Fremont

$102+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Jul 5 — Jul 121
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Cheapflights Tip: The best prices from Lambert-St Louis to Fremont are usually found in October or August, booked 75 days in advance, depart on a Friday or Thursday and return on a Thursday

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 June 5, 2026.

This Frontier deal was found by Cheapflights users on 6/1. 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 7/18:08 pm
STL
-
SFO
1 stop6h 19m
Frontier
Tue 7/76:00 am
SFO
-
STL
1 stop11h 23m
Frontier
Deal found 6/1$310
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Wed 7/87:03 pm
STL
-
SFO
1 stop15h 45m
Frontier
Wed 7/154:30 pm
SFO
-
STL
2 stops23h 07m
Frontier
Deal found 6/4$314
This Frontier deal was found by Cheapflights users on 6/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:38 pm
STL
-
SFO
1 stop6h 49m
Frontier
Tue 6/2310:10 pm
SFO
-
STL
1 stop8h 42m
Frontier
Deal found 6/2$316
This CheapOair deal was found by Cheapflights users on 6/2. 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 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 8/163:43 pm
SFO
-
STL
1 stop24h 32m
Frontier
Deal found 6/2$317
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
Sun 7/263:41 pm
STL
-
SFO
1 stop9h 18m
Frontier
Tue 7/2811:15 am
SFO
-
STL
2 stops30h 08m
Frontier
Deal found 6/3$318
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 6/297:38 pm
STL
-
SFO
1 stop6h 49m
Frontier
Tue 7/79:00 pm
SFO
-
STL
2 stops20h 23m
Frontier
Deal found 6/3$319
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 7/207:10 pm
STL
-
SFO
1 stop26h 42m
Frontier
Mon 7/279:00 pm
SFO
-
STL
1 stop19h 05m
Frontier
Deal found 6/5$320
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Thu 7/308:08 pm
STL
-
SFO
1 stop6h 15m
Frontier
Tue 8/49:00 pm
SFO
-
STL
1 stop19h 05m
Frontier
Deal found 6/4$322
This CheapOair deal was found by Cheapflights users on 6/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:35 am
STL
-
SFO
1 stop9h 45m
Frontier
Tue 9/296:30 am
SFO
-
STL
1 stop27h 21m
Frontier
Deal found 6/2$323
This CheapOair deal was found by Cheapflights users on 6/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:10 pm
STL
-
SFO
1 stop17h 15m
Frontier
Sat 8/156:00 am
SFO
-
STL
1 stop11h 23m
Frontier
Deal found 6/4$324

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 June 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$310
(Frontier)

One-way from

$102
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$463
Provider with most accurate pricing for Lambert-St Louis-San Francisco flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-San Francisco flights.
From Lambert-St Louis to Fremont
One-way flight from Lambert-St Louis to Fremont
Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in June 2026

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 June 5, 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

Price

Cheapest round-trip

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 9/19

4:20 pm-8:35 pm

1 stop6h 15m

San Francisco

Sat 10/3

11:50 am-10:45 pm

2 stops8h 55m

$408

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 9/14

6:08 pm-11:28 pm

1 stop7h 20m

San Francisco

Thu 9/17

9:27 am-11:43 pm

2 stops12h 16m

$460

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 9/26

7:00 am-9:22 am

Nonstop4h 22m

San Francisco

Tue 10/6

12:40 pm-6:38 pm

Nonstop3h 58m

$472

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 8/28

2:32 pm-11:44 pm

2 stops11h 12m

San Francisco

Wed 9/2

11:35 am-8:42 pm

1 stop7h 07m

$480

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 8/28

10:16 am-5:22 pm

2 stops9h 06m

San Francisco

Wed 9/2

10:32 am-11:42 pm

2 stops11h 10m

$503
Quickest round-trip

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 8/10

8:25 am-10:35 am

Nonstop4h 10m

San Francisco

Tue 8/18

11:50 am-5:40 pm

Nonstop3h 50m

$503

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 6/27

5:10 am-9:18 am

1 stop6h 08m

San Francisco

Sun 7/5

12:12 pm-6:17 pm

Nonstop4h 05m

$526

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 9/11

8:25 am-10:35 am

Nonstop4h 10m

San Francisco

Sun 9/20

11:40 pm-10:30 am

1 stop8h 50m

$526

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 8/28

8:42 am-11:04 am

Nonstop4h 22m

San Francisco

Wed 9/2

12:40 pm-6:39 pm

Nonstop3h 59m

$532
Cheapest one-way

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 8/12

8:42 am-11:04 am

Nonstop4h 22m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 20 resultsSorted by cheapest first
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

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 June 5, 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.

Weekly flight availability from St. Louis to Fremont

Explore weekly flight availability from St. Louis to Fremont. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 5, 2026.

The most flights from STL to FR8 are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from St. Louis to Fremont?

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 June 5, 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

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

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 3 flights from Lambert-St Louis to Fremont per day from 5 different airlines.

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

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

    A quick flight from St. Louis to Fremont can take about 4h 22m. Southwest provides one of the quickest options available for as low as $472. 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 $79. Users have also found prices from $128 and $138 on Delta and American Airlines, respectively.

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

    Consider Southwest (65%), Air New Zealand (39%) or SkyWest Airlines (38%) 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 $982, our data indicates the cheapest price to be $200. The most popular route (Lambert-St Louis - San Francisco), is priced around $303.

  • 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.

See more FAQs

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Alternative routes for St. Louis to Fremont

See prices for flight routes from nearby airports that may be better suited for you.

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 June 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$267FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$180Average$449FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$419FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$286Average$477FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$320Average$506FlexibilityNo cancel feeOn-time69%

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