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$60+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — SAN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Austin to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Austin Bergstrom to San Diego are usually found in November or October, booked 71 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap 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 December 23, 2025.

This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:22 pmAUS - SAN
1 stop18h 49mFrontier
Sat 1/3110:34 amSAN - AUS
1 stop10h 37mFrontier
Deal found 12/22$215
This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:45 amAUS - SAN
1 stop19h 14mFrontier
Sat 1/3110:34 amSAN - AUS
1 stop10h 37mFrontier
Deal found 12/22$227
This Expedia deal was found by Cheapflights users on 12/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:13 pmAUS - SAN
Nonstop3h 13mMultiple Airlines
Sat 1/315:46 pmSAN - AUS
Nonstop3h 02mMultiple Airlines
Deal found 12/22$263
This Frontier deal was found by Cheapflights users on 12/22. 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.
Fri 12/262:54 pmAUS - SAN
1 stop6h 21mFrontier
Sat 1/3110:34 amSAN - AUS
1 stop10h 37mFrontier
Deal found 12/22$265
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Thu 12/256:45 amAUS - SAN
1 stop19h 14mFrontier
Wed 12/316:25 amSAN - AUS
1 stop15h 49mFrontier
Deal found 12/22$266
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Tue 12/3011:33 amAUS - SAN
1 stop24h 24mFrontier
Sat 1/3110:34 amSAN - AUS
1 stop10h 37mFrontier
Deal found 12/22$270
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Wed 12/316:45 amAUS - SAN
1 stop19h 14mMultiple Airlines
Sat 1/317:48 amSAN - AUS
Nonstop3h 02mMultiple Airlines
Deal found 12/22$272
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Sat 12/276:45 amAUS - SAN
1 stop14h 30mFrontier
Sat 1/3110:34 amSAN - AUS
1 stop10h 37mFrontier
Deal found 12/22$278
This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Tue 12/3011:33 amAUS - SAN
1 stop24h 24mFrontier
Mon 1/57:21 pmSAN - AUS
1 stop18h 27mFrontier
Deal found 12/20$280
This Kiwi.com deal was found by Cheapflights users on 12/22. 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 12/297:22 pmAUS - SAN
1 stop18h 49mFrontier
Thu 1/14:47 pmSAN - AUS
1 stop5h 27mFrontier
Deal found 12/22$285
This Kiwi.com deal was found by Cheapflights users on 12/22. 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.
Tue 12/305:13 pmAUS - SAN
1 stop20h 58mMultiple Airlines
Sat 1/312:24 pmSAN - AUS
Nonstop3h 02mMultiple Airlines
Deal found 12/22$286

Find 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 December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$104
(Cheapflightsfares)

One-way from

$60
(Trip.com)

Popular in

March

Cheapest in

November

Average price

$316

Good round-trip deal

$197 or less

Good one-way deal

$88 or less
Provider with most accurate pricing for Austin Bergstrom-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-San Diego flights.
Search Deals
From Austin Bergstrom to San Diego
Search Deals
One-way flight from Austin Bergstrom to San Diego
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Austin Bergstrom to San Diego.
Search Deals
Price to beat on a one-way flight from Austin Bergstrom to San Diego.
Search Deals

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 December 23, 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

Tue 1/20

10:40 am-11:31 pm

1 stop14h 51m

San Diego

Tue 1/27

7:00 am-10:40 pm

1 stop13h 40m

$133

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Sat 1/17

3:39 pm-5:06 pm

Nonstop3h 27m

San Diego

Sat 1/24

7:48 am-12:50 pm

Nonstop3h 02m

$176

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 1/20

6:00 am-7:32 am

Nonstop3h 32m

San Diego

Wed 1/21

9:44 am-2:46 pm

Nonstop3h 02m

$177

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 1/28

6:00 am-7:32 am

Nonstop3h 32m

San Diego

Sat 1/31

7:48 am-12:50 pm

Nonstop3h 02m

$177

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 1/20

3:39 pm-5:06 pm

Nonstop3h 27m

San Diego

Tue 1/27

7:48 am-12:50 pm

Nonstop3h 02m

$177

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Sun 2/8

6:00 am-7:32 am

Nonstop3h 32m

San Diego

Wed 2/11

9:44 am-2:46 pm

Nonstop3h 02m

$187

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 1/20

1:30 pm-2:57 pm

Nonstop3h 27m

San Diego

Thu 1/29

7:48 am-12:50 pm

Nonstop3h 02m

$187

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Sun 1/18

3:39 pm-5:06 pm

Nonstop3h 27m

San Diego

Tue 1/27

9:44 am-2:46 pm

Nonstop3h 02m

$187

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Mon 1/12

7:59 pm-9:29 pm

Nonstop3h 30m

San Diego

Sat 1/17

7:48 am-12:50 pm

Nonstop3h 02m

$187

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Thu 1/22

3:39 pm-5:06 pm

Nonstop3h 27m

San Diego

Thu 1/29

7:48 am-12:50 pm

Nonstop3h 02m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Austin to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Austin-San Diego flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Austin-San Diego flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Austin-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-San Diego flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 19, 2025.

The best time to book flights from Austin to San Diego is 71 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, December is the cheapest month in which you can book a flight from Austin to San Diego (average of $73). Flying from Austin to San Diego in July is currently the most expensive (average of $132). 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 December 23, 2025.

It’s optimal to fly from Austin to San Diego in the evening. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.

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 December 20, 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. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Austin to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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

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 December 23, 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
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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
11,514 reviews
Alaska Airlines
8.0
Very good
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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
4,255 reviews
Alaska Airlines
8.0
Very good
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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
2,820 reviews
Alaska Airlines
8.0
Very good
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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
11,051 reviews
Alaska Airlines
8.0
Very good
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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
3,074 reviews
Alaska Airlines
8.0
Very good
11,514 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

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 10 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 3h 10m.

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

    Within the past month, 42 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 $176, Frontier can have you in San Diego from Austin in 3h 27m. The distance between Austin and San Diego is about 1162 mi. This flight may include one or multiple stops.

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

    According to our current data, Spirit Airlines ($69), Frontier ($72), and Hawaiian Airlines ($108) 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 cheapest airlines to fly from Austin to San Diego one-way?

    The cheapest airlines for a one-way flight from Austin to San Diego are Frontier ($40), Spirit Airlines ($49), and Alaska Airlines ($88).

  • 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 $404, our data shows the cheapest flight currently is $33. When looking at the most popular route, (Austin Bergstrom - San Diego), you can expect to pay $129 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, December is the cheapest month in which you can book a flight from Austin to San Diego (average of $73). Flying from Austin to San Diego in July is currently the most expensive (average of $132). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$71Average$148FlexibilityNo cancel feeOn-time65%
FrontierCheapest$83Average$184FlexibilityNo cancel feeOn-time62%
DeltaCheapest$119Average$274FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$127Average$305FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$152Average$313FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$182Average$328FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$216Average$314FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$233Average$370FlexibilityNo cancel feeOn-time71%

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