How popular is this St. Louis to San Francisco Bay Area flight route?

Within the past month, 15 users have taken a look at flights from Lambert-St Louis to San Francisco Bay Area.

How long is the flight from St. Louis to San Francisco Bay Area?

Departing from St. Louis to San Francisco Bay Area will take you 4h 38m. Airlines will cover a distance of 1730 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from St. Louis to San Francisco Bay Area one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $84. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from St. Louis to San Francisco Bay Area for a low price.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular routes from St. Louis to San Francisco Bay Area?

Most travelers choose Lambert-St Louis - San Francisco, Lambert-St Louis - San Jose or Lambert-St Louis - Oakland when deciding on the best route from St. