip, found 14 hours ago
$148
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Sat, Nov 8 from Austin to San Diego, returning Thu, Nov 13, priced at $148 found 14 hours ago
Frontier Airlines
Fri, Oct 10 - Thu, Nov 13
AUS
Austin
SAN
San Diego
$150 Roundtrip, found 3 days ago
$150
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Oct 10 from Austin to San Diego, returning Thu, Nov 13, priced at $150 found 3 days ago
Frontier Airlines
Fri, Aug 22 - Thu, Aug 28
AUS
Austin
SAN
San Diego
$156 Roundtrip, just found
$156
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Aug 22 from Austin to San Diego, returning Thu, Aug 28, priced at $156 just found
Southwest Airlines
Wed, Oct 22 - Wed, Nov 12
AUS
Austin
SAN
San Diego
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Oct 22 from Austin to San Diego, returning Wed, Nov 12, priced at $157 just found
Southwest Airlines
Tue, Oct 21 - Mon, Oct 27
AUS
Austin
SAN
San Diego
$160 Roundtrip, found 19 hours ago
$160
Roundtrip
found 19 hours ago
Select Southwest Airlines flight, departing Tue, Oct 21 from Austin to San Diego, returning Mon, Oct 27, priced at $160 found 19 hours ago
Alaska Airlines
Tue, Nov 4 - Fri, Nov 7
AUS
Austin
SAN
San Diego
$164 Roundtrip, just found
$164
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Nov 4 from Austin to San Diego, returning Fri, Nov 7, priced at $164 just found
American Airlines
Wed, Sep 17 - Fri, Sep 19
AUS
Austin
SAN
San Diego
$166 Roundtrip, just found
$166
Roundtrip
just found
Select American Airlines flight, departing Wed, Sep 17 from Austin to San Diego, returning Fri, Sep 19, priced at $166 just found
United
Tue, Oct 28 - Fri, Nov 7
AUS
Austin
SAN
San Diego
$169 Roundtrip, found 10 hours ago
$169
Roundtrip
found 10 hours ago
Select United flight, departing Tue, Oct 28 from Austin to San Diego, returning Fri, Nov 7, priced at $169 found 10 hours ago

Find the cheapest month to fly from Austin (AUS) to San Diego (SAN)

February is typically the cheapest month to fly

From $88 - $307 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $334
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $334
Select flight to McClellan-Palomar CLD. Cheapest option available. Average driving time to city center is 38 minutes. Flights from $207
CLD
McClellan-Palomar
Cheapest
Average driving time to city center38 min
Flights from $207
Flights from Austin (AUS) to San Diego (SAN)
Origin airport
Austin-Bergstrom Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$145
Distance
1162 mi
Average flight time
1 hour 13 mins

Austin to San Diego Flights

The cheapest times to fly from Austin 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 Austin to San Diego are during the month of August. You can find some of the cheapest flights from Austin to San Diego with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Austin 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 Austin 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 Austin to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $77 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 Austin 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 Austin 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 Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN) cost?
You can score cheap return tickets from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN) starting from $123. Reserve your seat and get ready for takeoff. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving AUS on August 6 2025 and touching down at SAN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from AUS to SAN?
The cheapest flights from AUS 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 Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
When departing from Austin-Bergstrom Intl. Airport (AUS), you can take a direct flight to San Diego Intl. Airport (SAN) with Southwest Airlines.
What is the cheapest airline that flies from AUS to SAN?
With prices starting from $57 for a one-way journey from AUS to SAN, Frontier Airlines is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from AUS on August 13 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
Every day on average, 4 direct flights take off from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN). Select the departure time that best suits your plans.
What are the most popular departure times for flights from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
Flights between AUS and SAN are busiest at 6 AM. If you want a quieter experience and potentially cheaper tickets, choose a departure that's outside typical rush times.
What day of the week has the most flights from AUS to SAN?
If you depart on a Friday, you'll get the biggest range of options for flights from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN).
What is the earliest flight from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
Austin-Bergstrom Intl. Airport (AUS)'s first flight to San Diego Intl. Airport (SAN) takes off at approximately 6:10AM UTC-6. With a total flight time of 3h 20m, you'll land at around 7:30AM UTC-8.
How long does it take to fly from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
Flights from AUS to SAN have an average travel time of 3 hours and 15 minutes. The total distance between these two airports is 1,150 mi.
What airline has the least delays from AUS to SAN?
Consider traveling with American Airlines if you'd like to fly straight from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN) without any interruptions. This airline has the best track record for punctuality, with an on-time performance of 87%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
To avoid possible delays on the Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN) route, fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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.
What airports do you fly into for San Diego from Austin-Bergstrom Intl. Airport (AUS)?
San Diego Intl. Airport (SAN) is the only airport in San Diego with direct flights from Austin-Bergstrom Intl. Airport (AUS). Compare your options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN) last-minute?
Holding off until just before your departure to book a ticket from AUS to SAN often results in higher prices. Although you may find some last-minute offers, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of getting a bargain.
Is it cheaper to book an AUS to SAN flight and hotel package?
You'll generally save money by booking an AUS to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)?
You can usually reschedule or cancel your AUS to SAN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Explore a world of travel with Expedia

San Diego nearby Airports

Carlsbad

Austin to McClellan-Palomar
$176.36
*Available to One Key members.