Cheap flights from San Antonio to San Diego 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 Antonio to San Diego departing on 9/23. 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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Spirit Airlines flights from San Antonio to San Diego
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Southwest flights from San Antonio to San Diego
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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 August, then departing from San Antonio during the month September is also very affordable. Most momondo users find prices during this month for around $304.
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 $487. 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 $430. Flights in the morning are often more expensive with an average ticket price of $447.
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 $371 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 $286 on momondo.
What cabin class options are available on San Antonio to San Diego flights?
There are 1 cabin classes 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.
What is the cheapest airline that flies from San Antonio to San Diego?
Spirit Airlines, American Airlines, and Frontier are the most popular carriers operating from San Antonio to San Diego
What airlines fly to San Diego?
Southwest, American Airlines and Alaska Airlines are the top three most popular airlines that fly to San Diego from San Antonio according to our data. Southwest is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 9 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Antonio to San Diego on average per day?
1 flights are operational daily from San Antonio to San Diego as of July 2025. The most popular departure time for this route is 7:00AM, with 40% of flights per day taking off at noon.
How many flights depart from San Antonio to San Diego on average per week?
As of July 2025, 13 flights take off from San Antonio and land in San Diego each week. The most common flight departure day for this route is Mon, with 23% of weekly flights taking off on this day.
When to book flights from San Antonio to San Diego
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
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 2h 50m.
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?
As of July 2025, there are 7 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from San Antonio to San Diego is Boeing 737-700 Passenger/BBJ1 (winglets), representing 55.70% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 20.13%, Boeing 737 MAX 8 at 6.71%, and Embraer 175 at 3.36%.
What is the most popular airline from San Antonio to San Diego?
Based on momondo bookings for flights between San Antonio and San Diego, the leading airline is Southwest, making up 40% of the total bookings. Other popular airlines include Spirit Airlines with 20%, American Airlines with 19%, and Frontier with 10%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $108 | Free Cancellation | Rating 6.3 8,063 reviews | |||
| PriceFrom $112 | Free Cancellation | Rating 5.9 3,273 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 7,958 reviews | |||
| PriceFrom $294 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom $315 | Free Cancellation | Rating 8.0 4,256 reviews |
Southwest Flights From San Antonio to San Diego
Southwest flies from San Antonio to San Diego around 13 times per week, with 4,256 momondo users rating the airline 8.0/10. The cheapest Southwest deal from San Antonio to San Diego in the last 72 hours was $315 (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 locationsWhy 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.