$110+ Cheap flights from St. Louis to San Francisco (STL - SFO)
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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to San Francisco 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
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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 Lambert-St Louis to San Francisco are usually found in October or August, booked 55 days in advance, depart on a Friday or Thursday and return on a Thursday
Cheap flight deals from St. Louis to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to San FranciscoExplore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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.
Thu 11/127:30 am
STL
- SFO
2 stops10h 32m
Delta
Mon 11/168:05 pm
SFO
- STL
2 stops10h 43m
Delta
Deal found 7/20![Delta logo]()
$334
This Delta deal was found by Cheapflights users on 7/20. 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.
Fri 8/282:32 pm
STL
- SFO
2 stops11h 18m
Delta
Wed 9/28:59 pm
SFO
- STL
2 stops9h 38m
Delta
Deal found 7/20![Delta logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/108:08 pm
STL
- SFO
1 stop6h 10m
Frontier
Wed 8/1210:07 pm
SFO
- STL
2 stops19h 16m
Frontier
Deal found 7/22![Frontier logo]()
$349
This Travelocity deal was found by Cheapflights users on 7/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:46 pm
STL
- SFO
1 stop26h 31m
Frontier
Sun 10/410:48 pm
SFO
- STL
1 stop8h 52m
Frontier
Deal found 7/21![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/118:08 pm
STL
- SFO
2 stops16h 17m
Frontier
Thu 8/136:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 7/22![Frontier logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/1610:35 am
STL
- SFO
2 stops33h 05m
Frontier
Sun 10/184:51 pm
SFO
- STL
1 stop6h 26m
Frontier
Deal found 7/21![Frontier logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:36 pm
STL
- SFO
1 stop16h 01m
Alaska Airlines
Tue 9/299:13 pm
SFO
- STL
2 stops17h 57m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 7/22. 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.
Wed 10/145:28 pm
STL
- SFO
1 stop8h 47m
Delta
Wed 10/216:00 am
SFO
- STL
2 stops9h 34m
Delta
Deal found 7/22![Delta logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:10 pm
STL
- SFO
2 stops21h 46m
Frontier
Sun 10/2510:48 pm
SFO
- STL
1 stop8h 52m
Frontier
Deal found 7/23![Frontier logo]()
$356
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 10/227:08 am
STL
- SFO
Nonstop4h 22m
United Airlines
Mon 10/264:20 pm
SFO
- STL
Nonstop3h 50m
United Airlines
Deal found 7/22![United Airlines logo]()
$357
Best flights from St. Louis to San FranciscoDiscover carefully curated flight deals from St. Louis to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from St. Louis to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Southwest deal was found by Cheapflights users on 7/20. 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.
Thu 11/198:25 am
STL
- SFO
Nonstop4h 20m
Southwest
Tue 12/111:25 am
SFO
- STL
1 stop8h 30m
Southwest
Deal found 7/20![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 7/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am
STL
- SFO
1 stop6h 39m
Delta
Mon 11/168:05 pm
SFO
- STL
2 stops10h 43m
Delta
Deal found 7/21![Delta logo]()
$383
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 10/227:08 am
STL
- SFO
Nonstop4h 22m
United Airlines
Sun 10/2512:55 am
SFO
- STL
1 stop7h 37m
United Airlines
Deal found 7/24![United Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:08 pm
STL
- SFO
1 stop7h 20m
Alaska Airlines
Wed 9/28:23 am
SFO
- STL
1 stop6h 47m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 7/24. 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 10/208:30 am
STL
- SFO
Nonstop4h 20m
Southwest
Thu 10/2211:45 am
SFO
- STL
1 stop6h 00m
Southwest
Deal found 7/24![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 7/21. 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.
