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

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

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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
Frontier Airlines
Spirit Airlines
Bargain Flight
Southwest Airlines
Southwest Airlines
United
United
Alaska Airlines
Southwest Airlines

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.

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.

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