$68+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Apr 7 — Apr 141
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 44 days in advance, depart on a Thursday or Friday and return on a Tuesday
Cheap flight deals from St. Louis to Fremont
Cheapest
Best
Last-minute
One-way
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 8, 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 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/168:06 pm
STL
- SFO
1 stop30h 21m
Frontier
Fri 4/2411:56 am
SFO
- STL
1 stop29h 36m
Frontier
Deal found 3/5![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:14 pm
STL
- SFO
1 stop8h 23m
Frontier
Wed 4/810:14 pm
SFO
- STL
2 stops33h 34m
Frontier
Deal found 3/6![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 3/6. 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
Tue 4/146:00 am
SFO
- STL
2 stops22h 50m
Frontier
Deal found 3/6![Frontier logo]()
$229
This Frontier deal was found by Cheapflights users on 3/6. 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 3/2312:16 pm
STL
- SFO
1 stop8h 58m
Frontier
Tue 3/319:04 pm
SFO
- STL
1 stop10h 44m
Frontier
Deal found 3/6![Frontier logo]()
$230
This Orbitz deal was found by Cheapflights users on 3/6. 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.
Thu 5/148:12 pm
STL
- SFO
1 stop14h 56m
Frontier
Mon 5/186:00 am
SFO
- STL
1 stop11h 12m
Frontier
Deal found 3/6![Frontier logo]()
$232
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Mon 4/610:03 pm
SFO
- STL
1 stop10h 27m
Frontier
Deal found 3/6![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/248:06 pm
STL
- SFO
1 stop6h 21m
Frontier
Tue 4/288:40 am
SFO
- STL
2 stops36h 39m
Frontier
Deal found 3/4![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- SFO
1 stop11h 46m
Frontier
Tue 4/79:00 pm
SFO
- STL
1 stop10h 48m
Frontier
Deal found 3/3![Frontier logo]()
$235
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Mon 3/3010:48 pm
SFO
- STL
1 stop10h 31m
Frontier
Deal found 3/3![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- SFO
1 stop9h 47m
Frontier
Tue 3/317:32 pm
SFO
- STL
2 stops12h 16m
Frontier
Deal found 3/4![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:55 pm
STL
- SFO
1 stop12h 03m
Frontier
Mon 4/276:00 am
SFO
- STL
1 stop11h 32m
Frontier
Deal found 3/4![Frontier logo]()
$240
This Booking.com deal was found by Cheapflights users on 3/5. 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 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Wed 4/110:14 pm
SFO
- STL
1 stop21h 03m
Frontier
Deal found 3/5![Frontier logo]()
$241
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 8, 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 8, 2026.
This Delta deal was found by Cheapflights users on 3/2. 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
Mon 4/2010:32 am
SFO
- STL
2 stops11h 53m
Delta
Deal found 3/2![Delta logo]()
$325
This United Airlines deal was found by Cheapflights users on 3/2. 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 4/168:30 am
STL
- SFO
Nonstop4h 43m
United Airlines
Mon 4/2011:20 pm
SFO
- STL
Nonstop4h 30m
United Airlines
Deal found 3/2![United Airlines logo]()
$390
This Southwest deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:50 pm
STL
- SFO
2 stops10h 20m
Southwest
Tue 4/218:55 am
SFO
- STL
2 stops11h 05m
Southwest
Deal found 3/4![Southwest logo]()
$412
This Delta deal was found by Cheapflights users on 3/6. 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
Sun 4/195:40 am
SFO
- STL
1 stop5h 43m
Delta
Deal found 3/6![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:15 am
STL
- SFO
2 stops9h 15m
Southwest
Tue 4/148:55 am
SFO
- STL
2 stops8h 20m
Southwest
Deal found 3/6![Southwest logo]()
$413
This United Airlines deal was found by Cheapflights users on 3/6. 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 6/47:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
Sun 6/75:05 am
SFO
- STL
1 stop8h 41m
United Airlines
Deal found 3/6![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:30 am
STL
- SFO
Nonstop4h 41m
United Airlines
Fri 5/811:20 pm
SFO
- STL
Nonstop4h 27m
United Airlines
Deal found 3/6![United Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/238:30 am
STL
- SFO
Nonstop4h 43m
United Airlines
Mon 4/2711:20 pm
SFO
- STL
Nonstop4h 30m
United Airlines
Deal found 3/5![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 3/6. 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 5/610:25 am
STL
- SFO
1 stop10h 13m
United Airlines
Mon 5/1111:20 pm
SFO
- STL
Nonstop4h 27m
United Airlines
Deal found 3/6![United Airlines logo]()
$459
Last-minute flights from St. Louis to FremontDiscover last-minute flight deals from St. Louis to Fremont. Data last updated March 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Fremont. Data last updated March 8, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/6. 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 3/2312:16 pm
STL
- SFO
1 stop8h 58m
Frontier
Tue 3/319:04 pm
SFO
- STL
1 stop10h 44m
Frontier
Deal found 3/6![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- SFO
1 stop9h 47m
Frontier
Tue 3/317:32 pm
SFO
- STL
2 stops12h 16m
Frontier
Deal found 3/4![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Mon 3/3010:48 pm
SFO
- STL
1 stop10h 31m
Frontier
Deal found 3/3![Frontier logo]()
$238
This Booking.com deal was found by Cheapflights users on 3/5. 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 3/2611:21 am
STL
- SFO
1 stop9h 53m
Frontier
Wed 4/110:14 pm
SFO
- STL
1 stop21h 03m
Frontier
Deal found 3/5![Frontier logo]()
$241
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:12 pm
