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Cheap flights from San Diego to San Antonio from $64

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 2/25. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:25 am - 7:30 pm
SAN
-
SAT
11h 05m
1 stop
Frontier Logo
8:22 pm - 12:08 am
SAT
-
SAN
5h 46m
1 stop
$148Frontier
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
6:25 am - 7:01 pm
SAN
-
SAT
10h 36m
1 stop
Frontier Logo
6:12 pm - 11:14 am
SAT
-
SAN
19h 02m
1 stop
$154Frontier
Sat, Feb 21 - Wed, Feb 25
Frontier Logo
6:25 am - 7:01 pm
SAN
-
SAT
10h 36m
1 stop
Frontier Logo
6:12 pm - 11:14 am
SAT
-
SAN
19h 02m
1 stop
$163Frontier
Sat, Feb 21 - Wed, Feb 25
Frontier Logo
6:25 am - 7:30 pm
SAN
-
SAT
11h 05m
1 stop
Frontier Logo
8:25 pm - 12:08 am
SAT
-
SAN
5h 43m
1 stop
$164Frontier
Thu, Feb 12 - Thu, Feb 19
Frontier Logo
6:25 am - 12:19 am
SAN
-
SAT
15h 54m
1 stop
Frontier Logo
6:45 am - 12:02 am
SAT
-
SAN
19h 17m
1 stop
$166Frontier
Wed, Apr 1 - Fri, Apr 3
Frontier Logo
2:38 pm - 9:58 am
SAN
-
SAT
17h 20m
1 stop
Frontier Logo
11:35 am - 1:05 pm
SAT
-
SAN
27h 30m
1 stop
$171Frontier
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
2:38 pm - 10:40 am
SAN
-
SAT
18h 02m
1 stop
Frontier Logo
6:45 am - 12:08 am
SAT
-
SAN
19h 23m
1 stop
$174Frontier
Thu, Mar 5 - Tue, Mar 10
Frontier Logo
7:11 am - 5:15 pm
SAN
-
SAT
8h 04m
1 stop
Frontier Logo
8:25 pm - 12:08 am
SAT
-
SAN
5h 43m
1 stop
$175Frontier
Wed, Feb 18 - Thu, Feb 19
Frontier Logo
2:38 pm - 10:40 am
SAN
-
SAT
18h 02m
1 stop
Frontier Logo
6:45 am - 9:14 pm
SAT
-
SAN
16h 29m
1 stop
$176Frontier
Thu, Mar 5 - Tue, Mar 10
Frontier Logo
8:20 pm - 8:45 am
SAN
-
SAT
10h 25m
1 stop
Frontier Logo
6:12 pm - 11:14 am
SAT
-
SAN
19h 02m
1 stop
$177Frontier
Sun, Mar 1 - Wed, Mar 4

Frontier flights from San Diego to San Antonio

Our best Frontier deals on San Diego to San Antonio flight tickets
Frontier
Feb 19
SAN11:59 amSan Diego
5h 31m
1 stop
SAT7:30 pmSan Antonio
Feb 23
SAT9:20 amSan Antonio
8h 44m
1 stop
SAN4:04 pmSan Diego
$148
Frontier
Feb 21
SAN6:25 amSan Diego
10h 36m
1 stop
SAT7:01 pmSan Antonio
Feb 28
SAT7:56 pmSan Antonio
6h 12m
1 stop
SAN12:08 amSan Diego
$154
Frontier
Feb 21
SAN6:25 amSan Diego
10h 36m
1 stop
SAT7:01 pmSan Antonio
Feb 25
SAT6:12 pmSan Antonio
19h 02m
1 stop
SAN11:14 amSan Diego
$163