Tue 8/188:25 am
STL
- SFO
Nonstop4h 10m
Southwest
Tue 8/252:00 pm
SFO
- STL
1 stop6h 45m
Southwest
Deal found 7/21![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 7/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:47 pm
STL
- SFO
1 stop8h 06m
Delta
Mon 10/58:59 pm
SFO
- STL
2 stops10h 04m
Delta
Deal found 7/21![Delta logo]()
$443
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 10/156:15 am
STL
- SFO
1 stop7h 29m
United Airlines
Mon 10/1912:45 pm
SFO
- STL
Nonstop3h 58m
United Airlines
Deal found 7/22![United Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 7/24. 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 9/228:25 am
STL
- SFO
1 stop7h 25m
Southwest
Sat 9/266:40 am
SFO
- STL
2 stops6h 55m
Southwest
Deal found 7/24![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 10/155:05 am
STL
- SFO
2 stops8h 15m
Southwest
Sat 10/175:00 am
SFO
- STL
2 stops9h 05m
Southwest
Deal found 7/24![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 9/118:25 am
STL
- SFO
Nonstop4h 10m
Southwest
Sat 9/269:25 am
SFO
- STL
Nonstop3h 50m
Southwest
Deal found 7/24![Southwest logo]()
$417
Last-minute flights from St. Louis to San FranciscoDiscover last-minute flight deals from St. Louis to San Francisco. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San Francisco. Data last updated July 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/83:41 pm
STL
- SFO
1 stop9h 13m
Frontier
Fri 8/2112:29 am
SFO
- STL
2 stops38h 53m
Frontier
Deal found 7/20![Frontier logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/108:08 pm
STL
- SFO
1 stop6h 10m
Frontier
Wed 8/1210:07 pm
SFO
- STL
2 stops19h 16m
Frontier
Deal found 7/22![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/118:08 pm
STL
- SFO
2 stops16h 17m
Frontier
Thu 8/136:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 7/22![Frontier logo]()
$351
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:08 pm
STL
- SFO
1 stop6h 10m
Frontier
Sat 8/1512:54 am
SFO
- STL
1 stop12h 02m
Frontier
Deal found 7/22![Frontier logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:56 pm
STL
- SFO
1 stop15h 24m
Alaska Airlines
Wed 8/193:03 pm
SFO
- STL
1 stop24h 07m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 8/208:42 am
STL
- SFO
Nonstop4h 22m
United Airlines
Thu 8/2712:00 pm
SFO
- STL
Nonstop3h 59m
United Airlines
Deal found 7/22![United Airlines logo]()
$357
This Frontier deal was found by Cheapflights users on 7/24. 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.
Fri 8/217:58 pm
STL
- SFO
1 stop6h 20m
Frontier
Fri 8/286:00 am
SFO
- STL
1 stop11h 13m
Frontier
Deal found 7/24![Frontier logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Tue 8/256:45 pm
STL
- SFO
1 stop17h 40m
Frontier
Mon 8/311:07 pm
SFO
- STL
2 stops25h 24m
Frontier
Deal found 7/20![Frontier logo]()
$355
This Expedia deal was found by Cheapflights users on 7/21. 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.
Tue 8/256:35 am
STL
- SFO
2 stops12h 47m
Alaska Airlines
Tue 9/89:13 pm
SFO
- STL
2 stops17h 57m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 7/20. 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.
Fri 8/282:32 pm
STL
- SFO
2 stops11h 18m
Delta
Wed 9/28:59 pm
SFO
- STL
2 stops9h 38m
Delta
Deal found 7/20![Delta logo]()
$339
One-way flights from St. Louis to San FranciscoSearch for one-way flight options from St. Louis to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from St. Louis to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/247:58 pm
STL
- SFO
2 stops26h 42m
Frontier
Deal found 7/22![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/208:10 pm
STL
- SFO
2 stops27h 08m
Frontier
Deal found 7/22![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Mon 8/178:08 pm
STL
- SFO
2 stops26h 32m
Frontier
Deal found 7/21![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 7/22. 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.
Tue 9/15:27 pm
STL
- SFO
1 stop7h 27m
Frontier
Deal found 7/22![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:10 pm
STL
- SFO
2 stops21h 46m
Frontier
Deal found 7/23![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Thu 9/108:10 pm
STL
- SFO
2 stops27h 08m
Frontier
Deal found 7/21![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 7/23. 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.
