$79+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Apr 24 — May 11
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 79 days in advance, depart on a Thursday or Wednesday and return on a Thursday
Cheap flight deals from San Francisco to St. Louis
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Best
Last-minute
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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 March 25, 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 March 25, 2026.
This Frontier deal was found by Cheapflights users on 3/20. 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 3/2210:40 pm
SFO
- STL
1 stop12h 54m
Frontier
Tue 3/2411:27 am
STL
- SFO
1 stop9h 47m
Frontier
Deal found 3/20![Frontier logo]()
$375
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/1411:25 am
SFO
- STL
2 stops8h 20m
Southwest
Sat 4/256:10 am
STL
- SFO
2 stops11h 15m
Southwest
Deal found 3/24![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 3/24. 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 4/1510:32 am
SFO
- STL
2 stops11h 53m
Delta
Mon 4/202:20 pm
STL
- SFO
2 stops11h 17m
Delta
Deal found 3/24![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 3/22. 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.
Fri 4/1711:25 pm
SFO
- STL
1 stop9h 05m
Southwest
Tue 4/218:35 am
STL
- SFO
Nonstop4h 25m
Southwest
Deal found 3/22![Southwest logo]()
$395
This Frontier deal was found by Cheapflights users on 3/24. 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 7/1811:52 pm
SFO
- STL
1 stop12h 56m
Frontier
Sun 7/198:08 pm
STL
- SFO
1 stop6h 14m
Frontier
Deal found 3/24![Frontier logo]()
$397
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:57 pm
SFO
- STL
1 stop10h 30m
Frontier
Sat 4/118:16 pm
STL
- SFO
1 stop6h 12m
Frontier
Deal found 3/23![Frontier logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Sun 4/51:44 pm
SFO
- STL
2 stops18h 04m
Frontier
Fri 4/179:55 pm
STL
- SFO
1 stop17h 57m
Frontier
Deal found 3/21![Frontier logo]()
$402
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 4/171:28 pm
SFO
- STL
1 stop6h 49m
American Airlines
Tue 4/2112:27 pm
STL
- SFO
1 stop8h 48m
American Airlines
Deal found 3/24![American Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 3/317:32 pm
SFO
- STL
2 stops12h 16m
Frontier
Thu 4/210:12 pm
STL
- SFO
1 stop17h 58m
Frontier
Deal found 3/24![Frontier logo]()
$406
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/1512:00 pm
SFO
- STL
Nonstop4h 24m
United Airlines
Sat 4/187:05 pm
STL
- SFO
Nonstop4h 45m
United Airlines
Deal found 3/24![United Airlines logo]()
$407
This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:59 am
SFO
- STL
1 stop12h 00m
Alaska Airlines
Sat 4/187:00 am
STL
- SFO
1 stop9h 01m
Alaska Airlines
Deal found 3/24![Alaska Airlines 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 March 25, 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 March 25, 2026.
This Delta deal was found by Cheapflights users on 3/24. 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 4/1510:32 am
SFO
- STL
2 stops11h 53m
Delta
Mon 4/202:20 pm
STL
- SFO
2 stops11h 17m
Delta
Deal found 3/24![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 3/22. 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.
