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Fremont

$88+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Fremont are usually found in February or April, booked 76 days in advance, depart on a Thursday or Saturday and return on a Tuesday

Cheap flight deals from St. Louis to Fremont

Cheapest flights from St. Louis to Fremont
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 December 12, 2025.

This Frontier deal was found by Cheapflights users on 12/11. 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 12/2010:10 pmSTL - SFO
1 stop11h 38mFrontier
Thu 1/810:18 pmSFO - STL
1 stop11h 54mFrontier
Deal found 12/11$207
This Frontier deal was found by Cheapflights users on 12/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:10 pmSTL - SFO
1 stop11h 38mFrontier
Wed 12/3111:20 pmSFO - STL
1 stop8h 20mFrontier
Deal found 12/10$252
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:10 pmSTL - SFO
1 stop11h 38mFrontier
Sun 1/46:24 amSFO - STL
1 stop25h 38mFrontier
Deal found 12/11$262
This Frontier deal was found by Cheapflights users on 12/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:10 pmSTL - SFO
1 stop11h 38mFrontier
Thu 1/16:00 amSFO - STL
1 stop8h 24mFrontier
Deal found 12/10$278
This Travelocity deal was found by Cheapflights users on 12/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:10 pmSTL - SFO
1 stop25h 26mFrontier
Thu 1/16:00 amSFO - STL
1 stop8h 24mFrontier
Deal found 12/11$284
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:43 pmSTL - SFO
1 stop14h 10mFrontier
Tue 12/166:30 amSFO - STL
1 stop25h 44mFrontier
Deal found 12/10$285
This Booking.com deal was found by Cheapflights users on 12/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:43 pmSTL - SFO
1 stop6h 41mFrontier
Wed 12/3111:20 pmSFO - STL
1 stop8h 20mFrontier
Deal found 12/11$298
This Priceline deal was found by Cheapflights users on 12/11. 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.
Fri 12/121:16 pmSTL - SFO
1 stop10h 09mFrontier
Sat 1/177:00 amSFO - STL
1 stop5h 48mFrontier
Deal found 12/11$301
This Frontier deal was found by Cheapflights users on 12/11. 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 12/2010:10 pmSTL - SFO
1 stop11h 38mFrontier
Sat 12/2711:25 pmSFO - STL
1 stop8h 15mFrontier
Deal found 12/11$307
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:10 pmSTL - SFO
1 stop25h 26mFrontier
Sun 12/286:24 amSFO - STL
1 stop25h 38mFrontier
Deal found 12/10$309
This Trip.com deal was found by Cheapflights users on 12/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:10 pmSTL - SFO
1 stop11h 38mFrontier
Thu 12/256:00 amSFO - STL
1 stop8h 24mFrontier
Deal found 12/11$310

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 December 12, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$156
(Kiwi.com)

One-way from

$88
(Trip.com)

Popular in

March

Cheapest in

February

Average price

$441
Provider with most accurate pricing for Lambert-St Louis-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-San Francisco flights.
Search Deals
From Lambert-St Louis to Fremont
Search Deals
One-way flight from Lambert-St Louis to Fremont
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 2025.
Use the filters below to find and compare flights from St. Louis to Fremont that are best for you.

Fly from

St. Louis

Fly to

Fremont

Route

Depart

Return

Price

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/19

6:10 am-3:56 pm

2 stops11h 46m

San Francisco

Mon 2/23

10:20 am-12:25 am

2 stops12h 05m

$254

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 1/14

6:35 am-5:49 pm

2 stops13h 14m

San Francisco

Wed 1/21

10:30 am-9:38 pm

2 stops9h 08m

$254

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/19

10:11 pm-7:48 am

1 stop11h 37m

San Francisco

Sun 2/22

6:15 am-1:09 pm

1 stop28h 54m

$260

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/19

10:11 pm-7:48 am

1 stop11h 37m

San Francisco

Mon 2/23

8:16 pm-6:51 am

2 stops32h 35m

$270

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/26

2:47 pm-11:59 pm

1 stop11h 12m

San Francisco

Mon 3/2

8:47 pm-1:51 pm

1 stop15h 04m

$312

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 2/18

10:12 am-6:36 pm

1 stop10h 24m

San Francisco

Sat 2/21

10:25 am-9:38 pm

2 stops9h 13m

$332

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 2/18

7:00 am-9:55 pm

1 stop16h 55m

San Francisco

Sat 2/21

8:47 pm-2:23 pm

1 stop15h 36m

$341

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/12

2:47 pm-10:56 pm

1 stop10h 09m

San Francisco

Tue 2/17

11:34 am-1:51 pm

1 stop24h 17m

$341

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 2/26

2:22 pm-10:41 pm

2 stops10h 19m

San Francisco

Mon 3/2

10:54 pm-9:32 am

1 stop8h 38m

$347

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 1/31

3:31 pm-11:30 pm

2 stops9h 59m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 20 results
1
2

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.
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

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 December 5, 2025.

The best time to book flights from St. Louis to Fremont is 76 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 $123). 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 December 12, 2025.

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 afternoon, which can drop the price by up to 25% 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 December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Fremont flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday 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 December 12, 2025.
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.
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,084 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • What airport do you fly from for flights from St. Louis to Fremont?

    If you book a flight to Fremont from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 2 flights from Lambert-St Louis to Fremont per day from 5 different airlines.

  • How popular is this St. Louis to Fremont flight route?

    Flights from Lambert-St Louis to Fremont have been viewed 17 times in the past calendar month.

  • How long is the flight from St. Louis to Fremont?

    A quick flight from St. Louis to Fremont can take about 11h 37m. Delta provides one of the quickest options available for as low as $260. The distance from St. Louis to Fremont is about 1730 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from St. Louis to Fremont one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $72. Users have also found prices from $113 and $123 on United Airlines and American Airlines, respectively.

  • What are the most reliable airlines from St. Louis to Fremont?

    Consider SkyWest Airlines (75%), United Airlines (75%) or Air New Zealand (75%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Fremont.

  • What are the cheapest flights from St. Louis to Fremont?

    Looking for the cheapest flight from St. Louis to Fremont? While on average our users pay $638, our data indicates the cheapest price to be $203. The most popular route (Lambert-St Louis - San Francisco), is priced around $223.

  • Can I find deals for flights from St. Louis to Fremont that include hotel bookings?

    Yes. In addition to deals on St. Louis to Fremont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Fremont.

  • Can I find deals for business class flights from St. Louis to Fremont?

    Yes. Cheapflights offers flight deals from St. Louis to Fremont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $123). 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.

See more FAQs

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Alternative routes for St. Louis to Fremont

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$234FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$182Average$337FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$363FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$422FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$264Average$400FlexibilityNo cancel feeOn-time69%

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