$79+ Cheap flights from St. Louis (STL) to Fremont, CA
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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Apr 26 — May 31
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Fremont 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 Fremont are usually found in August or October, booked 47 days in advance, depart on a Thursday or Friday and return on a Thursday
Cheap flight deals from St. Louis to Fremont
Cheapest
Best
Last-minute
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Cheapest flights from St. Louis to FremontExplore the most affordable flight options available from St. Louis to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
Explore the most affordable flight options available from St. Louis to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Tue 6/97:12 pm
SFO
- STL
2 stops22h 11m
Frontier
Deal found 3/22![Frontier logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:18 pm
STL
- SFO
1 stop13h 12m
Frontier
Thu 5/2110:40 pm
SFO
- STL
2 stops32h 15m
Frontier
Deal found 3/22![Frontier logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:08 pm
STL
- SFO
1 stop13h 53m
Frontier
Mon 6/110:40 pm
SFO
- STL
2 stops18h 43m
Frontier
Deal found 3/23![Frontier logo]()
$314
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/258:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Sun 3/299:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Deal found 3/22![Frontier logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:51 pm
STL
- SFO
1 stop26h 58m
Frontier
Tue 5/267:15 pm
SFO
- STL
2 stops11h 40m
Frontier
Deal found 3/22![Frontier logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:18 pm
STL
- SFO
1 stop13h 12m
Frontier
Fri 5/225:25 pm
SFO
- STL
2 stops23h 58m
Frontier
Deal found 3/22![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Wed 6/1010:50 pm
SFO
- STL
2 stops13h 58m
Frontier
Deal found 3/22![Frontier logo]()
$323
This Expedia deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
STL
- SFO
1 stop9h 21m
Multiple Airlines
Sat 4/2510:38 pm
SFO
- STL
1 stop10h 11m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$324
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Fri 3/279:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Deal found 3/22![Frontier logo]()
$325
This CheapOair deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Wed 4/14:01 pm
SFO
- STL
1 stop27h 16m
Frontier
Deal found 3/23![Frontier logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Thu 6/117:12 pm
SFO
- STL
2 stops22h 24m
Frontier
Deal found 3/22![Frontier logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:51 pm
STL
- SFO
1 stop26h 58m
Frontier
Wed 5/278:44 pm
SFO
- STL
2 stops18h 49m
Frontier
Deal found 3/22![Frontier logo]()
$329
Best flights from St. Louis to FremontDiscover carefully curated flight deals from St. Louis to Fremont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
Discover carefully curated flight deals from St. Louis to Fremont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
This Southwest deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:30 am
STL
- SFO
2 stops9h 05m
Southwest
Tue 4/2811:25 am
SFO
- STL
2 stops8h 20m
Southwest
Deal found 3/22![Southwest logo]()
$345
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Sun 5/3112:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 3/24![United Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:46 pm
STL
- SFO
1 stop10h 40m
Delta
Sun 4/2610:55 pm
SFO
- STL
1 stop8h 47m
Delta
Deal found 3/27![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Tue 5/2612:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 3/24![United Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 3/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:59 pm
STL
- SFO
1 stop5h 58m
Delta
Mon 6/18:30 pm
SFO
- STL
2 stops10h 16m
Delta
Deal found 3/25![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:20 pm
STL
- SFO
2 stops11h 17m
Delta
Tue 4/2110:32 am
SFO
- STL
2 stops10h 41m
Delta
Deal found 3/22![Delta logo]()
$450
This Southwest deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:25 am
STL
- SFO
Nonstop4h 20m
Southwest
Sun 5/101:10 pm
SFO
