$102+ Cheap flights from St. Louis to San Francisco (STL - SFO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Nov 25 — Dec 21
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
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 Lambert-St Louis to San Francisco are usually found in January or April, booked 75 days in advance, depart on a Thursday or Friday and return on a Wednesday
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 October 26, 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 October 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 11/186:34 pm -
2 stops18h 43m
Sat 11/2111:29 pm -
1 stop6h 25m
Deal found 10/22![Frontier logo]()
$372
This Southwest deal was found by Cheapflights users on 10/22. 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.
Tue 11/101:40 pm -
1 stop7h 10m
Sat 11/1411:35 pm -
1 stop8h 30m
Deal found 10/22![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 10/21. 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.
Tue 11/107:00 pm -
1 stop6h 59m
Thu 11/1211:59 pm -
1 stop7h 04m
Deal found 10/21![Delta logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sat 11/77:59 pm -
1 stop6h 21m
Thu 11/196:02 am -
2 stops10h 37m
Deal found 10/22![Frontier logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/137:59 pm -
1 stop6h 21m
Fri 11/2011:41 am -
2 stops21h 22m
Deal found 10/21![Frontier logo]()
$377
This Southwest deal was found by Cheapflights users on 10/21. 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 11/101:40 pm -
1 stop7h 10m
Fri 11/138:30 am -
2 stops8h 40m
Deal found 10/21![Southwest logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/184:18 pm -
1 stop10h 02m
Fri 11/207:25 pm -
1 stop13h 38m
Deal found 10/21![Frontier logo]()
$379
This Frontier deal was found by Cheapflights users on 10/22. 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 10/317:59 pm -
1 stop6h 21m
Thu 11/510:23 pm -
1 stop12h 10m
Deal found 10/22![Frontier logo]()
$380
This Delta deal was found by Cheapflights users on 10/22. 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 11/175:48 pm -
1 stop8h 10m
Wed 11/187:05 am -
2 stops12h 13m
Deal found 10/22![Delta logo]()
$381
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:59 pm -
1 stop6h 21m
Sun 11/82:21 pm -
1 stop20h 12m
Deal found 10/21![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/51:28 pm -
1 stop20h 51m
Sat 11/149:14 am -
2 stops8h 00m
Deal found 10/21![Frontier logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 11/81:28 pm -
1 stop20h 51m
Sun 11/156:02 am -
2 stops27h 17m
Deal found 10/22![Frontier logo]()
$384
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 October 26, 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 October 26, 2026.
This Southwest deal was found by Cheapflights users on 10/21. 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 11/105:55 am -
2 stops11h 00m
Fri 11/136:50 am -
2 stops10h 20m
Deal found 10/21![Southwest logo]()
$383
This Delta deal was found by Cheapflights users on 10/24. 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.
Tue 12/82:15 pm -
2 stops11h 28m
Fri 12/1110:40 pm -
1 stop8h 39m
Deal found 10/24![Delta logo]()
$435
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/48:17 am -
Nonstop4h 38m
Sat 12/1212:20 pm -
Nonstop3h 51m
Deal found 10/25![United Airlines logo]()
$437
This Alaska Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:00 am -
2 stops11h 48m
Mon 11/237:20 am -
2 stops14h 39m
Deal found 10/25![Alaska Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 10/26. 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 2/118:40 am -
Nonstop4h 40m
Tue 2/1612:25 pm -
Nonstop3h 52m
Deal found 10/26![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 10/24. 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.
Wed 12/26:35 am -
1 stop9h 15m
Tue 12/811:15 am -
Nonstop3h 55m
Deal found 10/24![Southwest logo]()
$447
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/38:17 am -
Nonstop4h 38m
Wed 12/912:45 am -
1 stop7h 00m
Deal found 10/25![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 10/21. 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 12/38:25 am -
Nonstop4h 25m
Sun 12/61:05 pm -
Nonstop3h 50m
Deal found 10/21![Southwest logo]()
$448
This Southwest deal was found by Cheapflights users on 10/21. 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 12/48:25 am -
Nonstop4h 25m
Sun 12/61:05 pm -
Nonstop3h 50m
Deal found 10/21![Southwest logo]()
$448
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm -
Nonstop4h 36m
Sat 11/2112:15 pm -
Nonstop3h 50m
Deal found 10/21![United Airlines logo]()
$477
This Southwest deal was found by Cheapflights users on 10/25. 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 1/208:45 am -
Nonstop4h 30m
Sun 1/2410:20 am -
Nonstop4h 00m
Deal found 10/25![Southwest logo]()
$482
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:05 pm -
Nonstop4h 36m
Sun 11/2212:45 am -
1 stop7h 17m
Deal found 10/21![United Airlines logo]()
$485
Last-minute flights from St. Louis to San FranciscoDiscover last-minute flight deals from St. Louis to San Francisco. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San Francisco. Data last updated October 26, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 10/22. 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 10/317:59 pm -
1 stop6h 21m
Thu 11/510:23 pm -
1 stop12h 10m
Deal found 10/22![Frontier logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/51:28 pm -
1 stop20h 51m
Sat 11/149:14 am -
2 stops8h 00m
Deal found 10/21![Frontier logo]()
$383
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:59 pm -
1 stop6h 21m
Sun 11/82:21 pm -
1 stop20h 12m
Deal found 10/21![Frontier logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sat 11/77:59 pm -
1 stop6h 21m
Thu 11/196:02 am -
2 stops10h 37m
Deal found 10/22![Frontier logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 11/81:28 pm -
1 stop20h 51m
Sun 11/156:02 am -
2 stops27h 17m
Deal found 10/22![Frontier logo]()
$384
This Southwest deal was found by Cheapflights users on 10/22. 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.
