$119+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Sep 8 — Sep 151
Round-trip
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 64 days in advance, depart on a Wednesday or Thursday 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 August 9, 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 August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 9/2911:58 pm -
2 stops17h 19m
Thu 10/110:20 am -
1 stop14h 08m
Deal found 8/5![Frontier logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 9/2710:05 pm -
1 stop13h 05m
Tue 9/2912:17 pm -
2 stops24h 05m
Deal found 8/4![Frontier logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Thu 9/310:59 pm -
2 stops16h 23m
Tue 9/85:27 pm -
1 stop31h 01m
Deal found 8/4![Frontier logo]()
$370
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:23 am -
1 stop7h 47m
Sun 9/66:35 am -
1 stop8h 21m
Deal found 8/8![Alaska Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Thu 11/196:25 am -
2 stops10h 50m
Thu 12/33:52 pm -
1 stop16h 54m
Deal found 8/6![Frontier logo]()
$376
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:08 am -
1 stop7h 29m
Sun 9/63:35 pm -
1 stop9h 35m
Deal found 8/8![American Airlines logo]()
$377
This Frontier deal was found by Cheapflights users on 8/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:00 am -
1 stop11h 13m
Wed 9/912:17 pm -
1 stop8h 07m
Deal found 8/8![Frontier logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 8/227:30 pm -
1 stop21h 43m
Mon 8/247:58 pm -
2 stops17h 54m
Deal found 8/7![Frontier logo]()
$379
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:20 am -
1 stop28h 30m
Sun 8/305:27 pm -
1 stop7h 27m
Deal found 8/6![Frontier logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Sun 8/169:05 pm -
1 stop19h 10m
Fri 8/217:58 pm -
2 stops41h 54m
Deal found 8/5![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Sun 8/169:05 pm -
1 stop19h 10m
Tue 8/188:00 am -
1 stop13h 56m
Deal found 8/5![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 8/261:07 pm -
2 stops28h 06m
Fri 8/287:58 pm -
1 stop6h 20m
Deal found 8/9![Frontier logo]()
$383
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 August 9, 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 August 9, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/2912:45 pm -
Nonstop3h 58m
Thu 10/17:08 am -
Nonstop4h 22m
Deal found 8/5![United Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Wed 9/29:13 pm -
2 stops17h 57m
Wed 9/93:19 pm -
1 stop8h 20m
Deal found 8/7![Alaska Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 8/5. 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.
Wed 9/212:25 pm -
1 stop9h 01m
Wed 9/96:15 am -
2 stops12h 43m
Deal found 8/5![Delta logo]()
$453
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:00 pm -
Nonstop3h 50m
Mon 8/318:25 am -
Nonstop4h 10m
Deal found 8/4![Southwest logo]()
$540
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/2012:45 pm -
Nonstop3h 58m
Sat 10/3111:15 am -
1 stop8h 08m
Deal found 8/5![United Airlines logo]()
$403
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:46 pm -
1 stop16h 58m
Sun 11/17:00 am -
2 stops12h 21m
Deal found 8/8![Alaska Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 8/2712:45 am -
1 stop7h 25m
Mon 8/318:42 am -
Nonstop4h 22m
Deal found 8/4![United Airlines logo]()
$440
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Thu 9/247:00 am -
1 stop9h 38m
Sun 9/276:08 pm -
1 stop20h 31m
Deal found 8/7![Alaska Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/212:40 pm -
Nonstop3h 59m
Wed 9/98:35 am -
Nonstop4h 22m
Deal found 8/6![United Airlines logo]()
$493
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:23 am -
1 stop7h 47m
Sun 9/66:35 am -
2 stops12h 47m
Deal found 8/8![Alaska Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Thu 10/155:00 am -
1 stop7h 10m
Mon 10/197:08 am -
Nonstop4h 22m
Deal found 8/6![United Airlines logo]()
$503
Last-minute flights from San Francisco to St. LouisDiscover last-minute flight deals from San Francisco to St. Louis. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to St. Louis. Data last updated August 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Sun 8/169:05 pm -
1 stop19h 10m
Fri 8/217:58 pm -
2 stops41h 54m
Deal found 8/5![Frontier logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Sun 8/169:05 pm -
1 stop19h 10m
Tue 8/188:00 am -
1 stop13h 56m
Deal found 8/5![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 8/227:30 pm -
1 stop21h 43m
Mon 8/247:58 pm -
2 stops17h 54m
Deal found 8/7![Frontier logo]()
$379
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:20 am -
1 stop28h 30m
Sun 8/305:27 pm -
1 stop7h 27m
Deal found 8/6![Frontier logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 8/261:07 pm -
2 stops28h 06m
Fri 8/287:58 pm -
1 stop6h 20m
Deal found 8/9![Frontier logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Thu 9/310:59 pm -
2 stops16h 23m
Tue 9/85:27 pm -
1 stop31h 01m
Deal found 8/4![Frontier logo]()
$370
This Frontier deal was found by Cheapflights users on 8/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:00 am -
1 stop11h 13m
Wed 9/912:17 pm -
1 stop8h 07m
Deal found 8/8![Frontier logo]()
$378
This Alaska Airlines deal was found by Cheapflights users on 8/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:23 am -
1 stop7h 47m
Sun 9/66:35 am -
1 stop8h 21m
