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Cheap Flights from St Louis to San Diego, CA, United States - STL to SAN Last modified: May 28, 2016 1:53 PM

Popular flights from St Louis to San Diego Last modified: May 28, 2016 1:53 PM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Sep 6, 2016 Sep 11, 2016 $472
American Airlines
Departure Date Return Date Lowest Price
Aug 27, 2016 Sep 1, 2016 $350
Aug 29, 2016 Sep 10, 2016 $350
Sep 1, 2016 Sep 7, 2016 $350
Sep 7, 2016 Sep 13, 2016 $350
Sep 10, 2016 Sep 17, 2016 $350
Frontier Airlines
Departure Date Return Date Lowest Price
Aug 20, 2016 Aug 23, 2016 $241
United Airlines
Departure Date Return Date Lowest Price
Jun 29, 2016 Jul 6, 2016 $276
Aug 10, 2016 Aug 12, 2016 $276
Aug 13, 2016 Aug 20, 2016 $276
Aug 15, 2016 Aug 19, 2016 $276

How Much Does it Cost to Fly from St Louis to San Diego (STL to SAN)?

We have collected flight cost data from across the web for travel from St Louis to San Diego, and have found the average flight price for this trip to be $283.

When Can I Buy the Cheapest Flight from St Louis to San Diego (STL to SAN)?

Airlines can adjust prices for plane tickets from St Louis to San Diego based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Cheapest Day To Fly from St Louis to San Diego

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to San Diego.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$276 $296 $276 $278 $278 $241 $333

Lowest Fares Chart By Month from St Louis to San Diego

The chart below shows the lowest fare by month when flying from St Louis to San Diego.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May St Louis San Diego United 5/29/16 6/4/16 1 $736
June St Louis San Diego United 6/29/16 7/6/16 1 $276
July St Louis San Diego United 7/1/16 7/4/16 1 $343
August St Louis San Diego Frontier 8/20/16 8/23/16 1 $241
September St Louis San Diego Frontier 9/7/16 9/13/16 1 $244
October St Louis San Diego Frontier 10/1/16 10/4/16 1 $244
November St Louis San Diego United 11/17/16 11/21/16 1 $350
December St Louis San Diego American 12/8/16 12/12/16 1 $350

Round Trip vs One Way Flights from St Louis to San Diego (STL to SAN)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to San Diego. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to San Diego is $179.

The average price for round trip flights from St Louis to San Diego is $347.

St Louis to San Diego Flight Questions

Below are some common questions that asked about this flight route:

Question: What are the most popular connecting cities when flying from St Louis to San Diego?
Answer: Denver, CO

Airlines Flying from St Louis to San Diego (STL to SAN) Number of flights searched: 287Last modified: May 28, 2016 1:53 PM

Below are the different airlines that fly from St Louis to San Diego with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to San Diego.

St Louis to San Diego
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American LAX X X X X X X X
Alaska SEA X X X X X X X
Alaska SEA / SJC X X X X X X X
Delta DTW X X X X X X X
Delta SLC / LAX X X X X X X X
United IAH X X X X X X X
Southwest - X X X X X X X
Southwest MCI X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and San Diego, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Los Angeles American, Alaska, Frontier, United $244
St Louis to Las Vegas American, Alaska, Frontier, United $108
St Louis to Santa Ana American, Alaska, United $308
St Louis to Phoenix American, Alaska, Frontier, United $244
St Louis to PalomarCheck Dates
St Louis to Ontario American, Alaska, United $325
St Louis to Palm Springs American, Alaska, United $324
St Louis to Long Beach American, Alaska, United $323
St Louis to Burbank American, Alaska, United $332
St Louis to San Francisco American, Alaska, Frontier, United $244

Cheap International Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Tijuana American, AeroMexico, Alaska, United $863

Cheap Domestic Flights to San Diego - SAN

FlightsAirlineLowest Price
Peoria to San Diego American, United $421
Evansville to San Diego American, United $409
Moline to San Diego American, Alaska, United $412
Springfield to San Diego American, Alaska, United $392
Bloomington - Normal to San Diego American $412
Champaign to San Diego American $467
Springfield to San Diego American, United $446
Bloomington - Normal to Los Angeles American $360
Moline to Los Angeles American, Alaska, United $337
Springfield to Los Angeles American, Alaska, United $392
Evansville to Los Angeles American, United $409
Peoria to Los Angeles American, United $360
Peoria to Las Vegas American, United $304
Springfield to Santa Ana American, Alaska, United $392
Springfield to Los Angeles American, United $360
Champaign to Los Angeles American $432
Springfield to Las Vegas American, United $392
Moline to Las Vegas American, Alaska, United $304
Moline to Santa Ana American, Alaska, United $371
Cheap Flights from St Louis to San Diego, CA, United States, from $241 Round trip from STL to SAN