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$71+ Cheap flights from Austin to San Diego (AUS - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SAN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Austin Bergstrom to San Diego are usually found in August or November, booked 74 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap flight deals from Austin to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$120
(Frontier)

One-way from

$71
(Southwest)

Popular in

March

Cheapest in

August

Average price

$241

Good round-trip deal

$177 or less

Good one-way deal

$93 or less
From Austin Bergstrom to San Diego
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One-way flight from Austin Bergstrom to San Diego
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Highest demand for flights based on searches. 9% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Austin Bergstrom to San Diego.
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Price to beat on a one-way flight from Austin Bergstrom to San Diego.
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Find flight deals from Austin to San Diego

Cheapest flights from Austin to San Diego
Explore the most affordable flight options available from Austin to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2812:39 pmAUS - SAN
Nonstop2h 57mFrontier
Thu 10/912:46 pmSAN - AUS
Nonstop3h 07mFrontier
Deal found 9/14$120
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:45 amAUS - SAN
Nonstop3h 00mSouthwest
Tue 10/216:45 pmSAN - AUS
Nonstop2h 50mSouthwest
Deal found 9/12$123
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:00 amAUS - SAN
1 stop16h 24mFrontier
Mon 10/64:48 pmSAN - AUS
Nonstop3h 01mFrontier
Deal found 9/15$124
This Priceline deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:45 amAUS - SAN
1 stop7h 43mFrontier
Thu 10/301:20 pmSAN - AUS
Nonstop2h 57mFrontier
Deal found 9/14$125
This Booking.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:00 amAUS - SAN
1 stop19h 50mFrontier
Fri 10/241:02 pmSAN - AUS
Nonstop3h 10mFrontier
Deal found 9/14$127
This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:30 amAUS - SAN
1 stop19h 23mFrontier
Mon 10/64:48 pmSAN - AUS
Nonstop3h 01mFrontier
Deal found 9/13$129
This Frontier deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/192:23 pmAUS - SAN
Nonstop2h 58mFrontier
Mon 10/208:11 amSAN - AUS
1 stop11h 04mFrontier
Deal found 9/13$130
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:08 pmAUS - SAN
Nonstop3h 06mFrontier
Sun 11/21:20 pmSAN - AUS
Nonstop2h 57mFrontier
Deal found 9/14$132
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:59 pmAUS - SAN
1 stop10h 30mMultiple Airlines
Fri 10/101:02 pmSAN - AUS
Nonstop3h 10mMultiple Airlines
Deal found 9/13$137
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:00 amAUS - SAN
1 stop7h 17mFrontier
Sun 11/91:20 pmSAN - AUS
Nonstop2h 57mFrontier
Deal found 9/14$139

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Austin to San Diego that are best for you.

Fly from

Austin

Fly to

San Diego

Route

Depart

Return

Price

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/22

6:10 am-9:05 am

1 stop4h 55m

San Diego

Sat 10/25

6:25 am-3:45 pm

1 stop7h 20m

$148

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Thu 10/30

4:50 pm-5:50 pm

Nonstop3h 00m

San Diego

Tue 11/4

2:30 pm-7:15 pm

Nonstop2h 45m

$187

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 10/28

6:10 am-9:05 am

1 stop4h 55m

San Diego

Sat 11/1

4:55 pm-9:40 pm

Nonstop2h 45m

$192

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Fri 10/31

7:05 pm-8:05 pm

Nonstop3h 00m

San Diego

Tue 11/4

5:40 pm-10:25 pm

Nonstop2h 45m

$197

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 10/28

2:20 pm-6:25 pm

2 stops6h 05m

San Diego

Thu 10/30

4:35 pm-10:40 pm

1 stop4h 05m

$207

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/22

6:10 am-9:05 am

1 stop4h 55m

San Diego

Sun 10/26

6:30 am-1:55 pm

1 stop5h 25m

$212

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Thu 11/20

6:35 am-10:15 am

1 stop5h 40m

San Diego

Mon 11/24

6:30 am-1:55 pm

1 stop5h 25m

$216

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Thu 11/20

6:00 am-7:14 am

Nonstop3h 14m

San Diego

Mon 11/24

8:15 pm-6:40 am

1 stop8h 25m

$217

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/29

2:20 pm-6:25 pm

2 stops6h 05m

San Diego

Fri 10/31

7:10 am-4:40 pm

1 stop7h 30m

$222

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/8

9:20 am-1:25 pm

1 stop6h 05m

$71

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 19 results
1
2

The best insider tips for Austin to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Austin to San Diego trip
Airports
AUS

Expect long lines at AUS, especially during early morning rush hours. Arrive early to navigate security smoothly.

Read more about AUSby Ramsey Qubein
SAN

For a quick ride to downtown, consider a taxi or rideshare, but plan for potential traffic congestion.

Read more about SANby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on AUS

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Austin to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to San Diego

How far ahead should I book a flight from Austin to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Austin to San Diego. Price data was last updated on September 12, 2025.

The best time to book flights from Austin to San Diego is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Austin to San Diego?

Currently, August is the cheapest month in which you can book a flight from Austin to San Diego (average of $286). Flying from Austin to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AUS to SAN?

Find hourly flight availability from Austin to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

It’s optimal to fly from Austin to San Diego in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Austin to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Austin to San Diego. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Austin to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Hawaiian Airlines from Austin to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,172 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Austin to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Austin to San Diego?

    You will need to book a flight from Austin Bergstrom to San Diego if you want to fly from Austin to San Diego. At least 8 different airlines have flights from Austin Bergstrom (AUS) to San Diego (SAN) on a regular basis. There are 9 flights to San Diego from the Austin airport per day. If you manage to book one that is nonstop, then you can expect the flight time from AUS to SAN to be around 2h 57m.

  • How popular is this Austin to San Diego flight route?

    Within the past month, 43 users have taken a look at flights from Austin Bergstrom to San Diego.

  • How long is the flight from Austin to San Diego?

    For as low as $148, Southwest can have you in San Diego from Austin in 4h 55m. The distance between Austin and San Diego is about 1162 mi.

  • What are the cheapest airlines flying from Austin to San Diego round-trip?

    According to our current data, Spirit Airlines ($71), Frontier ($104), and Delta ($119) offers the cheapest pricing from Austin to San Diego. Users have found that Spirit Airlines is 75% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Austin to San Diego?

    Before booking your flight to San Diego from Austin, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (77%), American Airlines (77%), Alaska Airlines( 77%).

  • What are the cheapest flights from Austin to San Diego?

    While on average a flight from Austin to San Diego is generally $501, our data shows the cheapest flight currently is $63. When looking at the most popular route, (Austin Bergstrom - San Diego), you can expect to pay $101 for that flight.

  • Can I find deals for flights from Austin to San Diego that include hotel bookings?

    Yes. In addition to deals on Austin to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to San Diego.

  • Can I find deals for business class flights from Austin to San Diego?

    Yes. Cheapflights offers flight deals from Austin to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Austin to San Diego (average of $286). Flying from Austin to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Alternative routes for Austin to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Austin to San Diego

Discover the top 8 airlines that operate flights from Austin to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$71Average$148FlexibilityNo cancel feeOn-time65%
FrontierCheapest$104Average$181FlexibilityNo cancel feeOn-time62%
DeltaCheapest$119Average$271FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$128Average$307FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$154Average$301FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$179Average$321FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$198Average$383FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$314FlexibilityNo cancel feeOn-time69%

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