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$115 Cheap Flights from San Antonio (SAT) to San Diego (SAN)

View $115 flight on Wed, Nov 11, 2026Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to San Diego Intl. Airport (SAN)

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Cheap Flights from San Antonio to San Diego (SAT-SAN)

Prices were available within the past 7 days and start at $115 for one-way flights and $240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Oct 30 - Mon, Nov 2
SAT
San Antonio
SAN
San Diego
$240 Roundtrip, found 2 days ago
$240
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Oct 30 from San Antonio to San Diego, returning Mon, Nov 2, priced at $240 found 2 days ago
Frontier Airlines
Thu, Nov 5 - Fri, Nov 6
SAT
San Antonio
SAN
San Diego
$244 Roundtrip, found 9 hours ago
$244
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Nov 5 from San Antonio to San Diego, returning Fri, Nov 6, priced at $244 found 9 hours ago
Frontier Airlines
Sat, Oct 31 - Mon, Nov 2
SAT
San Antonio
SAN
San Diego
$258 Roundtrip, found 3 hours ago
$258
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Oct 31 from San Antonio to San Diego, returning Mon, Nov 2, priced at $258 found 3 hours ago
Frontier Airlines
Thu, Nov 5 - Fri, Nov 6
SAT
San Antonio
SAN
San Diego
$264 Roundtrip, found 9 hours ago
$264
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Nov 5 from San Antonio to San Diego, returning Fri, Nov 6, priced at $264 found 9 hours ago
Frontier Airlines
Sat, Oct 3 - Sat, Oct 10
SAT
San Antonio
SAN
San Diego
$268 Roundtrip, just found
$268
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 3 from San Antonio to San Diego, returning Sat, Oct 10, priced at $268 just found
Frontier Airlines
Tue, Sep 22 - Wed, Sep 30
SAT
San Antonio
SAN
San Diego
$269 Roundtrip, found 4 hours ago
$269
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Sep 22 from San Antonio to San Diego, returning Wed, Sep 30, priced at $269 found 4 hours ago
Frontier Airlines
Sat, Sep 19 - Mon, Sep 21
SAT
San Antonio
SAN
San Diego
$270 Roundtrip, found 4 hours ago
$270
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Sep 19 from San Antonio to San Diego, returning Mon, Sep 21, priced at $270 found 4 hours ago
Southwest Airlines
Wed, Feb 17 - Thu, Feb 25
SAT
San Antonio
SAN
San Diego
$398 Roundtrip, found 4 hours ago
$398
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Wed, Feb 17 from San Antonio to San Diego, returning Thu, Feb 25, priced at $398 found 4 hours ago
Delta
Sat, Dec 12 - Wed, Dec 16
SAT
San Antonio
SAN
San Diego
$427 Roundtrip, just found
$427
Roundtrip
just found
Select Delta flight, departing Sat, Dec 12 from San Antonio to San Diego, returning Wed, Dec 16, priced at $427 just found
Alaska Airlines
Tue, Nov 3 - Wed, Nov 4
SAT
San Antonio
SAN
San Diego
$480 Roundtrip, just found
$480
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Nov 3 from San Antonio to San Diego, returning Wed, Nov 4, priced at $480 just found

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McClellan-Palomar CLD. Average driving time to city center is 38 minutes. Flights from $354
CLD
McClellan-Palomar
Average driving time to city center38 min
Flights from $354

What you need to know for your flight from San Antonio Intl. to San Diego Intl.

San Antonio (SAT) to San Diego (SAN) at a glance

Travel from San Antonio (SAT) to San Diego (SAN) with a range of airlines catering to this domestic short-haul route. Whether you prefer full-service options or budget-friendly carriers, you can compare flights to find the best fit for your travel plans, schedule, and budget. As you prepare to explore San Diego's iconic sights and vibrant neighborhoods, gather all the essential details for your journey from San Antonio International Airport to San Diego International Airport.

