$184+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Jul 23 — Jul 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 Thursday or Wednesday and return on a Friday
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 June 23, 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 June 23, 2026.
This Frontier deal was found by Cheapflights users on 6/20. 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.
Sun 6/286:00 am
SFO
- STL
1 stop10h 53m
Frontier
Sat 7/113:41 pm
STL
- SFO
1 stop9h 18m
Frontier
Deal found 6/20![Frontier logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/186:00 am
SFO
- STL
1 stop11h 23m
Frontier
Sun 7/197:10 pm
STL
- SFO
2 stops23h 01m
Frontier
Deal found 6/20![Frontier logo]()
$395
This Mytrip deal was found by Cheapflights users on 6/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Fri 7/108:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/20![Frontier logo]()
$397
This Frontier deal was found by Cheapflights users on 6/18. 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 6/276:00 am
SFO
- STL
1 stop10h 53m
Frontier
Mon 7/138:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/18![Frontier logo]()
$399
This Frontier deal was found by Cheapflights users on 6/20. 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.
Sun 6/286:00 am
SFO
- STL
1 stop10h 53m
Frontier
Wed 7/88:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/20![Frontier logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 8/126:00 am
SFO
- STL
1 stop11h 23m
Frontier
Thu 8/138:08 pm
STL
- SFO
2 stops14h 35m
Frontier
Deal found 6/21![Frontier logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/2711:00 pm
SFO
- STL
2 stops18h 23m
Frontier
Thu 7/306:34 pm
STL
- SFO
1 stop26h 44m
Frontier
Deal found 6/22![Frontier logo]()
$402
This Expedia deal was found by Cheapflights users on 6/21. 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.
Thu 8/1310:10 pm
SFO
- STL
1 stop8h 47m
Multiple Airlines
Mon 8/173:32 pm
STL
- SFO
2 stops9h 36m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/110:58 pm
SFO
- STL
2 stops16h 32m
Frontier
Thu 7/167:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Deal found 6/18![Frontier logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 8/147:08 pm
SFO
- STL
2 stops17h 48m
Frontier
Sun 8/168:08 pm
STL
- SFO
1 stop6h 10m
Frontier
Deal found 6/18![Frontier logo]()
$406
This Frontier deal was found by Cheapflights users on 6/19. 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.
Sun 10/46:00 am
SFO
- STL
1 stop11h 15m
Frontier
Sat 10/108:10 pm
STL
- SFO
1 stop6h 05m
Frontier
Deal found 6/19![Frontier logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 9/307:30 pm
SFO
- STL
2 stops12h 10m
Frontier
Sat 10/312:46 pm
STL
- SFO
1 stop12h 59m
Frontier
Deal found 6/19![Frontier logo]()
$408
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 June 23, 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 June 23, 2026.
This United Airlines deal was found by Cheapflights users on 6/20. 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 8/411:30 pm
SFO
- STL
1 stop9h 04m
United Airlines
Thu 8/67:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/20![United Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 6/21. 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.
Thu 8/136:00 am
SFO
- STL
2 stops9h 55m
Southwest
Mon 8/173:45 pm
STL
- SFO
2 stops7h 55m
Southwest
Deal found 6/21![Southwest logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 6/19. 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 8/116:00 am
SFO
- STL
2 stops10h 05m
Alaska Airlines
Wed 8/198:36 am
STL
- SFO
2 stops10h 46m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 6/20. 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.
Mon 8/178:59 pm
SFO
- STL
2 stops11h 24m
Delta
Sat 8/223:44 pm
STL
- SFO
1 stop10h 14m
Delta
Deal found 6/20![Delta logo]()
$498
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Fri 7/1712:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Sat 7/185:10 am
STL
- SFO
1 stop6h 08m
United Airlines
Deal found 6/22![United Airlines logo]()
$460
This Southwest deal was found by Cheapflights users on 6/21. 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
SFO
- STL
Nonstop3h 50m
Southwest
Mon 8/318:25 am
STL
- SFO
Nonstop4h 10m
Southwest
Deal found 6/21![Southwest logo]()
$465
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Sat 7/1112:50 am
SFO
- STL
1 stop7h 44m
United Airlines
Sat 7/187:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/19![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 6/18. 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.
Thu 8/2012:00 pm
SFO
- STL
Nonstop3h 50m
Southwest
Sun 8/236:15 am
STL
- SFO
1 stop6h 00m
Southwest
Deal found 6/18![Southwest logo]()
$510
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/1412:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Wed 7/157:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/19![United Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 6/20. 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 7/1612:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Sun 7/197:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/20![United Airlines logo]()
$516
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Fri 7/3112:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Sun 8/27:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/20![United Airlines logo]()
$516
Last-minute flights from San Francisco to St. LouisDiscover last-minute flight deals from San Francisco to St. Louis. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to St. Louis. Data last updated June 23, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/18. 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 6/276:00 am
SFO
- STL
1 stop10h 53m
Frontier
Mon 7/138:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/18![Frontier logo]()
$399
This Frontier deal was found by Cheapflights users on 6/20. 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.
Sun 6/286:00 am
SFO
- STL
1 stop10h 53m
Frontier
Sat 7/113:41 pm
STL
- SFO
1 stop9h 18m
Frontier
Deal found 6/20![Frontier logo]()
$394
This Frontier deal was found by Cheapflights users on 6/20. 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.
