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Cheap flights from San Diego to San Antonio from $54

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 2/18. 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

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Multiple Airlines Logo
8:10 pm - 7:00 pmSAN-SAT
20h 50m1 stop
Multiple Airlines Logo
6:10 pm - 12:11 pmSAT-SAN
20h 01m1 stop
$160Multiple Airlines
Find Deal
Thu, Dec 11 - Wed, Dec 17
Multiple Airlines Logo
6:34 am - 7:00 pmSAN-SAT
10h 26m1 stop
Multiple Airlines Logo
7:00 am - 12:11 pmSAT-SAN
31h 11m2 stops
$161Multiple Airlines
Find Deal
Fri, Dec 12 - Wed, Dec 17
Frontier Logo
6:25 am - 3:14 pmSAN-SAT
6h 49m1 stop
Frontier Logo
11:17 am - 7:36 pmSAT-SAN
10h 19m1 stop
$168Frontier
Find Deal
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
6:25 am - 12:17 amSAN-SAT
15h 52m1 stop
Frontier Logo
2:09 pm - 11:59 pmSAT-SAN
11h 50m1 stop
$174Frontier
Find Deal
Mon, Dec 22 - Wed, Dec 31
Multiple Airlines Logo
4:47 pm - 9:30 amSAN-SAT
14h 43m1 stop
Multiple Airlines Logo
6:10 pm - 7:15 pmSAT-SAN
27h 05m2 stops
$181Multiple Airlines
Find Deal
Sat, Dec 13 - Wed, Dec 17
Multiple Airlines Logo
6:34 am - 7:00 pmSAN-SAT
10h 26m1 stop
Multiple Airlines Logo
6:35 am - 12:38 pmSAT-SAN
32h 03m2 stops
$185Multiple Airlines
Find Deal
Fri, Dec 12 - Thu, Dec 18
Frontier Logo
4:47 pm - 12:17 amSAN-SAT
5h 30m1 stop
Frontier Logo
6:45 am - 9:57 amSAT-SAN
29h 12m2 stops
$192Frontier
Find Deal
Thu, Dec 25 - Mon, Dec 29
Multiple Airlines Logo
3:47 pm - 12:56 pmSAN-SAT
19h 09m1 stop
Multiple Airlines Logo
7:00 am - 8:07 pmSAT-SAN
15h 07m2 stops
$193Multiple Airlines
Find Deal
Thu, Dec 4 - Sat, Dec 6
Frontier Logo
6:25 am - 12:17 amSAN-SAT
15h 52m1 stop
Frontier Logo
6:45 am - 9:57 amSAT-SAN
29h 12m2 stops
$198Frontier
Find Deal
Sun, Dec 21 - Mon, Dec 29
Multiple Airlines Logo
6:25 am - 6:59 pmSAN-SAT
10h 34m2 stops
Multiple Airlines Logo
5:10 am - 12:38 pmSAT-SAN
9h 28m1 stop
$201Multiple Airlines
Find Deal
Tue, Dec 16 - Fri, Dec 19

Frontier flights from San Diego to San Antonio

Our best Frontier deals on San Diego to San Antonio flight tickets
Frontier
Jan 15
SAN6:25 amSan Diego
6h 49m
1 stop
SAT3:14 pmSan Antonio
Jan 19
SAT11:17 amSan Antonio
10h 19m
1 stop
SAN7:36 pmSan Diego
$168
Find similar
Frontier
Dec 22
SAN6:25 amSan Diego
15h 52m
1 stop
SAT12:17 amSan Antonio
Dec 31
SAT2:09 pmSan Antonio
11h 50m
1 stop
SAN11:59 pmSan Diego
$174
Find similar
Frontier
Dec 25
SAN4:47 pmSan Diego
5h 30m
1 stop
SAT12:17 amSan Antonio
Dec 29
SAT6:45 amSan Antonio
29h 12m
2 stops
SAN9:57 amSan Diego
$192
Find similar

Delta flights from San Diego to San Antonio

Our best Delta deals on San Diego to San Antonio flight tickets
Delta
Dec 3
SAN6:15 amSan Diego
7h 32m
1 stop
SAT3:47 pmSan Antonio
Dec 6
SAT3:30 pmSan Antonio
10h 05m
1 stop
SAN11:35 pmSan Diego
$469
Find similar
Delta
Dec 1
SAN4:07 pmSan Diego
6h 10m
1 stop
SAT12:17 amSan Antonio
Dec 5
SAT4:59 pmSan Antonio
7h 55m
1 stop
SAN10:54 pmSan Diego
$512
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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 November 20, 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 12/11

8:10 pm-7:00 pm

1 stop20h 50m

San Antonio

Wed 12/17

6:10 pm-12:11 pm

1 stop20h 01m

$160

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Fri 12/12

6:34 am-7:00 pm

1 stop10h 26m

San Antonio

Wed 12/17

7:00 am-12:11 pm

2 stops31h 11m

$161

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 1/15

6:25 am-3:14 pm

1 stop6h 49m

San Antonio

Mon 1/19

11:17 am-7:36 pm

1 stop10h 19m

$168

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Mon 12/22

6:25 am-12:17 am

1 stop15h 52m

San Antonio

Wed 12/31

2:09 pm-11:59 pm

1 stop11h 50m

$174

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sat 12/13

4:47 pm-9:30 am

1 stop14h 43m

San Antonio

Wed 12/17

6:10 pm-7:15 pm

2 stops27h 05m

$181

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Fri 12/12

6:34 am-7:00 pm

1 stop10h 26m

San Antonio

Thu 12/18

6:35 am-12:38 pm

2 stops32h 03m

$185

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 12/25

4:47 pm-12:17 am

1 stop5h 30m

San Antonio

Mon 12/29

6:45 am-9:57 am

2 stops29h 12m

$192

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Thu 12/4

3:47 pm-12:56 pm

1 stop19h 09m

San Antonio

Sat 12/6

7:00 am-8:07 pm

2 stops15h 07m

$193

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Sun 12/21

6:25 am-12:17 am

1 stop15h 52m

San Antonio

Mon 12/29

6:45 am-9:57 am

2 stops29h 12m

$198

San DiegoSan Antonio

SAN - SAT

SANSAT

San Diego

Tue 12/16

6:25 am-6:59 pm

2 stops10h 34m

San Antonio

Fri 12/19

5:10 am-12:38 pm

1 stop9h 28m

$201

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 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 $468.

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 $377. 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 $446. 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 $377 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 $283 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 November 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

$181

Fastest flight time

2h 35m

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 $181. The best round-trip flight deal from San Diego to San Antonio found on momondo in the last 72 hours is $435.
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 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 5h 30m.

  • 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
9,029 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $119Free CancellationRating
6.3
8,156 reviews
Search Spirit Airlines flights
FrontierPriceFrom $143Free CancellationRating
5.8
3,106 reviews
Search Frontier flights
American AirlinesPriceFrom $238Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
8,002 reviews
Search Delta flights
SouthwestPriceFrom $297Free CancellationRating
8.0
4,249 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 8 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
Boerne
Kerrville
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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