Fri 4/1711:25 pm
SFO
- STL
1 stop9h 05m
Southwest
Tue 4/218:35 am
STL
- SFO
Nonstop4h 25m
Southwest
Deal found 3/22![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Mon 6/112:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Fri 6/267:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 3/20![United Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:32 am
SFO
- STL
2 stops11h 53m
Delta
Wed 5/62:20 pm
STL
- SFO
2 stops11h 17m
Delta
Deal found 3/22![Delta logo]()
$435
This Southwest deal was found by Cheapflights users on 3/21. 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 4/2310:55 pm
SFO
- STL
1 stop7h 00m
Southwest
Mon 4/278:25 am
STL
- SFO
Nonstop4h 20m
Southwest
Deal found 3/21![Southwest logo]()
$463
This Delta deal was found by Cheapflights users on 3/24. 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 5/410:32 am
SFO
- STL
2 stops11h 53m
Delta
Fri 5/82:27 pm
STL
- SFO
2 stops11h 38m
Delta
Deal found 3/24![Delta logo]()
$455
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Mon 5/1811:20 pm
SFO
- STL
Nonstop4h 27m
United Airlines
Thu 5/217:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Deal found 3/19![United Airlines logo]()
$530
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:55 am
SFO
- STL
2 stops11h 05m
Southwest
Sat 4/2510:35 am
STL
- SFO
2 stops10h 20m
Southwest
Deal found 3/20![Southwest logo]()
$483
This Southwest deal was found by Cheapflights users on 3/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:15 pm
SFO
- STL
2 stops7h 25m
Southwest
Mon 5/113:50 pm
STL
- SFO
2 stops10h 20m
Southwest
Deal found 3/23![Southwest logo]()
$529
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:30 pm
SFO
- STL
2 stops10h 16m
Delta
Thu 5/212:27 pm
STL
- SFO
1 stop9h 03m
Delta
Deal found 3/22![Delta logo]()
$542
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:05 am
SFO
- STL
2 stops10h 50m
Southwest
Fri 4/245:45 am
STL
- SFO
2 stops9h 40m
Southwest
Deal found 3/19![Southwest logo]()
$533
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/412:15 pm
SFO
- STL
Nonstop3h 50m
Southwest
Fri 5/88:25 am
STL
- SFO
Nonstop4h 20m
Southwest
Deal found 3/20![Southwest logo]()
$556
Last-minute flights from San Francisco to St. LouisDiscover last-minute flight deals from San Francisco to St. Louis. Data last updated March 25, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to St. Louis. Data last updated March 25, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 3/24. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2810:38 pm
SFO
- STL
1 stop9h 53m
Frontier
Mon 3/308:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Deal found 3/24![Frontier logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 3/317:32 pm
SFO
- STL
2 stops12h 16m
Frontier
Thu 4/210:12 pm
STL
- SFO
1 stop17h 58m
Frontier
Deal found 3/24![Frontier logo]()
$406
This CheapOair deal was found by Cheapflights users on 3/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:14 pm
SFO
- STL
1 stop21h 03m
Frontier
Sun 4/510:12 pm
STL
- SFO
1 stop17h 58m
Frontier
Deal found 3/22![Frontier logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Sun 4/51:44 pm
SFO
- STL
2 stops18h 04m
Frontier
Fri 4/179:55 pm
STL
- SFO
1 stop17h 57m
Frontier
Deal found 3/21![Frontier logo]()
$402
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:57 pm
SFO
- STL
1 stop10h 30m
Frontier
Sat 4/118:16 pm
STL
- SFO
1 stop6h 12m
Frontier
Deal found 3/23![Frontier logo]()
$400
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/1411:25 am
SFO
- STL
2 stops8h 20m
Southwest
Sat 4/256:10 am
STL
- SFO
2 stops11h 15m
Southwest
Deal found 3/24![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 3/24. 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 4/1510:32 am
SFO
- STL
2 stops11h 53m
Delta
Mon 4/202:20 pm
STL
- SFO
2 stops11h 17m
Delta
Deal found 3/24![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/1512:00 pm
SFO
- STL
Nonstop4h 24m
United Airlines
Sat 4/187:05 pm
STL
- SFO
Nonstop4h 45m
United Airlines
Deal found 3/24![United Airlines logo]()
$407
This CheapOair deal was found by Cheapflights users on 3/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:59 am
SFO
- STL
1 stop12h 00m
Alaska Airlines
Sat 4/187:00 am
STL
- SFO
1 stop9h 01m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 3/22. 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.
Fri 4/1711:25 pm
SFO
- STL
1 stop9h 05m
Southwest
Tue 4/218:35 am
STL
- SFO
Nonstop4h 25m
Southwest
Deal found 3/22![Southwest logo]()
$395
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 4/171:28 pm
SFO
- STL
1 stop6h 49m
American Airlines
Tue 4/2112:27 pm
STL
- SFO
1 stop8h 48m
American Airlines
Deal found 3/24![American Airlines logo]()
$404
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 March 25, 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 March 25, 2026.
