$43 Cheap Flights from San Diego (SAN) to Austin (AUS)

View $43 flight on Thu, Jan 8, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $43 for one-way flights and $86 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
SAN
San Diego
AUS
Austin
$86 Roundtrip, just found
$86
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Dec 4 from San Diego to Austin, returning Thu, Dec 11, priced at $86 just found
Frontier Airlines
Thu, Jan 8 - Sun, Jan 11
SAN
San Diego
AUS
Austin
$87 Roundtrip, just found
$87
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 8 from San Diego to Austin, returning Sun, Jan 11, priced at $87 just found
Frontier Airlines
Sun, Jan 11 - Sun, Jan 18
SAN
San Diego
AUS
Austin
$88 Roundtrip, found 4 hours ago
$88
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sun, Jan 11 from San Diego to Austin, returning Sun, Jan 18, priced at $88 found 4 hours ago
Frontier Airlines
Fri, Feb 6 - Mon, Feb 9
SAN
San Diego
AUS
Austin
$94 Roundtrip, found 3 days ago
$94
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Feb 6 from San Diego to Austin, returning Mon, Feb 9, priced at $94 found 3 days ago
Frontier Airlines
Thu, Dec 4 - Sun, Dec 7
SAN
San Diego
AUS
Austin
$96 Roundtrip, just found
$96
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Dec 4 from San Diego to Austin, returning Sun, Dec 7, priced at $96 just found
Frontier Airlines
Fri, Jan 9 - Sun, Jan 18
SAN
San Diego
AUS
Austin
$97 Roundtrip, just found
$97
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Jan 9 from San Diego to Austin, returning Sun, Jan 18, priced at $97 just found
Southwest Airlines
Tue, Jan 27 - Wed, Feb 4
SAN
San Diego
AUS
Austin
$177 Roundtrip, found 2 hours ago
$177
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Tue, Jan 27 from San Diego to Austin, returning Wed, Feb 4, priced at $177 found 2 hours ago
American Airlines
Tue, Jan 27 - Wed, Jan 28
SAN
San Diego
AUS
Austin
$197 Roundtrip, found 4 hours ago
$197
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Jan 27 from San Diego to Austin, returning Wed, Jan 28, priced at $197 found 4 hours ago
United
Mon, Jan 26 - Wed, Feb 4
SAN
San Diego
AUS
Austin
$202 Roundtrip, just found
$202
Roundtrip
just found
Select United flight, departing Mon, Jan 26 from San Diego to Austin, returning Wed, Feb 4, priced at $202 just found
Delta
Thu, Dec 4 - Mon, Dec 8
SAN
San Diego
AUS
Austin
$217 Roundtrip, just found
$217
Roundtrip
just found
Select Delta flight, departing Thu, Dec 4 from San Diego to Austin, returning Mon, Dec 8, priced at $217 just found

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

February is typically the cheapest month to fly

From $84 - $287 per traveler.

Alternative airports near Austin

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

Select flight to Austin-Bergstrom Intl. AUS. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $167
AUS
Austin-Bergstrom Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $167
Flights from San Diego (SAN) to Austin (AUS)
Origin airport
San Diego Intl.
Destination airport
Austin-Bergstrom Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$86
Distance
1162 mi
Average flight time
5 hours 21 mins

San Diego to Austin Flights

The cheapest times to fly from San Diego to Austin

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

 

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

Sunday is one of the best days to book for cheap flights from San Diego to Austin: 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 San Diego to Austin

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 San Diego to Austin in 2025. You can also book with separate airlines for your outbound and return journeys, from $43 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 San Diego to Austin 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 San Diego to Austin 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 San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS) cost?
Lock in a cheap one-way flight from $43 or cheap return flight from $86 from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
The cheapest month to fly from SAN to AUS is December, when there's less demand. Off-peak season is typically when you'll find cheap fares for travel between these airports.
Which airlines fly direct from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
If you're departing from San Diego Intl. Airport (SAN), you can board a direct flight to Austin-Bergstrom Intl. Airport (AUS) with Southwest Airlines.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
While prices may vary depending on your travel dates, Alaska Airlines and Southwest Airlines are often frequently picked for flights between San Diego Intl. Airport (SAN) and Austin-Bergstrom Intl. Airport (AUS). You can also compare carriers on Expedia and use the "Sort by" filter to find the cheapest fare for your SAN to AUS flight.
How many flights per day from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
When taking off from San Diego Intl. Airport (SAN), you can pick from an average of 4 daily direct flights to Austin-Bergstrom Intl. Airport (AUS).
What are the most popular departure times for flights from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
Flights between SAN and AUS tend to be busiest at 9 AM. For a more relaxed experience and possibly cheaper prices, look for a departure that's outside typical rush times.
What day of the week has the most flights from SAN to AUS?
Sunday offers the most flights from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS). Consider taking off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
The first flight of the day out of San Diego Intl. Airport (SAN) is at around 7:30AM UTC-8. Board this plane and you'll land at Austin-Bergstrom Intl. Airport (AUS) at approximately 12:10PM UTC-6. The overall travel time is 2h 40m.
How long does it take to fly from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
It usually takes 2 hours and 46 minutes to travel the 1,150 mi from SAN to AUS.
What airline has the least delays from SAN to AUS?
With 88% of flights typically arriving on time, American Airlines has the best on-time performance for direct flights from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS). To check your flight status and get notifications about any changes, simply head to the Expedia App.
What is the best time to fly from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
To avoid possible delays on the San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS) route, aim to fly before 3 PM. Departures after this hour 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.
What airports do you fly into for Austin from San Diego Intl. Airport (SAN)?
If you're traveling on a direct flight from San Diego Intl. Airport (SAN) to Austin, Austin-Bergstrom Intl. Airport (AUS) is the only airport you can land at.
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS) last-minute?
Last-minute bookings from SAN to AUS are generally more expensive. For the cheapest rates, start searching for flights ahead of time. That said, if you're flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book a SAN to AUS flight and hotel package?
Booking a SAN to AUS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our wide range of accommodations and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS)?
If you reserved your SAN to AUS flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

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*Available to One Key members.