Deal found 8/8![Alaska Airlines logo]()
$375
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:08 am -
1 stop7h 29m
Sun 9/63:35 pm -
1 stop9h 35m
Deal found 8/8![American Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 9/2710:05 pm -
1 stop13h 05m
Tue 9/2912:17 pm -
2 stops24h 05m
Deal found 8/4![Frontier logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 9/2911:58 pm -
2 stops17h 19m
Thu 10/110:20 am -
1 stop14h 08m
Deal found 8/5![Frontier logo]()
$361
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 August 9, 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 August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 9/1012:07 pm -
2 stops53h 10m
Deal found 8/8![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 11/45:52 pm -
2 stops47h 23m
Deal found 8/7![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 10/26:04 am -
1 stop11h 13m
Deal found 8/7![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 10/64:31 pm -
2 stops24h 46m
Deal found 8/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/166:04 am -
1 stop11h 13m
Deal found 8/7![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 10/76:04 am -
1 stop11h 13m
Deal found 8/7![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Mon 10/512:07 pm -
2 stops53h 10m
Deal found 8/8![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 8/4. 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 9/911:42 am -
1 stop5h 35m
Deal found 8/4![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 8/5. 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 9/2311:42 am -
1 stop5h 35m
Deal found 8/5![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 8/7. 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.
Sat 10/311:58 pm -
1 stop7h 37m
Deal found 8/7![Frontier logo]()
$137
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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $361 (Kiwi.com) |
One-way from | $119 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $509 |
Good round-trip deal | $414 or less |
Good one-way deal | $251 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 August 9, 2026.
Use the filters below to find and compare flights from San Francisco to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Tue 9/29
12:45 pm-6:43 pm
Nonstop3h 58m
Lambert-St Louis
Thu 10/1
7:08 am-9:30 am
Nonstop4h 22m
$393
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Wed 9/2
9:13 pm-5:10 pm
2 stops17h 57m
Lambert-St Louis
Wed 9/9
3:19 pm-9:39 pm
1 stop8h 20m
$398
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Tue 10/20
12:45 pm-6:43 pm
Nonstop3h 58m
Lambert-St Louis
Sat 10/31
11:15 am-5:23 pm
1 stop8h 08m
$403
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Thu 8/27
12:45 am-10:10 am
1 stop7h 25m
Lambert-St Louis
Mon 8/31
8:42 am-11:04 am
Nonstop4h 22m
$440
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Fri 10/30
8:46 pm-3:44 pm
1 stop16h 58m
Lambert-St Louis
Sun 11/1
7:00 am-5:21 pm
2 stops12h 21m
$441
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Wed 9/2
12:25 pm-11:26 pm
1 stop9h 01m
Lambert-St Louis
Wed 9/9
6:15 am-4:58 pm
2 stops12h 43m
$453
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Thu 9/24
7:00 am-6:38 pm
1 stop9h 38m
Lambert-St Louis
Sun 9/27
6:08 pm-12:39 pm
1 stop20h 31m
$460
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Wed 9/2
12:40 pm-6:39 pm
Nonstop3h 59m
Lambert-St Louis
Wed 9/9
8:35 am-10:57 am
Nonstop4h 22m
$493
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Thu 10/15
5:00 am-2:10 pm
1 stop7h 10m
Lambert-St Louis
Mon 10/19
7:08 am-9:30 am
Nonstop4h 22m
$503
San FranciscoSt. Louis
SFO San Francisco - STL Lambert-St Louis
SFOSTL
San Francisco
Thu 9/3
7:23 am-5:10 pm
1 stop7h 47m
Lambert-St Louis
Sun 9/6
6:35 am-5:22 pm
2 stops12h 47m
$518
Showing 1-10 of 22 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | 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?
To ensure you get the cheapest price possible for a flight from San Francisco to St. Louis, you should look to book at least 63 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, September is the cheapest month in which you can book a flight from San Francisco to St. Louis (average of $447). Flying from San Francisco to St. Louis in March is currently the most expensive (average of $623). 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 August 9, 2026.
It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 46% 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 August 9, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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San Francisco and St. Louis flights
Browse other San Francisco and St. Louis flight options. Last updated on August 9, 2026.
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Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on August 9, 2026.
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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 August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$419 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$156 | Average$317 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$218 | Average$502 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$328 | Average$591 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$569 | FlexibilityNo cancel fee | On-time63% |