- STL
Nonstop3h 55m
Southwest
Deal found 3/23![Southwest logo]()
$503
This Southwest deal was found by Cheapflights users on 3/25. 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 5/68:35 am
STL
- SFO
Nonstop4h 25m
Southwest
Sun 5/101:10 pm
SFO
- STL
Nonstop3h 55m
Southwest
Deal found 3/25![Southwest logo]()
$503
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Tue 6/1612:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 3/24![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:45 pm
STL
- SFO
1 stop8h 11m
United Airlines
Fri 5/2912:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 3/24![United Airlines logo]()
$512
This Southwest deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:00 pm
STL
- SFO
1 stop7h 00m
Southwest
Tue 4/2111:50 am
SFO
- STL
Nonstop3h 55m
Southwest
Deal found 3/22![Southwest logo]()
$513
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:10 am
STL
- SFO
1 stop8h 15m
United Airlines
Sat 6/1312:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 3/22![United Airlines logo]()
$513
Last-minute flights from St. Louis to FremontDiscover last-minute flight deals from St. Louis to Fremont. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Fremont. Data last updated March 27, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Fri 3/279:04 pm
SFO
- STL
1 stop10h 45m
Frontier
Deal found 3/22![Frontier logo]()
$325
This CheapOair deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Wed 4/14:01 pm
SFO
- STL
1 stop27h 16m
Frontier
Deal found 3/23![Frontier logo]()
$326
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:19 pm
STL
- SFO
1 stop25h 46m
Frontier
Wed 4/84:06 pm
SFO
- STL
1 stop18h 13m
Frontier
Deal found 3/25![Frontier logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:16 pm
STL
- SFO
1 stop6h 12m
Frontier
Sun 4/1210:57 pm
SFO
- STL
2 stops46h 22m
Frontier
Deal found 3/23![Frontier logo]()
$342
This Expedia deal was found by Cheapflights users on 3/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1012:22 pm
STL
- SFO
1 stop22h 52m
Frontier
Sun 4/129:00 pm
SFO
- STL
1 stop10h 48m
Frontier
Deal found 3/25![Frontier logo]()
$345
This Expedia deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:16 pm
STL
- SFO
1 stop6h 12m
Frontier
Fri 4/176:00 am
SFO
- STL
1 stop11h 21m
Frontier
Deal found 3/24![Frontier logo]()
$346
This CheapOair deal was found by Cheapflights users on 3/27. 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 4/168:06 pm
STL
- SFO
1 stop15h 07m
Frontier
Sun 4/1911:35 am
SFO
- STL
1 stop7h 25m
Frontier
Deal found 3/27![Frontier logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:17 pm
STL
- SFO
1 stop14h 56m
Frontier
Sun 4/1910:38 pm
SFO
- STL
2 stops18h 54m
Frontier
Deal found 3/23![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:55 pm
STL
- SFO
1 stop8h 15m
Southwest
Tue 4/2811:25 am
SFO
- STL
2 stops8h 20m
Southwest
Deal found 3/22![Southwest logo]()
$339
This Expedia deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
STL
- SFO
1 stop9h 21m
Multiple Airlines
Sat 4/2510:38 pm
SFO
- STL
1 stop10h 11m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$324
One-way flights from St. Louis to FremontSearch for one-way flight options from St. Louis to Fremont. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
Search for one-way flight options from St. Louis to Fremont. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This Super.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:06 pm
STL
- SFO
1 stop6h 21m
Frontier
Deal found 3/24![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:51 pm
STL
- SFO
1 stop17h 50m
Frontier
Deal found 3/24![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:08 pm
STL
- SFO
1 stop13h 53m
Frontier
Deal found 3/26![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 3/27. 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 5/73:33 pm
STL
- SFO
1 stop9h 31m
Frontier
Deal found 3/27![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 3/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:08 pm
STL
- SFO
1 stop6h 15m
Frontier
Deal found 3/26![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 3/27. 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.