United Airlines flights from San Diego to San Antonio

Our best United Airlines deals on San Diego to San Antonio flight tickets
United Airlines
Feb 8
SAN11:08 amSan Diego
7h 36m
2 stops
SAT8:44 pmSan Antonio
Feb 15
SAT5:58 pmSan Antonio
6h 02m
1 stop
SAN10:00 pmSan Diego
$434
United Airlines
Jan 26
SAN8:00 amSan Diego
5h 31m
1 stop
SAT3:31 pmSan Antonio
Feb 2
SAT5:59 pmSan Antonio
7h 43m
2 stops
SAN11:42 pmSan Diego
$476
United Airlines
Feb 8
SAN1:51 pmSan Diego
5h 30m
1 stop
SAT9:21 pmSan Antonio
Feb 15
SAT2:10 pmSan Antonio
11h 30m
2 stops
SAN11:40 pmSan Diego
$514

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 January 26, 2026.
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 2/19

6:25 am-7:30 pm

1 stop11h 05m

San Antonio

Mon 2/23

8:22 pm-12:08 am

1 stop5h 46m

$148

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sat 2/21

6:25 am-7:01 pm

1 stop10h 36m

San Antonio

Wed 2/25

6:12 pm-11:14 am

1 stop19h 02m

$154

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sat 2/21

6:25 am-7:01 pm

1 stop10h 36m

San Antonio

Wed 2/25

6:12 pm-11:14 am

1 stop19h 02m

$163

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 2/12

6:25 am-7:30 pm

1 stop11h 05m

San Antonio

Thu 2/19

8:25 pm-12:08 am

1 stop5h 43m

$164

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Wed 4/1

6:25 am-12:19 am

1 stop15h 54m

San Antonio

Fri 4/3

6:45 am-12:02 am

1 stop19h 17m

$166

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 2/26

2:38 pm-9:58 am

1 stop17h 20m

San Antonio

Sun 3/1

11:35 am-1:05 pm

1 stop27h 30m

$171

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 3/5

2:38 pm-10:40 am

1 stop18h 02m

San Antonio

Tue 3/10

6:45 am-12:08 am

1 stop19h 23m

$174

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Wed 2/18

7:11 am-5:15 pm

1 stop8h 04m

San Antonio

Thu 2/19

8:25 pm-12:08 am

1 stop5h 43m

$175

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 3/5

2:38 pm-10:40 am

1 stop18h 02m

San Antonio

Tue 3/10

6:45 am-9:14 pm

1 stop16h 29m

$176

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sun 3/1

8:20 pm-8:45 am

1 stop10h 25m

San Antonio

Wed 3/4

6:12 pm-11:14 am

1 stop19h 02m

$177

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 October, 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 October, still average around $299.

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 Wednesday when prices can be found for as low as $418. 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 $487.

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 in the evening. momondo users have found flights departing from San Diego to San Antonio in the evening for as low as $418. 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 afternoon, with an average ticket price of $447. Departure times in the afternoon 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 $382 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 $304 on momondo.

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

There is only 1 cabin class 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 January 2026, prices for San Diego to San Antonio flights are approximately 46% 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

$440

Fastest flight time

2h 35m

Direct flights

Every day

Airports in San Antonio

1 airport
The best flight deal from San Diego to San Antonio found on momondo in the last 72 hours is $440
The fastest flight from San Diego to San Antonio takes 2h 35m
Direct flights go from San Diego to San Antonio every day.
There is 1 airport in San Antonio. From San Diego there are direct flights to 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 2h 35m.

  • 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
United AirlinesPriceFrom $100Free CancellationRating
7.4
9,198 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $116Free CancellationRating
6.3
8,375 reviews
Search Spirit Airlines flights
FrontierPriceFrom $125Free CancellationRating
5.7
3,058 reviews
Search Frontier flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,192 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,113 reviews
Search Delta flights
SouthwestPriceFrom $286Free CancellationRating
8.0
4,269 reviews
Search Southwest flights

  • Southwest Flights From San Diego to San Antonio

    Southwest flight deals from San Diego to San Antonio start from $286 round-trip. Over the 2 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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