Tue 11/101:40 pm -
1 stop7h 10m
Sat 11/1411:35 pm -
1 stop8h 30m
Deal found 10/22![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 10/21. 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.
Tue 11/107:00 pm -
1 stop6h 59m
Thu 11/1211:59 pm -
1 stop7h 04m
Deal found 10/21![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 10/21. 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 11/101:40 pm -
1 stop7h 10m
Fri 11/138:30 am -
2 stops8h 40m
Deal found 10/21![Southwest logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/137:59 pm -
1 stop6h 21m
Fri 11/2011:41 am -
2 stops21h 22m
Deal found 10/21![Frontier logo]()
$377
This Delta deal was found by Cheapflights users on 10/22. 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 11/175:48 pm -
1 stop8h 10m
Wed 11/187:05 am -
2 stops12h 13m
Deal found 10/22![Delta logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 11/186:34 pm -
2 stops18h 43m
Sat 11/2111:29 pm -
1 stop6h 25m
Deal found 10/22![Frontier logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/184:18 pm -
1 stop10h 02m
Fri 11/207:25 pm -
1 stop13h 38m
Deal found 10/21![Frontier logo]()
$379
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 October 26, 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 October 26, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 10/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:59 pm -
1 stop6h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 12/225:37 pm -
1 stop15h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$103
This Cheapflightsfares deal was found by Cheapflights users on 10/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:04 pm -
1 stop11h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$107
This deal was found by Cheapflights users on 10/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:59 pm -
1 stop6h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 12/97:54 pm -
1 stop15h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$110
This CheapOair deal was found by Cheapflights users on 10/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:59 pm -
1 stop6h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Mon 3/17:02 pm -
1 stop7h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$118
This iWofly deal was found by Cheapflights users on 10/21. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:54 pm -
1 stop15h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$120
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $372 (Kiwi.com) |
One-way from | $102 (Cheapflightsfares) |
Popular in | November |
Cheapest in | January |
Average price | $516 |
Good round-trip deal | $517 or less |
Good one-way deal | $276 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 7,457,451 searches. Data last updated October 26, 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 Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Mon 12/21
4:21 pm-8:28 pm
1 stop6h 07m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$135
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Thu 12/10
6:04 am-2:12 pm
1 stop10h 08m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$168
Quickest round-trip
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Sun 12/6
10:05 am-12:25 pm
Nonstop4h 20m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$177
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Mon 11/9
8:00 am-10:36 am
Nonstop4h 36m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$178
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Sat 1/30
8:30 am-11:25 am
Nonstop4h 55m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$219
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Thu 1/21
8:45 am-11:15 am
Nonstop4h 30m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$219
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Fri 1/15
5:10 pm-7:45 pm
Nonstop4h 35m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$219
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Fri 11/13
8:00 am-10:36 am
Nonstop4h 36m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$236
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Fri 1/15
6:45 am-5:52 pm
2 stops13h 07m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$252
St. LouisSan Francisco
STL Lambert-St Louis - SFO San Francisco
STLSFO
Lambert-St Louis
Mon 12/21
11:15 am-10:08 pm
2 stops12h 53m
San Francisco
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$257
Showing 1-10 of 22 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| 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 74 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, January is the cheapest month in which you can book a flight from St. Louis to San Francisco (average of $437). Flying from St. Louis to San Francisco in November is currently the most expensive (average of $553). 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 October 26, 2026.
It’s typically best to fly out from St. Louis to San Francisco in the morning. Doing so could potentially save you 46% 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 October 26, 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
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Boarding
8.1
Comfort
8.0
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
Walnut Creek
Hayward
Emeryville
Newark
Burlingame
Rancho Cordova
Vallejo
Cupertino
Fairfield
Redwood City
Manteca
San Bruno
San Carlos
San Ramon
Turlock
Davis
Morgan Hill
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St. Louis and San Francisco flights
Browse other St. Louis and San Francisco flight options. Last updated on October 26, 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 October 26, 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 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$180 | Average$343 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$314 | Average$502 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$356 | Average$548 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$391 | Average$545 | FlexibilityNo cancel fee | On-time63% |