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1910:15 pm
SFO
- STL
1 stop8h 40m
Frontier
Deal found 3/20![Frontier logo]()
$79
This Orbitz deal was found by Cheapflights users on 3/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:15 pm
SFO
- STL
1 stop8h 40m
Frontier
Deal found 3/21![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:00 am
SFO
- STL
1 stop25h 48m
Frontier
Deal found 3/20![Frontier logo]()
$85
This Expedia deal was found by Cheapflights users on 3/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
SFO
- STL
1 stop11h 21m
Frontier
Deal found 3/23![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 3/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:16 pm
SFO
- STL
1 stop19h 50m
Frontier
Deal found 3/23![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:20 am
SFO
- STL
1 stop22h 07m
Frontier
Deal found 3/20![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 3/20. 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 5/1710:15 pm
SFO
- STL
1 stop8h 40m
Frontier
Deal found 3/20![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 3/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
SFO
- STL
1 stop11h 32m
Frontier
Deal found 3/22![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 3/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 am
SFO
- STL
1 stop11h 21m
Frontier
Deal found 3/20![Frontier logo]()
$110
This Booking.com deal was found by Cheapflights users on 3/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:00 pm
SFO
- STL
1 stop10h 48m
Frontier
Deal found 3/23![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 3/20. 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.
Wed 4/2210:38 pm
SFO
- STL
1 stop9h 52m
Frontier
Deal found 3/20![Frontier logo]()
$125
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 March 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $375 (Orbitz) |
One-way from | $79 (Super.com) |
Popular in | February |
Cheapest in | September |
Average price | $581 |
Good round-trip deal | $489 or less |
Good one-way deal | $240 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 March 25, 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
Wed 4/15
10:32 am-12:25 am
2 stops11h 53m
Lambert-St Louis
Mon 4/20
2:20 pm-11:37 pm
2 stops11h 17m
$389
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 4/17
11:25 pm-10:30 am
1 stop9h 05m
Lambert-St Louis
Tue 4/21
8:35 am-11:00 am
Nonstop4h 25m
$395
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Tue 4/28
10:32 am-12:25 am
2 stops11h 53m
Lambert-St Louis
Wed 5/6
2:20 pm-11:37 pm
2 stops11h 17m
$435
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Mon 5/4
10:32 am-12:25 am
2 stops11h 53m
Lambert-St Louis
Fri 5/8
2:27 pm-12:05 am
2 stops11h 38m
$455
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Thu 4/23
10:55 pm-7:55 am
1 stop7h 00m
Lambert-St Louis
Mon 4/27
8:25 am-10:45 am
Nonstop4h 20m
$463
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Wed 4/22
8:55 am-10:00 pm
2 stops11h 05m
Lambert-St Louis
Sat 4/25
10:35 am-6:55 pm
2 stops10h 20m
$483
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Mon 6/1
12:12 pm-6:17 pm
Nonstop4h 05m
Lambert-St Louis
Fri 6/26
7:23 pm-9:43 pm
Nonstop4h 20m
$487
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 5/8
1:15 pm-10:40 pm
2 stops7h 25m
Lambert-St Louis
Mon 5/11
3:50 pm-12:10 am
2 stops10h 20m
$529
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Mon 5/18
11:20 pm-5:47 am
Nonstop4h 27m
Lambert-St Louis
Thu 5/21
7:23 pm-9:43 pm
Nonstop4h 20m
$530
San FranciscoSt. Louis
SFO - STL
SFOSTL
San Francisco
Fri 4/17
8:05 am-8:55 pm
2 stops10h 50m
Lambert-St Louis
Fri 4/24
5:45 am-1:25 pm
2 stops9h 40m
$533
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 March.
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| 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 March 13, 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 $122). 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 March 25, 2026.
It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 39% 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 March 25, 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.
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
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 March 25, 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 March 25, 2026.
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Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 25, 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 March 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$189 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$386 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$300 | Average$491 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$535 | FlexibilityNo cancel fee | On-time63% |