  • Fastest flight duration: around 3 hours non-stop
  • Route distance: roughly 1,100 miles (1,770 km)
  • Flights per week: around 30+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $95–$415, depending on seasonality and how far ahead you book

Flights from San Antonio International Airport (SAT) to San Diego International Airport (SAN)

Based on the latest traveler bookings, we've identified the top airlines flying from San Antonio to San Diego, favored for both non-stop and one-stop options. Popular layover locations include Sky Harbor International Airport, PHX (approximately 1-hour layover), Dallas-Fort Worth International Airport, DFW (around 1-hour layover), and Denver International Airport, DEN (about 1 hour and 15 minutes layover). These choices allow you to balance price, total travel time, and cabin class, helping you secure the ideal itinerary for your journey.

  • American Airlines: This full-service airline provides one-stop flights, with one-way prices generally falling between $110 and $410. It makes up about 38% of departures on this route, featuring an in-air time of 4 hours and 15 minutes, and a total travel duration of approximately 5 hours and 30 minutes, including layovers.
  • Southwest Airlines: A budget-friendly airline, Southwest offers both non-stop and one-stop options, with one-way fares usually ranging from $120 to $510. It represents around 31% of flights on this route, with direct journeys typically taking about 3 hours.
  • United: This full-service carrier provides one-stop services with one-way fares typically between $115 and $475. United accounts for roughly 11% of the departures along this route, featuring a flight duration of 4 hours and 15 minutes, and a total travel time of about 5 hours and 30 minutes, including layovers.
  • Frontier Airlines: As a low-cost option, Frontier offers one-stop services with one-way fares ranging from $95 to $230. It represents around 10% of the route's departures, with an in-flight time of 4 hours and 15 minutes, leading to a total journey time of approximately 5 hours and 30 minutes, including layovers.
  • Delta: This full-service airline provides one-stop services, with one-way fares typically priced between $120 and $395. Delta makes up about 9% of departures on this route, with a flight duration of 4 hours and 15 minutes, and a total travel time of around 5 hours and 30 minutes, including layovers.

Travelers flying from San Antonio to San Diego have the option to upgrade their experience. American Airlines offers first-class service, while Delta provides both first-class and premium economy service for added comfort.

Best time to fly from San Antonio (SAT) to San Diego (SAN)

The most popular months for travelers flying from San Antonio to San Diego are March, April, and October, when peak temperatures in San Diego reach up to 68.2°F in October. If you prefer quieter travel, consider May, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 62.6°F. For better deals, November usually offers the lowest average one-way fare around $201. Flight availability peaks in October, with approximately 37 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 24 flights per week.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $201, roughly 12% cheaper than the yearly average.
  • More budget-friendly months to fly: September, May, and October typically offer average one-way fares of around $214.
  • Most flight options: October has the highest number of flights from San Antonio to San Diego, with approximately 37 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January57.4°F (14.1°C)Average25$228
February56.8°F (13.8°C)Average24$245
March58.1°F (14.5°C)Slightly High30$254
April60.6°F (15.9°C)Slightly High32$233
May62.6°F (17.0°C)Slightly Low30$216
June66.4°F (19.1°C)Average36$234
July70.5°F (21.4°C)Average34$245
August72.3°F (22.4°C)Slightly Low27$238
September72.0°F (22.2°C)Average29$210
October68.2°F (20.1°C)Slightly High37$217
November62.6°F (17.0°C)Average36$201
December57.4°F (14.1°C)Slightly Low36$252

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from San Antonio (SAT) to San Diego (SAN)

  • Austin to San Diego (AUS-SAN): Austin-Bergstrom International Airport (AUS) is located approximately 67 miles from San Antonio International Airport (SAT). One-way economy prices for this route typically vary between $55 and $380, influenced by the travel season and booking time. You can find both non-stop and one-stop flight options available here. The leading airlines for this route include low-cost carrier Southwest Airlines and Alaska Airlines. Additionally, there are business and first-class service options accessible on this route.
  • Austin to Carlsbad (AUS-CLD): Austin-Bergstrom International Airport (AUS) lies around 67 miles from San Antonio International Airport (SAT), while McClellan-Palomar Airport (CLD) is roughly 28 miles from San Diego International Airport (SAN). One-way economy fares on this path generally range from $95 to $385, depending on the time of year and booking dates. This route is mainly served by one-stop flights, with most connections via Sky Harbor International Airport (PHX). American Airlines is the primary carrier operating on this route, with first-class service also available.
  • San Antonio to Carlsbad (SAT-CLD): McClellan-Palomar Airport (CLD) is located about 28 miles from San Diego International Airport (SAN). One-way economy fares for this trip typically fall between $115 and $375, depending on the season and how far in advance you book. This route primarily offers one-stop options, with most flights connecting through Sky Harbor International Airport (PHX). American Airlines is the most frequently chosen airline for this journey.

