$99+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Jul 12 — Jul 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 August or October, 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 June 12, 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 June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:03 pm
STL
- SFO
1 stop17h 27m
Frontier
Tue 7/1410:23 pm
SFO
- STL
2 stops41h 52m
Frontier
Deal found 6/11![Frontier logo]()
$307
This Booking.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:41 pm
STL
- SFO
1 stop9h 18m
Frontier
Wed 7/159:00 pm
SFO
- STL
1 stop19h 15m
Frontier
Deal found 6/8![Frontier logo]()
$308
This Frontier deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:10 pm
STL
- SFO
1 stop17h 20m
Frontier
Tue 8/49:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Deal found 6/9![Frontier logo]()
$309
This Frontier deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:08 pm
STL
- SFO
1 stop6h 19m
Frontier
Tue 7/76:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 6/7![Frontier logo]()
$310
This Frontier deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Wed 7/86:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 6/8![Frontier logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:08 pm
STL
- SFO
1 stop6h 19m
Frontier
Mon 7/68:23 pm
SFO
- STL
2 stops19h 42m
Frontier
Deal found 6/8![Frontier logo]()
$313
This Travelocity deal was found by Cheapflights users on 6/12. 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.
Thu 9/108:10 pm
STL
- SFO
1 stop22h 47m
Frontier
Tue 9/1511:42 am
SFO
- STL
1 stop22h 09m
Frontier
Deal found 6/12![Frontier logo]()
$314
This Orbitz deal was found by Cheapflights users on 6/11. 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 8/18:08 pm
STL
- SFO
1 stop22h 44m
Frontier
Tue 8/44:30 pm
SFO
- STL
1 stop23h 35m
Frontier
Deal found 6/11![Frontier logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:38 pm
STL
- SFO
1 stop6h 49m
Frontier
Tue 7/79:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Deal found 6/10![Frontier logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 pm
STL
- SFO
1 stop15h 45m
Frontier
Fri 7/318:23 pm
SFO
- STL
2 stops19h 52m
Frontier
Deal found 6/10![Frontier logo]()
$317
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Thu 8/137:10 pm
STL
- SFO
1 stop15h 33m
Frontier
Sun 8/165:30 pm
SFO
- STL
1 stop23h 53m
Frontier
Deal found 6/11![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Tue 7/2810:23 pm
SFO
- STL
2 stops41h 52m
Frontier
Deal found 6/9![Frontier logo]()
$319
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 June 12, 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 June 12, 2026.
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Mon 7/1312:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 6/8![United Airlines logo]()
$432
This Southwest deal was found by Cheapflights users on 6/10. 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.
Sun 10/182:00 pm
STL
- SFO
2 stops9h 35m
Southwest
Wed 10/287:40 am
SFO
- STL
2 stops10h 20m
Southwest
Deal found 6/10![Southwest logo]()
$452
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:27 pm
STL
- SFO
2 stops11h 09m
Delta
Wed 10/78:05 pm
SFO
- STL
2 stops10h 43m
Delta
Deal found 6/9![Delta logo]()
$461
This Southwest deal was found by Cheapflights users on 6/11. 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.
Sat 9/198:30 am
STL
- SFO
2 stops7h 05m
Southwest
Sat 10/35:00 am
SFO
- STL
2 stops9h 35m
Southwest
Deal found 6/11![Southwest logo]()
$458
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:42 am
STL
- SFO
Nonstop4h 22m
United Airlines
Sat 8/295:00 am
SFO
- STL
1 stop8h 31m
United Airlines
Deal found 6/8![United Airlines logo]()
$466
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:10 pm
STL
- SFO
2 stops9h 05m
Southwest
Fri 7/312:15 pm
SFO
- STL
2 stops7h 40m
Southwest
Deal found 6/10![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:30 pm
STL
- SFO
1 stop9h 00m
United Airlines
Wed 8/1912:40 pm
SFO
- STL
Nonstop3h 59m
United Airlines
Deal found 6/11![United Airlines logo]()
$470
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:25 am
STL
- SFO
Nonstop4h 10m
Southwest
Wed 8/1211:50 am
SFO
- STL
Nonstop3h 50m
Southwest
Deal found 6/9![Southwest logo]()
$503
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Mon 7/2012:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 6/7![United Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Mon 8/310:38 pm
SFO
- STL
1 stop8h 01m
United Airlines
Deal found 6/9![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Wed 7/1512:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 6/10![United Airlines logo]()
$532
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/17:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Mon 7/1312:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 6/10![United Airlines logo]()
$532
Last-minute flights from St. Louis to San FranciscoDiscover last-minute flight deals from St. Louis to San Francisco. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San Francisco. Data last updated June 12, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:08 pm
STL
- SFO
1 stop6h 19m
Frontier
Tue 7/76:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 6/7![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:08 pm
STL
- SFO
1 stop6h 19m
Frontier
Mon 7/68:23 pm
SFO
- STL
2 stops19h 42m
Frontier
Deal found 6/8![Frontier logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:38 pm
STL
- SFO
1 stop6h 49m
Frontier
Tue 7/79:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Deal found 6/10![Frontier logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:38 pm
STL
- SFO
1 stop6h 49m
Frontier
Mon 7/138:23 pm
SFO
- STL
2 stops19h 42m
Frontier
Deal found 6/8![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:03 pm
STL
- SFO
1 stop17h 27m
Frontier
Tue 7/1410:23 pm
SFO
- STL
2 stops41h 52m
Frontier
Deal found 6/11![Frontier logo]()
$307
This Frontier deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Wed 7/86:00 am
SFO
- STL
1 stop11h 23m
Frontier
Deal found 6/8![Frontier logo]()
$312
This Booking.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:41 pm
STL
- SFO
1 stop9h 18m
Frontier
Wed 7/159:00 pm
SFO
- STL
1 stop19h 15m
Frontier
