Plan to arrive at SAN at least two hours before your flight to avoid stress from traffic congestion near the airport.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $61 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $352 |
Good round-trip deal | $318 or less |
Good one-way deal | $214 or less |
Fly from
Fly to
Route
Depart
Return
Price
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 11/18
6:58 am-9:07 am
1 stop24h 09m
Lambert-St Louis
Thu 11/20
7:57 pm-8:01 am
1 stop14h 04m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Mon 12/1
8:19 pm-10:14 am
2 stops35h 55m
Lambert-St Louis
Wed 12/3
7:43 pm-7:15 pm
1 stop25h 32m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Fri 11/14
8:30 am-9:07 am
2 stops22h 37m
Lambert-St Louis
Mon 11/17
7:45 pm-12:07 pm
1 stop18h 22m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Mon 11/10
5:47 pm-9:07 am
1 stop13h 20m
Lambert-St Louis
Fri 11/14
2:42 pm-11:48 pm
1 stop11h 06m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 12/23
4:47 pm-10:02 am
1 stop15h 15m
Lambert-St Louis
Tue 12/30
10:10 pm-12:11 pm
1 stop16h 01m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Tue 12/16
2:05 pm-10:10 pm
1 stop6h 05m
Lambert-St Louis
Wed 12/17
3:15 pm-5:15 pm
Nonstop4h 00m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Sat 12/6
2:15 pm-2:27 pm
1 stop22h 12m
Lambert-St Louis
Tue 12/9
7:00 am-3:06 pm
1 stop10h 06m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Sat 12/6
2:16 pm-10:45 pm
1 stop6h 29m
Lambert-St Louis
Tue 12/9
1:35 pm-7:52 pm
2 stops8h 17m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Fri 12/19
6:25 am-10:02 am
1 stop25h 37m
Lambert-St Louis
Thu 12/25
5:19 pm-12:38 pm
1 stop21h 19m
San DiegoSt. Louis
SAN - STL
SANSTL
San Diego
Thu 12/11
9:34 am-11:59 pm
1 stop12h 25m
Lambert-St Louis
Mon 12/15
7:00 am-8:18 pm
2 stops15h 18m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from San Diego to St. Louis is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, September is the cheapest month in which you can book a flight from San Diego to St. Louis (average of $71). Flying from San Diego to St. Louis in March is currently the most expensive (average of $220). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from San Diego to St. Louis in the evening. If you’re flexible enough to do this you can expect to save up to 58% on your trip compared to booking a flight in the morning.
Travelers seeking maximum savings on their San Diego to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Denver (DEN) – chosen by Cheapflights users on 75% of 1-stop itineraries from San Diego to St. Louis on Cheapflights.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 6h 07m.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 6h 07m.
Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 3h 29m.
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
Overall
Entertainment
Boarding
Comfort
Food
Crew
Reviews
Walter,Aug 2025
OAK - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$184 | Average$278 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$249 | Average$338 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$366 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$306 | Average$474 | FlexibilityNo cancel fee | On-time63% |