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Cheap flights from San Antonio to San Diego from $63

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 Antonio to San Diego departing on 1/6. 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

Enter your travel dates to find the best prices.
Frontier Logo
5:12 pm - 9:41 pm
SAT
-
SAN
6h 29m1 stop
Frontier Logo
8:35 am - 7:37 pm
SAN
-
SAT
9h 02m1 stop
$128Frontier
Wed, Feb 25 - Fri, Feb 27
Frontier Logo
3:55 pm - 11:16 pm
SAT
-
SAN
9h 21m1 stop
Frontier Logo
2:50 pm - 11:00 am
SAN
-
SAT
18h 10m1 stop
$134Frontier
Sat, Jan 10 - Sun, Jan 11
Frontier Logo
3:55 pm - 11:16 pm
SAT
-
SAN
9h 21m1 stop
Frontier Logo
6:25 am - 10:22 am
SAN
-
SAT
25h 57m1 stop
$141Frontier
Wed, Jan 7 - Sun, Jan 18
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
6:30 am - 7:33 pm
SAN
-
SAT
11h 03m1 stop
$151Frontier
Thu, Jan 22 - Mon, Jan 26
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
8:16 pm - 7:33 pm
SAN
-
SAT
21h 17m1 stop
$154Frontier
Thu, Feb 5 - Sun, Feb 8
Frontier Logo
12:31 pm - 12:08 am
SAT
-
SAN
13h 37m2 stops
Frontier Logo
11:49 am - 4:17 pm
SAN
-
SAT
26h 28m1 stop
$161Frontier
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
5:10 am - 12:38 pm
SAT
-
SAN
9h 28m1 stop
Multiple Airlines Logo
2:50 pm - 11:49 am
SAN
-
SAT
18h 59m1 stop
$172Multiple Airlines
Sat, Jan 3 - Thu, Jan 8
Frontier Logo
3:55 pm - 11:16 pm
SAT
-
SAN
9h 21m1 stop
Frontier Logo
10:53 am - 10:22 am
SAN
-
SAT
21h 29m2 stops
$173Frontier
Wed, Jan 7 - Sun, Jan 18
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
9:45 pm - 4:17 pm
SAN
-
SAT
40h 32m2 stops
$178Frontier
Thu, Feb 5 - Sun, Feb 8
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
9:45 pm - 4:17 pm
SAN
-
SAT
40h 32m2 stops
$179Frontier
Thu, Feb 5 - Sun, Feb 8

Alaska Airlines flights from San Antonio to San Diego

Our best Alaska Airlines deals on San Antonio to San Diego flight tickets
Alaska Airlines
Jan 9
SAT6:46 pmSan Antonio
28h 12m
1 stop
SAN8:58 pmSan Diego
Jan 16
SAN8:42 pmSan Diego
19h 03m
1 stop
SAT5:45 pmSan Antonio
$303
Find similar
Alaska Airlines
Jan 7
SAT6:25 amSan Antonio
12h 55m
1 stop
SAN5:20 pmSan Diego
Jan 14
SAN6:15 amSan Diego
9h 30m
1 stop
SAT5:45 pmSan Antonio
$304
Find similar

Frontier flights from San Antonio to San Diego

Our best Frontier deals on San Antonio to San Diego flight tickets
Frontier
Feb 25
SAT5:12 pmSan Antonio
6h 29m
1 stop
SAN9:41 pmSan Diego
Feb 27
SAN8:35 amSan Diego
9h 02m
1 stop
SAT7:37 pmSan Antonio
$128
Find similar
Frontier
Jan 10
SAT3:55 pmSan Antonio
9h 21m
1 stop
SAN11:16 pmSan Diego
Jan 11
SAN2:50 pmSan Diego
18h 10m
1 stop
SAT11:00 amSan Antonio
$134
Find similar
Frontier
Jan 7
SAT3:55 pmSan Antonio
9h 21m
1 stop
SAN11:16 pmSan Diego
Jan 18
SAN6:25 amSan Diego
25h 57m
1 stop
SAT10:22 amSan Antonio
$141
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio 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 December 11, 2025.
Use the filters below to find and compare flights from San Antonio to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 2/25

