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Cheap flights from San Diego to San Antonio 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 San Diego to San Antonio departing on 9/20. 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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0 bags

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Find the cheapest flights from San Diego to San Antonio

Cheap round-trip flights

Spirit Airlines Logo
8:25 am - 8:52 pmSAN-SAT
10h 27m1 stop
Spirit Airlines Logo
5:42 pm - 11:34 pmSAT-SAN
7h 52m1 stop
$112Spirit Airlines
Find Deal
Thu, Sep 4 - Sun, Sep 7
Spirit Airlines Logo
6:15 am - 4:47 pmSAN-SAT
8h 32m1 stop
Spirit Airlines Logo
9:47 pm - 7:29 amSAT-SAN
11h 42m1 stop
$122Spirit Airlines
Find Deal
Fri, Sep 5 - Wed, Sep 10
Logo
1:35 pm - 8:52 pmSAN-SAT
5h 17m1 stop
Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
$129
Find Deal
Sat, Sep 6 - Fri, Sep 12
Logo
7:47 pm - 1:23 pmSAN-SAT
15h 36m1 stop
Logo
9:33 pm - 7:29 amSAT-SAN
11h 56m1 stop
$134
Find Deal
Wed, Sep 17 - Sun, Sep 21
Logo
7:47 pm - 1:23 pmSAN-SAT
15h 36m1 stop
Logo
9:33 pm - 7:29 amSAT-SAN
11h 56m1 stop
$135
Find Deal
Wed, Sep 17 - Sun, Sep 21
Spirit Airlines Logo
8:25 am - 8:52 pmSAN-SAT
10h 27m1 stop
Spirit Airlines Logo
8:37 pm - 6:42 pmSAT-SAN
24h 05m2 stops
$137Spirit Airlines
Find Deal
Thu, Sep 4 - Sun, Sep 7
Frontier Logo
10:20 am - 7:15 pmSAN-SAT
6h 55m1 stop
Frontier Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
$144Frontier
Find Deal
Fri, Sep 12 - Mon, Sep 15
Frontier Logo
6:41 am - 3:14 pmSAN-SAT
6h 33m1 stop
Frontier Logo
3:59 pm - 11:50 pmSAT-SAN
9h 51m1 stop
$145Frontier
Find Deal
Tue, Oct 7 - Wed, Oct 15
Spirit Airlines Logo
6:15 am - 8:52 pmSAN-SAT
12h 37m1 stop
Spirit Airlines Logo
9:47 pm - 7:29 amSAT-SAN
11h 42m1 stop
$146Spirit Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
Frontier Logo
12:33 pm - 3:50 pmSAN-SAT
25h 17m1 stop
Frontier Logo
8:20 pm - 11:09 amSAT-SAN
16h 49m1 stop
$147Frontier
Find Deal
Fri, Sep 5 - Sun, Sep 7

Spirit Airlines flights from San Diego to San Antonio

Our best Spirit Airlines deals on San Diego to San Antonio flight tickets
Spirit Airlines
Sep 4
SAN8:25 amSan Diego
10h 27m
1 stop
SAT8:52 pmSan Antonio
Sep 7
SAT5:42 pmSan Antonio
7h 52m
1 stop
SAN11:34 pmSan Diego
$112
Find similar
Spirit Airlines
Sep 5
SAN6:15 amSan Diego
8h 32m
1 stop
SAT4:47 pmSan Antonio
Sep 10
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
$122
Find similar
Spirit Airlines
Sep 4
SAN8:25 amSan Diego
10h 27m
1 stop
SAT8:52 pmSan Antonio
Sep 7
SAT8:37 pmSan Antonio
24h 05m
2 stops
SAN6:42 pmSan Diego
$137
Find similar

Frontier flights from San Diego to San Antonio

Our best Frontier deals on San Diego to San Antonio flight tickets
Frontier
Sep 12
SAN10:20 amSan Diego
6h 55m
1 stop
SAT7:15 pmSan Antonio
Sep 15
SAT8:20 pmSan Antonio
5h 33m
1 stop
SAN11:53 pmSan Diego
$144
Find similar
Frontier
Oct 7
SAN6:41 amSan Diego
6h 33m
1 stop
SAT3:14 pmSan Antonio
Oct 15
SAT3:59 pmSan Antonio
9h 51m
1 stop
SAN11:50 pmSan Diego
$145
Find similar
Frontier
Sep 5
SAN12:33 pmSan Diego
25h 17m
1 stop
SAT3:50 pmSan Antonio
Sep 7
SAT8:20 pmSan Antonio
16h 49m
1 stop
SAN11:09 amSan Diego
$147
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to San Antonio 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 August 18, 2025.
Use the filters below to find and compare flights from San Diego to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 9/4