Mon 4/279:55 pm
STL
- SFO
1 stop22h 50m
Frontier
Deal found 3/27![Frontier logo]()
$109
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:14 pm
STL
- SFO
1 stop20h 49m
Frontier
Deal found 3/25![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:08 pm
STL
- SFO
1 stop30h 15m
Frontier
Deal found 3/24![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/243:33 pm
STL
- SFO
1 stop9h 31m
Frontier
Deal found 3/26![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:58 pm
STL
- SFO
1 stop22h 47m
Frontier
Deal found 3/26![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/294:59 pm
STL
- SFO
2 stops26h 52m
Frontier
Deal found 3/27![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:16 pm
STL
- SFO
1 stop6h 07m
Frontier
Deal found 3/23![Frontier logo]()
$123
Find flight deals from St. Louis to Fremont
Keep the following information in mind while searching for St. Louis to Fremont flight deals. Data was last updated March 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Kiwi.com) |
One-way from | $79 (Super.com) |
Popular in | March |
Cheapest in | August |
Average price | $545 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Fremont that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
Use the filters below to find and compare flights from St. Louis to Fremont that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 4/21
5:30 am-12:35 pm
2 stops9h 05m
San Francisco
Tue 4/28
11:25 am-9:45 pm
2 stops8h 20m
$345
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 5/27
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Sun 5/31
12:12 pm-6:17 pm
Nonstop4h 05m
$408
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 4/22
1:46 pm-10:26 pm
1 stop10h 40m
San Francisco
Sun 4/26
10:55 pm-9:42 am
1 stop8h 47m
$428
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 5/21
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Tue 5/26
12:12 pm-6:17 pm
Nonstop4h 05m
$436
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 5/28
7:59 pm-11:57 pm
1 stop5h 58m
San Francisco
Mon 6/1
8:30 pm-8:46 am
2 stops10h 16m
$438
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 4/16
2:20 pm-11:37 pm
2 stops11h 17m
San Francisco
Tue 4/21
10:32 am-11:13 pm
2 stops10h 41m
$450
Quickest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Fri 5/8
8:25 am-10:45 am
Nonstop4h 20m
San Francisco
Sun 5/10
1:10 pm-7:05 pm
Nonstop3h 55m
$503
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 5/6
8:35 am-11:00 am
Nonstop4h 25m
San Francisco
Sun 5/10
1:10 pm-7:05 pm
Nonstop3h 55m
$503
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 6/10
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Tue 6/16
12:12 pm-6:17 pm
Nonstop4h 05m
$508
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Sat 5/23
4:45 pm-10:56 pm
1 stop8h 11m
San Francisco
Fri 5/29
12:12 pm-6:17 pm
Nonstop4h 05m
$512
Showing 1-10 of 24 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Fremont
Have a flexible travel schedule? Discover the best time to fly to Fremont 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 Fremont
STL-FR8
STL-SFO
How far ahead should I book a flight from St. Louis to Fremont?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Fremont. Price data was last updated on March 13, 2026.
The best time to book flights from St. Louis to Fremont is 47 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 Fremont?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Fremont (average of $121). Flying from St. Louis to Fremont in May is currently the most expensive (average of $256). 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 FR8?
Find hourly flight availability from St. Louis to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2026.
When flying from St. Louis to Fremont, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 49% versus a flight in the evening.
What is the cheapest day to fly from St. Louis to Fremont?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Fremont. Price data was last updated on August 31, 2025.
Travelers seeking maximum savings on their St. Louis to Fremont flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost to fly round-trip from St. Louis to Fremont?
Reviews of airlines servicing Fremont
Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated March 27, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from St. Louis to Fremont. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Fremont
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Complete your trip
Complete your trip to Fremont by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Fremont by cabin class
Find flights from St. Louis to Fremont, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Fremont flights
Browse other St. Louis and Fremont flight options. Last updated on March 27, 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 March 27, 2026.
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Check out other popular destinations found by fellow travelers in 2026
St. Louis to Fremont flights
Consider these flights traveling from St. Louis to Fremont.
Top 5 airlines flying from St. Louis to Fremont
Discover the top 5 airlines that operate flights from St. Louis to Fremont. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$122 | Average$241 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$180 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$352 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$259 | Average$447 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$290 | Average$403 | FlexibilityNo cancel fee | On-time69% |