Tue 9/2210:35 am
STL
- SFO
1 stop9h 45m
Frontier
Deal found 7/23![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 7/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:35 am
STL
- SFO
1 stop9h 45m
Frontier
Deal found 7/22![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 7/20. 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 8/277:58 pm
STL
- SFO
1 stop6h 20m
Frontier
Deal found 7/20![Frontier logo]()
$131
Find flight deals from St. Louis to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Francisco (SFO). 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 July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Delta) |
One-way from | $110 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $509 |
Good round-trip deal | $458 or less |
Good one-way deal | $244 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to San Francisco 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 July 25, 2026.
Use the filters below to find and compare flights from St. Louis to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 11/19
8:25 am-10:45 am
Nonstop4h 20m
San Francisco
Tue 12/1
11:25 am-9:55 pm
1 stop8h 30m
$367
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 10/20
8:30 am-10:50 am
Nonstop4h 20m
San Francisco
Thu 10/22
11:45 am-7:45 pm
1 stop6h 00m
$367
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 8/18
8:25 am-10:35 am
Nonstop4h 10m
San Francisco
Tue 8/25
2:00 pm-10:45 pm
1 stop6h 45m
$367
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 9/22
8:25 am-1:50 pm
1 stop7h 25m
San Francisco
Sat 9/26
6:40 am-3:35 pm
2 stops6h 55m
$382
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 11/12
6:30 am-11:09 am
1 stop6h 39m
San Francisco
Mon 11/16
8:05 pm-8:48 am
2 stops10h 43m
$383
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 10/15
5:05 am-11:20 am
2 stops8h 15m
San Francisco
Sat 10/17
5:00 am-4:05 pm
2 stops9h 05m
$387
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 10/22
7:08 am-9:30 am
Nonstop4h 22m
San Francisco
Sun 10/25
12:55 am-10:32 am
1 stop7h 37m
$394
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Fri 8/28
6:08 pm-11:28 pm
1 stop7h 20m
San Francisco
Wed 9/2
8:23 am-5:10 pm
1 stop6h 47m
$395
Quickest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Fri 9/11
8:25 am-10:35 am
Nonstop4h 10m
San Francisco
Sat 9/26
9:25 am-3:15 pm
Nonstop3h 50m
$417
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 9/17
5:47 pm-11:53 pm
1 stop8h 06m
San Francisco
Mon 10/5
8:59 pm-9:03 am
2 stops10h 04m
$443
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from St. Louis to San Francisco
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 St. Louis to San Francisco in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-San Francisco 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 St. Louis-San Francisco 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 St. Louis to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from St. Louis with our price prediction graph.
STL-SFO
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 St. Louis to San Francisco
Prices
Airlines
How far ahead should I book a flight from St. Louis to San Francisco?
The best time to book flights from St. Louis to San Francisco is 54 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from St. Louis to San Francisco?
Currently, October is the cheapest month in which you can book a flight from St. Louis to San Francisco (average of $347). Flying from St. Louis to San Francisco in March is currently the most expensive (average of $543). 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 STL to SFO?
Find hourly flight availability from St. Louis to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.
It’s typically best to fly out from St. Louis to San Francisco in the morning. Doing so could potentially save you 39% on the flight price compared to flying in the evening, which is usually more expensive.
The best insider tips for St. Louis to San Francisco 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 St. Louis to San Francisco trip
Our travel experts
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated July 25, 2026.
Read through reviews of airlines operating flights from St. Louis to San Francisco, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to San Francisco. 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 San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Fairfield
Roseville
Burlingame
Rancho Cordova
San Bruno
Cupertino
Emeryville
Newark
Watsonville
Hayward
Redwood City
San Carlos
San Ramon
Turlock
Vallejo
San Lorenzo
Davis
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St. Louis and San Francisco flights
Browse other St. Louis and San Francisco flight options. Last updated on July 25, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on July 25, 2026.
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Top 5 airlines flying from St. Louis to San Francisco
Discover the top 5 airlines that operate flights from St. Louis to San Francisco. 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$150 | Average$285 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$182 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$327 | Average$531 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$338 | Average$527 | FlexibilityNo cancel fee | On-time63% |