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Cheap flights from Austin to San Diego from $71

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to San Diego departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Southwest Logo
7:45 am - 8:45 amAUS-SAN
3h 00mnonstop
Southwest Logo
6:45 pm - 11:35 pmSAN-AUS
2h 50mnonstop
$123Southwest
Find Deal
Tue, Oct 14 - Tue, Oct 21
Frontier Logo
12:39 pm - 1:36 pmAUS-SAN
2h 57mnonstop
Frontier Logo
6:41 am - 12:33 amSAN-AUS
15h 52m1 stop
$124Frontier
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Sun, Oct 5 - Wed, Oct 8
Frontier Logo
2:00 pm - 9:20 pmAUS-SAN
9h 20m1 stop
Frontier Logo
1:02 pm - 6:12 pmSAN-AUS
3h 10mnonstop
$125Frontier
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Wed, Oct 22 - Fri, Oct 24
Frontier Logo
8:00 am - 10:24 pmAUS-SAN
16h 24m1 stop
Frontier Logo
4:48 pm - 9:49 pmSAN-AUS
3h 01mnonstop
$126Frontier
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Tue, Sep 30 - Fri, Oct 3
Frontier Logo
6:00 am - 11:50 pmAUS-SAN
19h 50m1 stop
Frontier Logo
1:02 pm - 6:12 pmSAN-AUS
3h 10mnonstop
$127Frontier
Find Deal
Wed, Oct 22 - Fri, Oct 24
Southwest Logo
6:10 am - 9:05 amAUS-SAN
4h 55m1 stop
Southwest Logo
6:45 pm - 11:35 pmSAN-AUS
2h 50mnonstop
$128Southwest
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Tue, Oct 14 - Tue, Oct 21
Frontier Logo
6:30 am - 11:53 pmAUS-SAN
19h 23m1 stop
Frontier Logo
4:48 pm - 9:49 pmSAN-AUS
3h 01mnonstop
$129Frontier
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Thu, Oct 2 - Mon, Oct 6
Frontier Logo
2:23 pm - 3:21 pmAUS-SAN
2h 58mnonstop
Frontier Logo
8:11 am - 9:15 pmSAN-AUS
11h 04m1 stop
$130Frontier
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Sun, Oct 19 - Mon, Oct 20
American Airlines Logo
5:00 am - 8:37 amAUS-SAN
5h 37m1 stop
American Airlines Logo
4:20 pm - 11:55 pmSAN-AUS
5h 35m1 stop
$159American Airlines
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Tue, Oct 7 - Tue, Oct 14
American Airlines Logo
5:42 pm - 10:24 pmAUS-SAN
6h 42m1 stop
American Airlines Logo
12:40 pm - 7:56 pmSAN-AUS
5h 16m1 stop
$168American Airlines
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Wed, Oct 22 - Sat, Oct 25

Southwest flights from Austin to San Diego

Our best Southwest deals on Austin to San Diego flight tickets
Southwest
Oct 14
AUS7:45 amAustin Bergstrom
3h 00m
SAN8:45 amSan Diego
Oct 21
SAN6:45 pmSan Diego
2h 50m
AUS11:35 pmAustin Bergstrom
$123
Find similar
Southwest
Oct 14
AUS6:10 amAustin Bergstrom
4h 55m
1 stop
SAN9:05 amSan Diego
Oct 21
SAN6:45 pmSan Diego
2h 50m
AUS11:35 pmAustin Bergstrom
$128
Find similar
Southwest
Oct 22
AUS7:45 amAustin Bergstrom
3h 00m
SAN8:45 amSan Diego
Oct 25
SAN4:55 pmSan Diego
2h 45m
AUS9:40 pmAustin Bergstrom
$133
Find similar

Frontier flights from Austin to San Diego

Our best Frontier deals on Austin to San Diego flight tickets
Frontier
Sep 28
AUS12:39 pmAustin Bergstrom
2h 57m
SAN1:36 pmSan Diego
Oct 9
SAN12:46 pmSan Diego
3h 07m
AUS5:53 pmAustin Bergstrom
$120
Find similar
Frontier
Oct 5
AUS12:39 pmAustin Bergstrom
2h 57m
SAN1:36 pmSan Diego
Oct 8
SAN6:41 amSan Diego
15h 52m
1 stop
AUS12:33 amAustin Bergstrom
$124
Find similar
Frontier
Oct 22
AUS2:00 pmAustin Bergstrom
9h 20m
1 stop
SAN9:20 pmSan Diego
Oct 24
SAN1:02 pmSan Diego
3h 10m
AUS6:12 pmAustin Bergstrom
$125
Find similar

momondo 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, momondo users made 832,500 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