Sun 6/286:00 am
SFO
- STL
1 stop10h 53m
Frontier
Wed 7/88:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/20![Frontier logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/110:58 pm
SFO
- STL
2 stops16h 32m
Frontier
Thu 7/167:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Deal found 6/18![Frontier logo]()
$405
This Travelocity deal was found by Cheapflights users on 6/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:39 pm
SFO
- STL
1 stop15h 27m
Frontier
Sun 7/57:10 pm
STL
- SFO
1 stop26h 42m
Frontier
Deal found 6/18![Frontier logo]()
$414
This Mytrip deal was found by Cheapflights users on 6/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Fri 7/108:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/20![Frontier logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/186:00 am
SFO
- STL
1 stop11h 23m
Frontier
Sun 7/197:10 pm
STL
- SFO
2 stops23h 01m
Frontier
Deal found 6/20![Frontier logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/2310:23 pm
SFO
- STL
2 stops19h 00m
Frontier
Sun 7/267:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Deal found 6/20![Frontier logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 7/2411:00 pm
SFO
- STL
2 stops18h 23m
Frontier
Sun 7/267:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Deal found 6/20![Frontier logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/2711:00 pm
SFO
- STL
2 stops18h 23m
Frontier
Thu 7/306:34 pm
STL
- SFO
1 stop26h 44m
Frontier
Deal found 6/22![Frontier logo]()
$402
This United Airlines deal was found by Cheapflights users on 6/20. 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 7/2811:59 pm
SFO
- STL
1 stop8h 08m
United Airlines
Tue 8/47:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 6/20![United Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 6/22. 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.
Wed 7/298:25 am
SFO
- STL
1 stop7h 15m
Southwest
Wed 7/296:55 pm
STL
- SFO
1 stop6h 25m
Southwest
Deal found 6/22![Southwest logo]()
$417
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 June 23, 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 June 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/77:28 pm
SFO
- STL
2 stops20h 37m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 7/109:00 pm
SFO
- STL
1 stop19h 15m
Frontier
Deal found 6/21![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 6/21. 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 9/186:00 am
SFO
- STL
1 stop11h 15m
Frontier
Deal found 6/21![Frontier logo]()
$188
This Alaska Airlines deal was found by Cheapflights users on 6/19. 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 12/152:45 pm
SFO
- STL
1 stop7h 14m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$189
This Super.com deal was found by Cheapflights users on 6/19. 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.
Fri 7/310:10 pm
SFO
- STL
1 stop8h 42m
Frontier
Deal found 6/19![Frontier logo]()
$190
This Super.com deal was found by Cheapflights users on 6/23. 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.
Sun 7/1210:10 pm
SFO
- STL
1 stop8h 47m
Frontier
Deal found 6/23![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 8/114:30 pm
SFO
- STL
2 stops14h 27m
Frontier
Deal found 6/22![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 9/166:30 am
SFO
- STL
2 stops25h 10m
Frontier
Deal found 6/21![Frontier logo]()
$194
This Priceline deal was found by Cheapflights users on 6/21. 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 7/910:10 pm
SFO
- STL
1 stop8h 47m
Frontier
Deal found 6/21![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 8/149:30 pm
SFO
- STL
2 stops19h 53m
Frontier
Deal found 6/22![Frontier logo]()
$196
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 June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $394 (Frontier) |
One-way from | $184 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $546 |
Good round-trip deal | $486 or less |
Good one-way deal | $259 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 June 23, 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 - STL
SFOSTL
San Francisco
Tue 8/4
11:30 pm-10:34 am
1 stop9h 04m
Lambert-St Louis
Thu 8/6
7:23 pm-9:43 pm
Nonstop4h 20m
$422
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 8/13
6:00 am-5:55 pm
2 stops9h 55m
Lambert-St Louis
Mon 8/17
3:45 pm-9:40 pm
2 stops7h 55m
$457
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 7/17
12:12 pm-6:17 pm
Nonstop4h 05m
Lambert-St Louis
Sat 7/18
5:10 am-9:18 am
1 stop6h 08m
$460
Quickest round-trip
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 8/28
12:00 pm-5:50 pm
Nonstop3h 50m
Lambert-St Louis
Mon 8/31
8:25 am-10:35 am
Nonstop4h 10m
$465
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Sat 7/11
12:50 am-10:34 am
1 stop7h 44m
Lambert-St Louis
Sat 7/18
7:23 pm-9:43 pm
Nonstop4h 20m
$473
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 8/11
6:00 am-6:05 pm
2 stops10h 05m
Lambert-St Louis
Wed 8/19
8:36 am-5:22 pm
2 stops10h 46m
$487
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 7/14
12:12 pm-6:17 pm
Nonstop4h 05m
Lambert-St Louis
Wed 7/15
7:23 pm-9:43 pm
Nonstop4h 20m
$497
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Mon 8/17
8:59 pm-10:23 am
2 stops11h 24m
Lambert-St Louis
Sat 8/22
3:44 pm-11:58 pm
1 stop10h 14m
$498
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 8/20
12:00 pm-5:50 pm
Nonstop3h 50m
Lambert-St Louis
Sun 8/23
6:15 am-10:15 am
1 stop6h 00m
$510
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 7/16
12:12 pm-6:17 pm
Nonstop4h 05m
Lambert-St Louis
Sun 7/19
7:23 pm-9:43 pm
Nonstop4h 20m
$516
Showing 1-10 of 21 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 June.
| 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 $412). 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 June 23, 2026.
It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 53% 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 June 23, 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.
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
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
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from San Francisco
Popular flights
St. Louis flight routes
Alternative routes for San Francisco to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to St. Louis by cabin class
Find flights from San Francisco to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and St. Louis flights
Browse other San Francisco and St. Louis flight options. Last updated on June 23, 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 June 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 June 23, 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$314 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$208 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$216 | Average$502 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$324 | Average$576 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$567 | FlexibilityNo cancel fee | On-time63% |