$60+ Cheap flights from San Francisco to St. Louis (SFO - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Mar 13 — Mar 201
1 adult, Economy
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Find cheap flights from San Francisco to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Lambert-St Louis are usually found in September or October, booked 79 days in advance, depart on a Tuesday or Saturday and return on a Thursday
Cheap flight deals from San Francisco to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to St. LouisExplore the most affordable flight options available from San Francisco to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.
Explore the most affordable flight options available from San Francisco to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:03 am
SFO
- STL
1 stop10h 10m
Frontier
Wed 3/118:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Deal found 2/9![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:20 am
SFO
- STL
1 stop6h 33m
Frontier
Sat 2/282:51 pm
STL
- SFO
1 stop11h 37m
Frontier
Deal found 2/9![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Mon 3/92:09 pm
STL
- SFO
2 stops32h 00m
Frontier
Deal found 2/8![Frontier logo]()
$209
This Expedia deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:33 pm
SFO
- STL
1 stop15h 48m
Frontier
Mon 5/49:55 pm
STL
- SFO
1 stop18h 31m
Frontier
Deal found 2/8![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1210:40 pm
SFO
- STL
1 stop12h 54m
Frontier
Wed 3/1811:32 am
STL
- SFO
1 stop9h 42m
Frontier
Deal found 2/9![Frontier logo]()
$214
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:40 pm
SFO
- STL
1 stop11h 09m
Frontier
Sat 3/78:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Deal found 2/9![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:25 pm
SFO
- STL
1 stop23h 37m
Frontier
Wed 3/1811:32 am
STL
- SFO
1 stop9h 42m
Frontier
Deal found 2/10![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:03 am
SFO
- STL
1 stop10h 10m
Frontier
Thu 3/510:11 pm
STL
- SFO
1 stop11h 47m
Frontier
Deal found 2/11![Frontier logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:15 pm
SFO
- STL
2 stops18h 38m
Frontier
Tue 3/178:06 pm
STL
- SFO
1 stop24h 31m
Frontier
Deal found 2/10![Frontier logo]()
$226
Best flights from San Francisco to St. LouisDiscover carefully curated flight deals from San Francisco to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
Discover carefully curated flight deals from San Francisco to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:09 pm
SFO
- STL
2 stops37h 10m
Frontier
Wed 3/1811:32 am
STL
- SFO
1 stop9h 42m
Frontier
Deal found 2/11![Frontier logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:26 pm
SFO
- STL
1 stop9h 33m
Alaska Airlines
Tue 5/57:00 am
STL
- SFO
1 stop9h 21m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:20 am
SFO
- STL
2 stops11h 03m
Delta
Tue 3/106:29 am
STL
- SFO
2 stops9h 35m
Delta
Deal found 2/10![Delta logo]()
$355
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/114:17 pm
SFO
- STL
Nonstop4h 08m
United Airlines
Wed 3/187:00 pm
STL
- SFO
1 stop7h 16m
United Airlines
Deal found 2/9![United Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:00 am
SFO
- STL
1 stop11h 12m
Frontier
Mon 5/183:02 pm
STL
- SFO
2 stops11h 20m
Frontier
Deal found 2/11![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 am
SFO
- STL
1 stop11h 12m
Frontier
Sun 5/38:12 pm
STL
- SFO
2 stops18h 40m
Frontier
Deal found 2/11![Frontier logo]()
$300
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:00 am
SFO
- STL
2 stops9h 07m
Delta
Sat 4/1112:28 pm
STL
- SFO
1 stop7h 37m
Delta
Deal found 2/9![Delta logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:13 am
SFO
- STL
1 stop10h 46m
Alaska Airlines
Tue 4/143:50 pm
STL
- SFO
1 stop8h 37m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
SFO
- STL
1 stop8h 49m
Delta
Tue 5/192:27 pm
STL
- SFO
2 stops11h 34m
Delta
Deal found 2/9![Delta logo]()
$376
Last-minute flights from San Francisco to St. LouisDiscover last-minute flight deals from San Francisco to St. Louis. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to St. Louis. Data last updated February 11, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/198:43 am
SFO
- STL
1 stop10h 43m
Frontier
Sat 2/212:51 pm
STL
- SFO
1 stop11h 37m
Frontier
Deal found 2/10![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:20 am
SFO
- STL
1 stop6h 33m
Frontier
Sat 2/282:51 pm
STL
- SFO
1 stop11h 37m
Frontier
Deal found 2/9![Frontier logo]()
$190
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:03 am
SFO
- STL
1 stop10h 10m
Frontier
Wed 3/118:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Deal found 2/9![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:03 am
SFO
- STL
1 stop10h 10m
Frontier
Thu 3/510:11 pm
STL
- SFO
1 stop11h 47m
Frontier
Deal found 2/11![Frontier logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:15 pm
SFO
- STL
2 stops18h 38m
Frontier
Tue 3/178:06 pm
STL
- SFO
1 stop24h 31m
Frontier
Deal found 2/10![Frontier logo]()
$226
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:40 pm
SFO
- STL
1 stop11h 09m
Frontier
Sat 3/78:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Deal found 2/9![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/69:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Mon 3/92:09 pm
STL
- SFO
2 stops32h 00m
Frontier
Deal found 2/8![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:25 pm
SFO
- STL
1 stop23h 37m
Frontier
Wed 3/1811:32 am
STL
- SFO
1 stop9h 42m
Frontier
Deal found 2/10![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1210:40 pm
SFO
- STL
1 stop12h 54m
Frontier
Wed 3/1811:32 am
STL
- SFO
1 stop9h 42m
Frontier
Deal found 2/9![Frontier logo]()
$214
One-way flights from San Francisco to St. LouisSearch for one-way flight options from San Francisco to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
