$79 Cheap Flights from San Diego (SAN) to Austin (AUS)

View $79 flight on Wed, Sep 3, 2025Opens in a new window

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

  • 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

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

Prices were available within the past 7 days and start at $79 for one-way flights and $120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 20 - Mon, Nov 3
SAN
San Diego
AUS
Austin
$120 Roundtrip, found 3 days ago
$120
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Oct 20 from San Diego to Austin, returning Mon, Nov 3, priced at $120 found 3 days ago
Frontier Airlines
Mon, Aug 4 - Mon, Aug 4
SAN
San Diego
AUS
Austin
$131 Roundtrip, found 1 day ago
$131
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Aug 4 from San Diego to Austin, returning Mon, Aug 4, priced at $131 found 1 day ago
Spirit Airlines
Mon, Aug 11 - Thu, Aug 21
SAN
San Diego
AUS
Austin
$152 Roundtrip, found 14 hours ago
$152
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Mon, Aug 11 from San Diego to Austin, returning Thu, Aug 21, priced at $152 found 14 hours ago
Bargain Flight
Sat, Sep 27 - Thu, Oct 2
SAN
San Diego
AUS
Austin
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Bargain Flight flight, departing Sat, Sep 27 from San Diego to Austin, returning Thu, Oct 2, priced at $157 just found
Southwest Airlines
Wed, Oct 15 - Mon, Oct 20
SAN
San Diego
AUS
Austin
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Oct 15 from San Diego to Austin, returning Mon, Oct 20, priced at $157 just found
Southwest Airlines
Thu, Oct 23 - Tue, Oct 28
SAN
San Diego
AUS
Austin
$162 Roundtrip, just found
$162
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Oct 23 from San Diego to Austin, returning Tue, Oct 28, priced at $162 just found
United
Thu, Sep 4 - Tue, Sep 9
SAN
San Diego
AUS
Austin
$164 Roundtrip, just found
$164
Roundtrip
just found
Select United flight, departing Thu, Sep 4 from San Diego to Austin, returning Tue, Sep 9, priced at $164 just found
United
Mon, Sep 22 - Sat, Sep 27
SAN
San Diego
AUS
Austin
$165 Roundtrip, just found
$165
Roundtrip
just found
Select United flight, departing Mon, Sep 22 from San Diego to Austin, returning Sat, Sep 27, priced at $165 just found
Alaska Airlines
Wed, Sep 3 - Sun, Sep 7
SAN
San Diego
AUS
Austin
$167 Roundtrip, just found
$167
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Sep 3 from San Diego to Austin, returning Sun, Sep 7, priced at $167 just found
Southwest Airlines
Fri, Oct 24 - Wed, Oct 29
SAN
San Diego
AUS
Austin
$167 Roundtrip, just found
$167
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Oct 24 from San Diego to Austin, returning Wed, Oct 29, priced at $167 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 - $307 per traveler.

Graph displaying average flight prices per month

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 $290
AUS
Austin-Bergstrom Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $290
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, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$120
Distance
1162 mi
Average flight time
4 hours 57 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 October. 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 $79 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?
Grab cheap return flights starting at $130 from San Diego Intl. Airport (SAN) to Austin-Bergstrom Intl. Airport (AUS). 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 SAN on August 18 2025 and touching down at AUS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SAN to AUS?
The cheapest flights from SAN to AUS 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 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 to AUS?
With tickets starting at $65 for a one-way journey from SAN to AUS, Frontier Airlines is currently the cheapest carrier for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAN on September 1 2025. Prices were last updated on July 23 2025 and have not changed since.
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.

Explore a world of travel with Expedia

San Diego nearby Airports

Carlsbad

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