8:25 am-8:52 pm

1 stop10h 27m

San Antonio

Sun 9/7

5:42 pm-11:34 pm

1 stop7h 52m

$112

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Fri 9/5

6:15 am-4:47 pm

1 stop8h 32m

San Antonio

Wed 9/10

9:47 pm-7:29 am

1 stop11h 42m

$122

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sat 9/6

1:35 pm-8:52 pm

1 stop5h 17m

San Antonio

Fri 9/12

8:20 pm-11:53 pm

1 stop5h 33m

$129

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Wed 9/17

7:47 pm-1:23 pm

1 stop15h 36m

San Antonio

Sun 9/21

9:33 pm-7:29 am

1 stop11h 56m

$134

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Wed 9/17

7:47 pm-1:23 pm

1 stop15h 36m

San Antonio

Sun 9/21

9:33 pm-7:29 am

1 stop11h 56m

$135

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 9/4

8:25 am-8:52 pm

1 stop10h 27m

San Antonio

Sun 9/7

8:37 pm-6:42 pm

2 stops24h 05m

$137

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Fri 9/12

10:20 am-7:15 pm

1 stop6h 55m

San Antonio

Mon 9/15

8:20 pm-11:53 pm

1 stop5h 33m

$144

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Tue 10/7

6:41 am-3:14 pm

1 stop6h 33m

San Antonio

Wed 10/15

3:59 pm-11:50 pm

1 stop9h 51m

$145

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sat 9/6

6:15 am-8:52 pm

1 stop12h 37m

San Antonio

Wed 9/10

9:47 pm-7:29 am

1 stop11h 42m

$146

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Fri 9/5

12:33 pm-3:50 pm

1 stop25h 17m

San Antonio

Sun 9/7

8:20 pm-11:09 am

1 stop16h 49m

$147

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 Antonio from

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

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 Antonio?

If you aren’t able to travel during the month of September, then book flights to San Antonio from San Diego during August instead. Flights to San Antonio in August, while not as cheap as those in September, still average around $322.

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

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $385. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $466.

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

According to our data, the cheapest time of day to fly to San Antonio is at noon. momondo users have found flights departing from San Diego to San Antonio at noon for as low as $370. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $445. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest San Diego to San Antonio flight route?

Fly from San Diego to San Antonio for the best San Diego - San Antonio flight prices

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

You are more likely to see cheaper flights to San Antonio from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $388 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from San Diego for as low as $256 on momondo.

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

There are 1 cabin classes available to choose from on San Diego to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of August 2025, prices for San Diego to San Antonio flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to San Antonio

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

Cheap San Diego to San Antonio (SAN to SAT) flight deals and tips

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

Best Price Found

$71

Fastest flight time

2h 45m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from San Diego in the past 72 hours is $71. The best round-trip flight deal from San Diego to San Antonio found on momondo in the last 72 hours is $112.
The fastest flight from San Diego to San Antonio takes 2h 45m
Direct flights go from San Diego to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
Search flight deals

  • How far is San Diego to San Antonio by plane?

    San Antonio is 1125.3 mi away from San Diego. In terms of flight time, this usually takes a little over 4h 58m.

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

    Prices for flights from San Diego Airport to San Antonio Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to San Antonio Airport.

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

    The required travel and health documents for your San Antonio 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 Antonio 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 San Diego to San Antonio?

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

Best airlines flying from San Diego to San Antonio

Compare and see reviews for airlines that fly from San Diego to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $106Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
FrontierPriceFrom $118Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $252Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
8.0
7,981 reviews
Search Delta flights
SouthwestPriceFrom $305Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

  • Southwest Flights From San Diego to San Antonio

    Southwest flight deals from San Diego to San Antonio start from $305 round-trip. Over the 9 Southwest flights for this route in a normal week, average airfare is usually $440 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Schertz
Pleasanton

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Diego to San Antonio for you.

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

All flight searches from San Diego to San Antonio on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Diego to San Antonio.

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

If you are simply researching potential flights to San Antonio, momondo offers a useful price alert feature which will track prices for flights to San Antonio from San Diego and alert you when they change.

An easier way to manage your San Antonio trip

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