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Cheap Flights from St Louis to San Diego, CA, United States - STL to SAN

Popular flights from St Louis to San Diego

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
Jun 11, 2016 Jun 13, 2016 $402
American Airlines
Departure Date Return Date Lowest Price
Jun 4, 2016 Jun 10, 2016 $270
Jun 4, 2016 Jun 11, 2016 $270
Jun 11, 2016 Jun 13, 2016 $270
Jun 29, 2016 Jul 5, 2016 $270
Jun 29, 2016 Jul 6, 2016 $270
United Airlines
Departure Date Return Date Lowest Price
May 17, 2016 May 21, 2016 $270
May 17, 2016 May 23, 2016 $270
Jun 1, 2016 Jun 8, 2016 $270
Jun 1, 2016 Jun 7, 2016 $270
Jun 1, 2016 Jun 6, 2016 $270

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
$290 $270 $270 $270 $270 $270 $347

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 5/17/16 5/21/16 1 $270
June St Louis San Diego American 6/4/16 6/10/16 1 $270
July St Louis San Diego American 7/13/16 7/27/16 1 $270
August St Louis San Diego American 8/6/16 8/11/16 1 $270
September St Louis San Diego American 9/1/16 9/4/16 1 $270
October St Louis San Diego American 10/8/16 10/11/16 1 $270
November St Louis San Diego American 11/10/16 11/16/16 1 $270
December St Louis San Diego American 12/3/16 12/10/16 1 $270

TIPSave $61 by flying into Los Angeles instead of San Diego from St Louis

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 $175.

The average price for round trip flights from St Louis to San Diego is $317.

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)

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 DFW X X X X X X X
Alaska SEA X X X X X X X
Delta ATL X X X X X X X
Delta SLC / LAX X X X X X X X
Frontier DEN X X X X X X X
United DEN X X X X X X X
Southwest - X X X X X X X
Southwest DEN 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 $261
St Louis to Las Vegas American, Alaska, Frontier, United $123
St Louis to Santa Ana American, Alaska, United $281
St Louis to Phoenix American, Alaska, Frontier, United $279
St Louis to PalomarCheck Dates
St Louis to Ontario American, Alaska, United $375
St Louis to Palm Springs American, Alaska, Frontier, United $324
St Louis to Long Beach American, Alaska, United $292
St Louis to Burbank American, Alaska, United $340
St Louis to San Francisco American, Alaska, Frontier, United $261

Cheap International Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Tijuana American, AeroMexico, Alaska, United Check Dates

Cheap Domestic Flights to San Diego - SAN

FlightsAirlineLowest Price
Peoria to San Diego American, United $338
Evansville to San Diego American, United $470
Moline to San Diego American, Alaska, United $368
Springfield to San Diego American, Alaska, United $452
Bloomington - Normal to San Diego American $314
Champaign to San Diego American $379
Springfield to San Diego American, United $442
Bloomington - Normal to Los Angeles American $294
Moline to Los Angeles American, Alaska, United $314
Springfield to Los Angeles American, Alaska, United $452
Evansville to Los Angeles American, United $469
Peoria to Los Angeles American, United $314
Peoria to Las Vegas American, United $304
Springfield to Santa Ana American, Alaska, United $482
Springfield to Los Angeles American, United $442
Champaign to Los Angeles American $355
Springfield to Las Vegas American, United $452
Moline to Las Vegas American, Alaska, United $304
Moline to Santa Ana American, Alaska, United $314
Cheap Flights from St Louis to San Diego, CA, United States, from $270 Round trip from STL to SAN