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Cheap flights from San Diego to San Antonio from $56

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 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from San Diego to San Antonio

Cheap round-trip flights

Multiple Airlines Logo
6:15 am - 4:47 pmSAN-SAT
8h 32m1 stop
Multiple Airlines Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
$128Multiple Airlines
Find Deal
lun., sep. 29 - dom., oct. 5
Multiple Airlines Logo
6:25 am - 1:23 pmSAN-SAT
4h 58m1 stop
Multiple Airlines Logo
9:47 pm - 7:29 amSAT-SAN
11h 42m1 stop
$134Multiple Airlines
Find Deal
jue., sep. 25 - dom., sep. 28
Multiple Airlines Logo
1:35 pm - 8:52 pmSAN-SAT
5h 17m1 stop
Multiple Airlines Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
$136Multiple Airlines
Find Deal
vie., oct. 3 - dom., oct. 5
Frontier Logo
6:25 am - 1:23 pmSAN-SAT
4h 58m1 stop
Frontier Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
$143Frontier
Find Deal
jue., sep. 25 - lun., sep. 29
Frontier Logo
6:41 am - 7:48 pmSAN-SAT
11h 07m1 stop
Frontier Logo
10:04 am - 4:40 pmSAT-SAN
8h 36m1 stop
$144Frontier
Find Deal
jue., oct. 30 - lun., nov. 3
United Airlines Logo
8:45 am - 4:54 pmSAN-SAT
6h 09m1 stop
United Airlines Logo
4:14 pm - 7:56 pmSAT-SAN
5h 42m1 stop
$151United Airlines
Find Deal
mié., dic. 10 - lun., dic. 15
United Airlines Logo
11:02 am - 8:53 pmSAN-SAT
7h 51m2 stops
United Airlines Logo
4:14 pm - 7:56 pmSAT-SAN
5h 42m1 stop
$156United Airlines
Find Deal
mié., dic. 10 - lun., dic. 15
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
$158Spirit Airlines
Find Deal
lun., sep. 29 - mié., oct. 1
American Airlines Logo
10:02 am - 7:39 pmSAN-SAT
7h 37m1 stop
American Airlines Logo
5:00 am - 8:34 amSAT-SAN
5h 34m1 stop
$159American Airlines
Find Deal
mié., oct. 29 - mié., nov. 5
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
$195Spirit Airlines
Find Deal
sáb., sep. 20 - dom., sep. 21

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 29
SAN6:15 amSan Diego
8h 32m
1 stop
SAT4:47 pmSan Antonio
Oct 1
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
$158
Find similar
Spirit Airlines
Sep 20
SAN6:15 amSan Diego
12h 37m
1 stop
SAT8:52 pmSan Antonio
Sep 21
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
$195
Find similar
Spirit Airlines
Sep 25
SAN8:25 amSan Diego
6h 22m
1 stop
SAT4:47 pmSan Antonio
Sep 30
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
$251
Find similar

United Airlines flights from San Diego to San Antonio

Our best United Airlines deals on San Diego to San Antonio flight tickets
United Airlines
Dec 10
SAN8:45 amSan Diego
6h 09m
1 stop
SAT4:54 pmSan Antonio
Dec 15
SAT4:14 pmSan Antonio
5h 42m
1 stop
SAN7:56 pmSan Diego
$151
Find similar
United Airlines
Dec 10
SAN11:02 amSan Diego
7h 51m
2 stops
SAT8:53 pmSan Antonio
Dec 15
SAT4:14 pmSan Antonio
5h 42m
1 stop
SAN7:56 pmSan Diego
$156
Find similar
United Airlines
Oct 29
SAN6:45 amSan Diego
8h 13m
1 stop
SAT4:58 pmSan Antonio
Nov 2
SAT6:00 pmSan Antonio
5h 53m
1 stop
SAN9:53 pmSan Diego
$212
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 septiembre 17, 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

lun. 9/29

6:15 am-4:47 pm

1 stop8h 32m

San Antonio

dom. 10/5

8:20 pm-11:53 pm

1 stop5h 33m

$128

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

jue. 9/25

6:25 am-1:23 pm

1 stop4h 58m

San Antonio

dom. 9/28

9:47 pm-7:29 am

1 stop11h 42m

$134

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

vie. 10/3

1:35 pm-8:52 pm

1 stop5h 17m

San Antonio

dom. 10/5

8:20 pm-11:53 pm

1 stop5h 33m

$136

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

jue. 9/25

6:25 am-1:23 pm

1 stop4h 58m

San Antonio

lun. 9/29

8:20 pm-11:53 pm

1 stop5h 33m

$143

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

jue. 10/30

6:41 am-7:48 pm

1 stop11h 07m

San Antonio

lun. 11/3

10:04 am-4:40 pm

1 stop8h 36m

$144

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

mié. 12/10

8:45 am-4:54 pm

1 stop6h 09m

San Antonio

lun. 12/15

4:14 pm-7:56 pm

1 stop5h 42m

$151

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

mié. 12/10

11:02 am-8:53 pm

2 stops7h 51m

San Antonio

lun. 12/15

4:14 pm-7:56 pm

1 stop5h 42m

$156

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

lun. 9/29

6:15 am-4:47 pm

1 stop8h 32m

San Antonio

mié. 10/1

9:47 pm-7:29 am

1 stop11h 42m

$158

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

mié. 10/29

10:02 am-7:39 pm

1 stop7h 37m

San Antonio

mié. 11/5

5:00 am-8:34 am

1 stop5h 34m

$159

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

sáb. 9/20

6:15 am-8:52 pm

1 stop12h 37m

San Antonio

dom. 9/21

9:47 pm-7:29 am

1 stop11h 42m

$195

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 August, then book flights to San Antonio from San Diego during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $326.

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 $372. 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 $467.

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 afternoon. momondo users have found flights departing from San Diego to San Antonio in the afternoon for as low as $407. 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 $436. 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 $387 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 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 September 2025, prices for San Diego to San Antonio flights are approximately 32% 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

$131

Fastest flight time

2h 40m

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 $131. The best round-trip flight deal from San Diego to San Antonio found on momondo in the last 72 hours is $337.
The fastest flight from San Diego to San Antonio takes 2h 40m
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 54m.

  • 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
FrontierPriceFrom $118Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $126Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $238Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $252Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,961 reviews
Search Delta flights
SouthwestPriceFrom $297Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

  • Southwest Flights From San Diego to San Antonio

    Southwest flight deals from San Diego to San Antonio start from $297 round-trip. Over the 10 Southwest flights for this route in a normal week, average airfare is usually $444 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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