Save time at SFO by using the AirTrain Red Line to quickly navigate between terminals and security checkpoints.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $290 (Kiwi.com) |
One-way from | $61 (Trip.com) |
Popular in | November |
Cheapest in | February |
Average price | $482 |
Good round-trip deal | $411 or less |
Good one-way deal | $204 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 1/20
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Tue 2/3
2:50 pm-11:03 pm
1 stop10h 13m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 1/15
10:35 am-9:35 pm
2 stops9h 00m
Lambert-St Louis
Sun 1/18
6:10 am-1:38 pm
2 stops9h 28m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 1/23
7:00 am-10:46 pm
1 stop13h 46m
Lambert-St Louis
Sat 2/7
6:19 pm-10:42 am
1 stop18h 23m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 1/20
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Mon 2/2
2:50 pm-9:58 pm
1 stop9h 08m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Wed 1/21
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Tue 2/3
2:50 pm-10:42 am
1 stop21h 52m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 1/24
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Sat 2/7
6:19 pm-10:42 am
1 stop18h 23m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 1/24
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Thu 2/5
2:50 pm-9:58 pm
1 stop9h 08m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 1/24
7:40 pm-1:54 pm
1 stop16h 14m
Lambert-St Louis
Fri 2/6
2:50 pm-11:03 pm
1 stop10h 13m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 12/16
7:15 am-6:33 pm
1 stop9h 18m
Lambert-St Louis
Wed 12/24
10:04 am-6:35 pm
1 stop10h 31m
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Wed 12/17
5:07 pm-1:01 am
1 stop5h 54m
Lambert-St Louis
Wed 12/24
10:04 am-6:35 pm
1 stop10h 31m
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
To ensure you get the cheapest price possible for a flight from San Francisco to St. Louis, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, February is the cheapest month in which you can book a flight from San Francisco to St. Louis (average of $119). Flying from San Francisco to St. Louis in June is currently the most expensive (average of $262). 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.
It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the afternoon.
Travelers seeking maximum savings on their San Francisco to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
Food
Boarding
Comfort
Crew
Overall
Entertainment
Reviews
Walter,Aug 2025
OAK - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$375 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$216 | Average$343 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$439 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$306 | Average$471 | FlexibilityNo cancel fee | On-time63% |