Cheap flights from San Diego, CA to San Antonio, TX

Flights starting at $70. Choose between American Airlines, Spirit Airlines, or Frontier Airlines to find the best price.

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Travelers usually depart from San Diego International, San Diego, CA - La Jolla, San Diego, CA - Seaport Village, San Diego, CA - Old Town, or San Diego-SDSU Transit Center when they travel from San Diego to San Antonio. Book your trip to arrive at San Antonio International, San Antonio, or San Antonio-Pearl. The most popular airlines for this route are American Airlines, Spirit Airlines, Frontier Airlines, United Airlines, and Alaska Airlines. San Diego and San Antonio have 326 direct flights per week.

Check-in for a flight from San Diego to San Antonio

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
American AirlinesAALAANoNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight

Weather in San Antonio

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January17°C7°C
February19°C8°C
March23°C12°C
April27°C16°C
May30°C19°C
June34°C23°C
July35°C24°C
August36°C25°C
September32°C22°C
October28°C17°C
November21°C12°C
December18°C9°C
Hottest Month
36°C
August
Coldest month
7°C
January
Sunny days
300
days per year

14 day forecast

Sunday
18 Feb
13°C2°C
25 Feb
24°C12°C
Monday
19 Feb
19°C5°C
26 Feb
27°C16°C
Tuesday
20 Feb
24°C10°C
27 Feb
29°C18°C
Wednesday
21 Feb
25°C13°C
28 Feb
72%
29°C19°C
Thursday
22 Feb
28°C16°C
29 Feb
84%
14°C11°C
Friday
23 Feb
22°C13°C
1 Mar
13°C11°C
Saturday
24 Feb
23°C12°C
2 Mar
17°C8°C

Frequently asked questions

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What time do flights between San Diego and San Antonio depart?
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