STL
- SFO
1 stop6h 16m
Frontier
Mon 4/610:03 pm
SFO
- STL
1 stop10h 27m
Frontier
Deal found 3/6![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:14 pm
STL
- SFO
1 stop8h 23m
Frontier
Wed 4/810:14 pm
SFO
- STL
2 stops33h 34m
Frontier
Deal found 3/6![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- SFO
1 stop11h 46m
Frontier
Tue 4/79:00 pm
SFO
- STL
1 stop10h 48m
Frontier
Deal found 3/3![Frontier logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 3/6. 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
Tue 4/146:00 am
SFO
- STL
2 stops22h 50m
Frontier
Deal found 3/6![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/168:06 pm
STL
- SFO
1 stop30h 21m
Frontier
Fri 4/2411:56 am
SFO
- STL
1 stop29h 36m
Frontier
Deal found 3/5![Frontier logo]()
$226
This Super.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:17 pm
STL
- SFO
1 stop14h 56m
Frontier
Sat 4/256:00 am
SFO
- STL
1 stop11h 32m
Frontier
Deal found 3/4![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:55 pm
STL
- SFO
1 stop12h 03m
Frontier
Mon 4/276:00 am
SFO
- STL
1 stop11h 32m
Frontier
Deal found 3/4![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/248:06 pm
STL
- SFO
1 stop6h 21m
Frontier
Tue 4/288:40 am
SFO
- STL
2 stops36h 39m
Frontier
Deal found 3/4![Frontier logo]()
$234
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 8, 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 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/138:19 pm
STL
- SFO
1 stop29h 06m
Frontier
Deal found 3/3![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/278:17 pm
STL
- SFO
1 stop29h 08m
Frontier
Deal found 3/5![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/248:06 pm
STL
- SFO
1 stop29h 19m
Frontier
Deal found 3/3![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 5/98:12 pm
STL
- SFO
1 stop14h 56m
Frontier
Deal found 3/3![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 3/308:12 pm
STL
- SFO
1 stop30h 16m
Frontier
Deal found 3/3![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/178:06 pm
STL
- SFO
1 stop6h 21m
Frontier
Deal found 3/3![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 3/3. 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 3/2411:27 am
STL
- SFO
1 stop9h 47m
Frontier
Deal found 3/3![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:14 pm
STL
- SFO
1 stop8h 23m
Frontier
Deal found 3/7![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 3/5. 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 5/49:55 pm
STL
- SFO
1 stop18h 31m
Frontier
Deal found 3/5![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/258:17 pm
STL
- SFO
1 stop14h 56m
Frontier
Deal found 3/4![Frontier logo]()
$100
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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $226 (Kiwi.com) |
One-way from | $68 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $543 |
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 8, 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
Thu 4/16
2:20 pm-11:37 pm
2 stops11h 17m
San Francisco
Mon 4/20
10:32 am-12:25 am
2 stops11h 53m
$325
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 4/16
8:30 am-11:13 am
Nonstop4h 43m
San Francisco
Mon 4/20
11:20 pm-5:50 am
Nonstop4h 30m
$390
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 4/16
2:20 pm-11:37 pm
2 stops11h 17m
San Francisco
Sun 4/19
5:40 am-1:23 pm
1 stop5h 43m
$404
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Fri 4/17
3:50 pm-12:10 am
2 stops10h 20m
San Francisco
Tue 4/21
8:55 am-10:00 pm
2 stops11h 05m
$412
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 4/8
10:15 am-5:30 pm
2 stops9h 15m
San Francisco
Tue 4/14
8:55 am-7:15 pm
2 stops8h 20m
$413
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 6/4
7:23 pm-9:43 pm
Nonstop4h 20m
San Francisco
Sun 6/7
5:05 am-3:46 pm
1 stop8h 41m
$427
Quickest round-trip
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Mon 5/4
8:30 am-11:11 am
Nonstop4h 41m
San Francisco
Fri 5/8
11:20 pm-5:47 am
Nonstop4h 27m
$442
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Thu 4/23
8:30 am-11:13 am
Nonstop4h 43m
San Francisco
Mon 4/27
11:20 pm-5:50 am
Nonstop4h 30m
$449
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Wed 5/6
10:25 am-6:38 pm
1 stop10h 13m
San Francisco
Mon 5/11
11:20 pm-5:47 am
Nonstop4h 27m
$459
Cheapest one-way
St. LouisSan Francisco
STL - SFO
STLSFO
Lambert-St Louis
Tue 4/14
2:20 pm-11:37 pm
2 stops11h 17m
$153
Showing 1-10 of 21 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 6, 2026.
The best time to book flights from St. Louis to Fremont is 44 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 8, 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 48% 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. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 8, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
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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St. Louis and Fremont flights
Browse other St. Louis and Fremont flight options. Last updated on March 8, 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 8, 2026.
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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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$121 | Average$235 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$361 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$180 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$259 | Average$441 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$287 | Average$411 | FlexibilityNo cancel fee | On-time69% |