Deal found 6/8![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Tue 7/218:23 pm
SFO
- STL
2 stops19h 42m
Frontier
Deal found 6/10![Frontier logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:10 pm
STL
- SFO
1 stop22h 15m
Frontier
Thu 7/239:00 pm
SFO
- STL
1 stop19h 15m
Frontier
Deal found 6/9![Frontier logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 pm
STL
- SFO
1 stop15h 38m
Frontier
Tue 7/2810:23 pm
SFO
- STL
2 stops41h 52m
Frontier
Deal found 6/9![Frontier logo]()
$319
This Frontier deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:10 pm
STL
- SFO
1 stop17h 20m
Frontier
Tue 8/49:00 pm
SFO
- STL
1 stop19h 05m
Frontier
Deal found 6/9![Frontier logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 pm
STL
- SFO
1 stop15h 45m
Frontier
Fri 7/318:23 pm
SFO
- STL
2 stops19h 52m
Frontier
Deal found 6/10![Frontier logo]()
$317
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 June 12, 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 June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/117:03 pm
STL
- SFO
1 stop17h 22m
Frontier
Deal found 6/11![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:10 pm
STL
- SFO
1 stop15h 33m
Frontier
Deal found 6/9![Frontier logo]()
$116
This Super.com deal was found by Cheapflights users on 6/11. 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 7/218:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/11![Frontier logo]()
$120
This Priceline deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/11![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:03 pm
STL
- SFO
2 stops28h 35m
Frontier
Deal found 6/8![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:46 pm
STL
- SFO
2 stops27h 44m
Frontier
Deal found 6/8![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 6/11. 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 7/77:03 pm
STL
- SFO
1 stop17h 27m
Frontier
Deal found 6/11![Frontier logo]()
$126
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:46 pm
STL
- SFO
1 stop15h 05m
Frontier
Deal found 6/11![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:10 pm
STL
- SFO
2 stops27h 35m
Frontier
Deal found 6/10![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/32:56 pm
STL
- SFO
1 stop21h 58m
Frontier
Deal found 6/11![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 6/11. 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 7/118:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 6/11![Frontier logo]()
$132
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 June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $307 (Kiwi.com) |
One-way from | $99 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $474 |
Good round-trip deal | $556 or less |
Good one-way deal | $264 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 June 12, 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
Wed 7/8
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Mon 7/13
12:12 pm-6:17 pm
Nonstop4h 05m
$432
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Sun 10/18
2:00 pm-9:35 pm
2 stops9h 35m
San Francisco
Wed 10/28
7:40 am-8:00 pm
2 stops10h 20m
$452
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Sat 9/19
8:30 am-1:35 pm
2 stops7h 05m
San Francisco
Sat 10/3
5:00 am-4:35 pm
2 stops9h 35m
$458
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Mon 9/28
2:27 pm-11:36 pm
2 stops11h 09m
San Francisco
Wed 10/7
8:05 pm-8:48 am
2 stops10h 43m
$461
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 7/29
3:10 pm-10:15 pm
2 stops9h 05m
San Francisco
Fri 7/31
2:15 pm-11:55 pm
2 stops7h 40m
$462
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 8/26
8:42 am-11:04 am
Nonstop4h 22m
San Francisco
Sat 8/29
5:00 am-3:31 pm
1 stop8h 31m
$466
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 8/18
5:30 pm-12:30 am
1 stop9h 00m
San Francisco
Wed 8/19
12:40 pm-6:39 pm
Nonstop3h 59m
$470
Quickest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 8/11
8:25 am-10:35 am
Nonstop4h 10m
San Francisco
Wed 8/12
11:50 am-5:40 pm
Nonstop3h 50m
$503
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 7/14
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Mon 7/20
12:12 pm-6:17 pm
Nonstop4h 05m
$503
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Fri 7/31
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Mon 8/3
10:38 pm-8:39 am
1 stop8h 01m
$513
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 June.
| 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 Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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, August is the cheapest month in which you can book a flight from St. Louis to San Francisco (average of $371). 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 June 12, 2026.
It’s typically best to fly out from St. Louis to San Francisco at noon. Doing so could potentially save you 56% 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 June 12, 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.
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Comfort
8.0
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
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 Cruz
Santa Clara
Fairfield
Rancho Cordova
Roseville
Cupertino
Emeryville
Newark
San Bruno
Watsonville
San Ramon
Vacaville
San Carlos
Redwood City
Daly City
Sunnyvale
Turlock
Vallejo
San Lorenzo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from St. Louis
Popular flights
San Francisco flight routes
Alternative routes for St. Louis to San Francisco
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to San Francisco by cabin class
Find flights from St. Louis to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and San Francisco flights
Browse other St. Louis and San Francisco flight options. Last updated on June 12, 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 June 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
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 June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$140 | Average$270 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$180 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$368 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$320 | Average$507 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$332 | Average$506 | FlexibilityNo cancel fee | On-time63% |