Fly to

Route

Depart

Return

Price

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 10/14

7:45 am-8:45 am

Nonstop3h 00m

San Diego

Tue 10/21

6:45 pm-11:35 pm

Nonstop2h 50m

$123

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Sun 10/5

12:39 pm-1:36 pm

Nonstop2h 57m

San Diego

Wed 10/8

6:41 am-12:33 am

1 stop15h 52m

$124

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/22

2:00 pm-9:20 pm

1 stop9h 20m

San Diego

Fri 10/24

1:02 pm-6:12 pm

Nonstop3h 10m

$125

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 9/30

8:00 am-10:24 pm

1 stop16h 24m

San Diego

Fri 10/3

4:48 pm-9:49 pm

Nonstop3h 01m

$126

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/22

6:00 am-11:50 pm

1 stop19h 50m

San Diego

Fri 10/24

1:02 pm-6:12 pm

Nonstop3h 10m

$127

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 10/14

6:10 am-9:05 am

1 stop4h 55m

San Diego

Tue 10/21

6:45 pm-11:35 pm

Nonstop2h 50m

$128

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Thu 10/2

6:30 am-11:53 pm

1 stop19h 23m

San Diego

Mon 10/6

4:48 pm-9:49 pm

Nonstop3h 01m

$129

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Sun 10/19

2:23 pm-3:21 pm

Nonstop2h 58m

San Diego

Mon 10/20

8:11 am-9:15 pm

1 stop11h 04m

$130

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Tue 10/7

5:00 am-8:37 am

1 stop5h 37m

San Diego

Tue 10/14

4:20 pm-11:55 pm

1 stop5h 35m

$159

AustinSan Diego

AUS - SAN

AUSSAN

Austin Bergstrom

Wed 10/22

5:42 pm-10:24 pm

1 stop6h 42m

San Diego

Sat 10/25

12:40 pm-7:56 pm

1 stop5h 16m

$168

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Austin to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of August, then departing from Austin during the month November is also very affordable. Most momondo users find prices during this month for around $238.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Austin to San Diego is on a Friday. Travelers who choose to depart for San Diego on a Friday will often find tickets for as low as $280. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $411. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $218. Flights in the afternoon are often more expensive with an average ticket price of $391.

What is the cheapest Austin Bergstrom to San Diego flight route?

Fly from Austin Bergstrom to San Diego for the best Austin Bergstrom - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $285 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Austin for as low as $232 on momondo.

What cabin class options are available on Austin Bergstrom to San Diego flights?

There are 4 cabin classes available to choose from on Austin Bergstrom to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Austin to San Diego flights?

No. A direct flight is the cheapest option for a flight between Austin to San Diego.

How have Austin to San Diego flight prices changed over time?

As of September 2025, prices for Austin to San Diego flights are approximately 34% cheaper when compared to flights at the same time last year.

When to book flights from Austin to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Austin to San Diego (AUS to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to San Diego

Best Price Found

$98

Fastest flight time

2h 55m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Austin in the past 72 hours is $98. The best round-trip flight deal from Austin to San Diego found on momondo in the last 72 hours is $183.
The fastest flight from Austin to San Diego takes 2h 55m
Direct flights go from Austin to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • How far is Austin Bergstrom to San Diego by plane?

    There are 1153.4 mi between Austin Bergstrom and San Diego. 2h 57m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to San Diego Airport?

    Prices for flights from Austin Bergstrom Airport to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to San Diego Airport?

  • How old do you have to be to fly from Austin Bergstrom Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Austin Bergstrom Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Austin to San Diego?

  • What is the most popular airline from Austin to San Diego?

Best airlines flying from Austin to San Diego

Compare and see reviews for airlines that fly from Austin to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $71Free CancellationRating
6.3
8,016 reviews
Search Spirit Airlines flights
FrontierPriceFrom $104Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
DeltaPriceFrom $119Free CancellationRating
7.9
7,956 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $128Free CancellationRating
7.8
2,723 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $154Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
American AirlinesPriceFrom $198Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $226Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Austin to San Diego

    Across 14 Alaska Airlines flights from Austin to San Diego this week, the average price was $301, with the best Alaska Airlines deals starting from $154 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Southwest Flights From Austin to San Diego

    Southwest (8.0/10 from 4,245 reviews) operates around 24 flights from Austin to San Diego in any given week. The average Southwest airfare for this route is around $321, with deals from around $179 rare but found on momondo. Referenced prices are for round-trip Austin to San Diego flight searches in the last 72 hours.

Traveling to a place near San Diego?

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

Why use momondo?

Why should I use momondo to find a flight deal from Austin to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Austin to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Austin to San Diego with flexible booking policies on momondo?

Yes. All flights to San Diego from Austin on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Austin to San Diego?

Once you have performed a search for Austin to San Diego flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Austin to San Diego right now. Can momondo alert me if prices change?

Price alerts on flights to San Diego from Austin are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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