How to find the best prices for flights from San Antonio (SAT) to San Diego (SAN)

Getting some of the best deals on flights from San Antonio to San Diego is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures from 6 PM to 12 AM often offer lower prices, while morning flights from 5 AM to 12 PM are more popular. Additionally, flying on Saturday typically results in cheaper tickets, although Friday remains the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find San Diego hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Diego International Airport from San Antonio International Airport

San Diego welcomes travelers from San Antonio with a range of transport options based on price, convenience, and proximity. Here's how to reach San Diego efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Diego, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from San Diego International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Diego International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Diego International Airport, Seaport, a seaport, is located about 0.1 miles away on foot, while Middletown Station, a metro station, is approximately 2.3 miles from the airport by car. Additionally, B Street Cruise Ship Terminal, a cruise terminal, can be reached by car, sitting about 3 miles away from the airport.

Frequently asked questions

How much does a flight from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) cost?
You can find cheap one-way flights from $115 and cheap return flights from $240 San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) with Expedia. One-way flights typically cost between $120 and $962, and return flights often range between $349 and $2698. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
September is typically the cheapest month to fly from San Antonio (SAT) to San Diego (SAN), with average return fares around $328. This is about 17% lower than the average price throughout the year, as demand decreases after the summer travel season. Other cheap months to fly from San Antonio to San Diego include August and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Enter SAT to SAN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Southwest Airlines is one of the cheapest airlines offering nonstop flights from San Antonio Intl. (SAT) to San Diego Intl. (SAN), with round-trip tickets starting from around $628. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
To find a cheap flight from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best airline to fly with from San Antonio, TX (SAT) to San Diego, CA (SAN) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN offers the most daily flights from San Antonio to San Diego, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
When flying from San Antonio (SAT) to San Diego (SAN), September and August are the best months to consider. These months provide the most affordable return flights at around $328. August is perfect for summer activities, while September offers pleasant weather with fewer crowds, making it an ideal time to explore San Diego.*Prices based on flights available on Expedia in the last year.
How many flights per day from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
You can find approximately 2 nonstop flights per day from San Antonio Intl. (SAT) to San Diego Intl. (SAN). For more options, look at flights that include layovers.
What is the earliest flight from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from San Antonio (SAT) to San Diego (SAN) typically departs at around 5:00 AM, operated by American Airlines. This service is available in August, allowing you to plan your trip during the summer months. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The most popular departure times for flights from San Antonio Intl. (SAT) to San Diego Intl. (SAN) are in the early morning, from 6am to 9am. About 29% of passengers prefer this time window. Many major carriers, including American Airlines and Southwest Airlines, offer flights during this window. This timing is favored as it allows you to arrive in San Diego with plenty of time to enjoy the day.
How long does it take to fly from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Direct flights from SAT to SAN usually take about 3 hours, traveling roughly 1,128 miles. If you opt for a connecting flight, expect to add around 5 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
First class is available on flights from SAT to SAN. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How do I earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) flight with Expedia?
It's easy to earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Diego from San Antonio Intl. (SAT)?
If you're planning to travel to San Diego from San Antonio Intl. (SAT), you can fly into San Diego Intl. (SAN) Some flights may connect through major hubs like George Bush Intercontinental (IAH), Seattle - Tacoma Intl. (SEA), El Paso Intl. (ELP) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) at the last minute?
Typically, booking a last minute flight from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package?
Securing a San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) San Diego Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.)?
If you booked your San Antonio, TX (SAT-San Antonio Intl.) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

0
Origin airport
San Antonio Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$239
Distance
1127 mi

Book with confidence

San Antonio to San Diego Flights

The cheapest times to fly from San Antonio to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Antonio to San Diego are during the month of October. You can find some of the cheapest flights from San Antonio to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to San Diego

Sunday is one of the best days to book for cheap flights from San Antonio to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Antonio to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Antonio to San Diego in 2026. You can also book with separate airlines for your outbound and return journeys, from $115 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Antonio to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Antonio to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Antonio to San Diego Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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