RM797 Cheap Flights from St. Louis (STL) to San Diego (SAN)

View RM797 flight on Sat, 13 Dec 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to San Diego Intl. Airport (SAN)

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Cheap Flights from St. Louis to San Diego (STL-SAN)

Prices were available within the past 7 days and start at RM797 for one-way flights and RM2,236 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,236 Return, found 2 days ago
RM2,236
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,236 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,324 Return, found 2 days ago
RM2,324
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,324 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,429 Return, found 2 days ago
RM2,429
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,429 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,500 Return, found 2 days ago
RM2,500
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,500 found 2 days ago
Delta
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,518 Return, found 2 days ago
RM2,518
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,518 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,522 Return, found 2 days ago
RM2,522
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,522 found 2 days ago
Delta
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,559 Return, found 2 days ago
RM2,559
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,559 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,589 Return, found 2 days ago
RM2,589
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,589 found 2 days ago
United
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,598 Return, found 2 days ago
RM2,598
Return
found 2 days ago
Select United flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,598 found 2 days ago
American Airlines
Sat, 13 Dec - Sat, 20 Dec
STL
St. Louis
SAN
San Diego
RM2,611 Return, found 2 days ago
RM2,611
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Dec from St. Louis to San Diego, returning Sat, 20 Dec, priced at RM2,611 found 2 days ago

Find the cheapest month to fly from St. Louis (STL) to San Diego (SAN)

November is typically the cheapest month to fly

From RM 496 - RM 1,805 per traveller.
St. Louis to San Diego route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
San Diego Intl.
Return price
RM2,236
Distance
2487 km
Average flight time
3 hours 49 mins

Perfect flights from St. Louis to San Diego

Your Journey from St. Louis to San Diego

Start your unforgettable journey with Expedia. Our broad selection of flights from St. Louis to San Diego caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, American Airlines, United. Our selection of flights from Lambert-St. Louis Intl. to San Diego Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with St. Louis to San Diego Flights

Experience the joy of finding cheap flights from Lambert-St. Louis Intl. to San Diego Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM797 and roundtrip prices from RM2,236*.
 

Pre-Flight Essentials

Ensure a smooth journey from St. Louis to San Diego with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant San Diego

Picture yourself stepping off the plane in San Diego and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your St. Louis to San Diego Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from St. Louis to San Diego.
 

Beyond the Flight – Exploring San Diego

With Expedia, your adventure extends beyond the flight. Explore San Diego at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from St. Louis to San Diego with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from St. Louis to San Diego with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from STL to San Diego Intl. Airport (SAN)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip flight between STL and SAN was RM2,236. Fares this cheap don't hang around, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to San Diego Airport?
Most flights can be conveniently cancelled online, but whether or not you incur a fee depends on your airline. If you do need to cancel your trip, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to San Diego Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for STL to San Diego Intl. Airport (SAN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from St. Louis Lambert International Airport to SAN?
It's around 2,500 kilometres between St. Louis and San Diego, so you'll be up in the air for a while. Keep yourself occupied by packing things like crossword puzzles or a gripping book.
Which airlines fly direct from Lambert Field to San Diego Airport?
Southwest Airlines (WN) will fly you from Lambert-St. Louis Intl. Airport (STL) to San Diego Intl. Airport (SAN) comfortably and safely. Choose from 30 flights every month on this route.
Are Lambert-St. Louis Intl. Airport (STL) to San Diego Intl. Airport (SAN) flight tickets cheaper when they're purchased at the last minute?
It is possible to score amazing last-minute deals from STL to San Diego Airport, but it's also possible to miss out entirely! As many airlines release seats up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares carrier prices and updates flight deals regularly, so you can rest assured you're always getting the latest offers.

Explore a world of travel with Expedia

*Available to Expedia members.