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

Make your travel wishlist, we'll do the rest
Hidden deals
Effortless booking
Travel hacking

Tips to know when travelling to San Diego

Book your trip to arrive at San Diego International, or McClellan–Palomar. The most popular airline for this route is United Airlines. San Antonio and San Diego have 40 direct flights per week.

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

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUAYes

Weather in San Diego

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C10°C
February17°C10°C
March18°C11°C
April19°C12°C
May20°C14°C
June22°C16°C
July24°C18°C
August25°C19°C
September25°C19°C
October23°C16°C
November21°C13°C
December17°C11°C
Hottest Month
25°C
August
Coldest month
10°C
February
Sunny days
345
days per year

14 day forecast

Tuesday
16 Jul
23°C19°C
23 Jul
25°C21°C
Wednesday
17 Jul
86%
24°C19°C
24 Jul
25°C21°C
Thursday
18 Jul
88%
25°C19°C
25 Jul
25°C21°C
Friday
19 Jul
85%
26°C21°C
26 Jul
24°C20°C
Saturday
20 Jul
27°C21°C
27 Jul
23°C19°C
Sunday
21 Jul
25°C20°C
28 Jul
23°C19°C
Monday
22 Jul
25°C20°C
29 Jul
23°C19°C

Frequently asked questions

What are the most popular routes to and from San Antonio?
What are the most popular routes to and from San Diego?
What airports are near San Antonio?
What airports are near San Diego?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between San Antonio and San Diego?
What is Virtual Interlining and how do I use it?
Which airlines fly between San Antonio and San Diego?
When's the best time to travel between San Antonio and San Diego?
What flights operate between San Antonio and San Diego?
How many airports are there near San Antonio?
How many airports are there near San Diego?
What time do nonstop (direct) flights between San Antonio and San Diego depart?
What time do nonstop (direct) flights between San Antonio and San Diego arrive?
What time do flights between San Antonio and San Diego depart?
What time do flights between San Antonio and San Diego arrive?

Explore alternative trips

Flights from San Antonio

Flights to San Diego

Popular routes

The nearest countries with flights to San Diego

Here is a list of countries people are flying from

Other destination countries from San Antonio

Here is a list of countries people are flying to
Find the best connection from San Antonio to San Diego
Search flights, trains & buses
We hack the system,
you fly for less