5:12 pm-9:41 pm

1 stop6h 29m

San Diego

Fri 2/27

8:35 am-7:37 pm

1 stop9h 02m

$128

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 1/10

3:55 pm-11:16 pm

1 stop9h 21m

San Diego

Sun 1/11

2:50 pm-11:00 am

1 stop18h 10m

$134

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 1/7

3:55 pm-11:16 pm

1 stop9h 21m

San Diego

Sun 1/18

6:25 am-10:22 am

1 stop25h 57m

$141

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 1/22

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Mon 1/26

6:30 am-7:33 pm

1 stop11h 03m

$151

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Sun 2/8

8:16 pm-7:33 pm

1 stop21h 17m

$154

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-12:08 am

2 stops13h 37m

San Diego

Mon 2/9

11:49 am-4:17 pm

1 stop26h 28m

$161

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 1/3

5:10 am-12:38 pm

1 stop9h 28m

San Diego

Thu 1/8

2:50 pm-11:49 am

1 stop18h 59m

$172

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 1/7

3:55 pm-11:16 pm

1 stop9h 21m

San Diego

Sun 1/18

10:53 am-10:22 am

2 stops21h 29m

$173

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Sun 2/8

9:45 pm-4:17 pm

2 stops40h 32m

$178

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Sun 2/8

9:45 pm-4:17 pm

2 stops40h 32m

$179

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 San Antonio 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 October, then departing from San Antonio during the month August is also very affordable. Most momondo users find prices during this month for around $329.

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

The cheapest day to depart from San Antonio to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $397. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $532. 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 afternoon when flights can be purchased for as low as $428. Flights in the morning are often more expensive with an average ticket price of $450.

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

Fly from San Antonio to San Diego for the best San Antonio - 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 San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $385 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from San Antonio for as low as $297 on momondo.

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

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

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

As of December 2025, prices for San Antonio to San Diego flights are approximately 74% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to San Diego

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

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

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

Best Price Found

$243

Fastest flight time

3h 00m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from San Antonio in the past 72 hours is $243. The best round-trip flight deal from San Antonio to San Diego found on momondo in the last 72 hours is $457.
The fastest flight from San Antonio to San Diego takes 3h 00m
Direct flights go from San Antonio to San Diego every day.
There is 1 airport in San Diego. From San Antonio there are direct flights to San Diego (SAN).
Search flight deals

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

    The straight-line distance from San Antonio to San Diego is 1125.3 mi. By plane, this route typically takes 3h 00m.

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

    Prices for flights from San Antonio Airport to San Diego Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio 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 San Antonio to San Diego?

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

Best airlines flying from San Antonio to San Diego

Compare and see reviews for airlines that fly from San Antonio to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $94Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
FrontierPriceFrom $125Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
American AirlinesPriceFrom $220Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $227Free CancellationRating
8.0
11,431 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,009 reviews
Search Delta flights
SouthwestPriceFrom $294Free CancellationRating
7.9
4,252 reviews
Search Southwest flights

  • Southwest Flights From San Antonio to San Diego

    Southwest flies from San Antonio to San Diego around 8 times per week, with 4,252 momondo users rating the airline 7.9/10. The cheapest Southwest deal from San Antonio to San Diego in the last 72 hours was $294 (round-trip), much lower than the average airfare cost of $447 for Southwest flights on this route.

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
National City
Imperial Beach
Poway
La Mesa
Borrego Springs
San Ysidro
Alpine
Lemon Grove
Santee

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from San Antonio.

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

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

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

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 Antonio to San Diego.

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

Price alerts on flights to San Diego from San Antonio 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.

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