Search for one-way flight options from San Francisco to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Trip.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:00 am
SFO
- STL
1 stop11h 12m
Frontier
Deal found 2/10![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
SFO
- STL
1 stop11h 12m
Frontier
Deal found 2/9![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:00 am
SFO
- STL
1 stop11h 12m
Frontier
Deal found 2/9![Frontier logo]()
$66
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:35 am
SFO
- STL
1 stop6h 18m
Frontier
Deal found 2/9![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:25 am
SFO
- STL
1 stop29h 28m
Frontier
Deal found 2/11![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/109:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Deal found 2/11![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/179:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Deal found 2/10![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:51 am
SFO
- STL
1 stop29h 21m
Frontier
Deal found 2/10![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/319:04 pm
SFO
- STL
1 stop10h 44m
Frontier
Deal found 2/10![Frontier logo]()
$89
This Priceline deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:03 am
SFO
- STL
1 stop10h 10m
Frontier
Deal found 2/9![Frontier logo]()
$90
This Trip.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:24 pm
SFO
- STL
1 stop19h 47m
Frontier
Deal found 2/11![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:23 pm
SFO
- STL
1 stop10h 07m
Frontier
Deal found 2/9![Frontier logo]()
$93
Find flight deals from San Francisco to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $179 (Priceline) |
One-way from | $60 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $513 |
Good round-trip deal | $416 or less |
Good one-way deal | $234 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from San Francisco to St. Louis that are best for you.
Fly from
San Francisco
Fly to
St. Louis
Route
Depart
Return
Price
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Wed 3/11
8:09 pm-11:19 am
2 stops37h 10m
Lambert-St Louis
Wed 3/18
11:32 am-7:14 pm
1 stop9h 42m
$238
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 5/15
6:00 am-7:12 pm
1 stop11h 12m
Lambert-St Louis
Mon 5/18
3:02 pm-12:22 am
2 stops11h 20m
$277
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 5/1
6:00 am-7:12 pm
1 stop11h 12m
Lambert-St Louis
Sun 5/3
8:12 pm-12:52 pm
2 stops18h 40m
$300
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 5/2
12:26 pm-11:59 pm
1 stop9h 33m
Lambert-St Louis
Tue 5/5
7:00 am-2:21 pm
1 stop9h 21m
$347
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 3/7
10:20 am-11:23 pm
2 stops11h 03m
Lambert-St Louis
Tue 3/10
6:29 am-2:04 pm
2 stops9h 35m
$355
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 4/9
6:00 am-5:07 pm
2 stops9h 07m
Lambert-St Louis
Sat 4/11
12:28 pm-6:05 pm
1 stop7h 37m
$366
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Wed 3/11
4:17 pm-10:25 pm
Nonstop4h 08m
Lambert-St Louis
Wed 3/18
7:00 pm-12:16 am
1 stop7h 16m
$367
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 4/7
11:13 am-11:59 pm
1 stop10h 46m
Lambert-St Louis
Tue 4/14
3:50 pm-10:27 pm
1 stop8h 37m
$370
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 5/16
6:00 am-4:49 pm
1 stop8h 49m
Lambert-St Louis
Tue 5/19
2:27 pm-12:01 am
2 stops11h 34m
$376
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 5/16
10:38 pm-10:30 am
1 stop9h 52m
$94
Showing 1-10 of 20 results
Compare providers for flights from San Francisco to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to St. Louis in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| 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 |
- Most accurate provider: When it comes to deals on San Francisco-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Francisco with our price prediction graph.
SFO-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to St. Louis
How far ahead should I book a flight from San Francisco to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to St. Louis. Price data was last updated on February 6, 2026.
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.
What is the cheapest month to book a flight from San Francisco to St. Louis?
Currently, February is the cheapest month in which you can book a flight from San Francisco to St. Louis (average of $91). Flying from San Francisco to St. Louis in June is currently the most expensive (average of $265). 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.
What is the cheapest time of day to fly from SFO to STL?
Find hourly flight availability from San Francisco to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2026.
It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.
The best insider tips for San Francisco to St. Louis flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to St. Louis trip
Our travel experts
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 11, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from San Francisco to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from San Francisco to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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San Francisco and St. Louis flights
Browse other San Francisco and St. Louis flight options. Last updated on February 11, 2026.
Other flights from San Francisco
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on February 11, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 11, 2026.
Top 5 airlines flying from San Francisco to St. Louis
Discover the top 5 airlines that operate flights from San Francisco to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$269 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$189 | Average$378 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$385 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$292 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$325 | Average$508 | FlexibilityNo cancel fee | On-time63% |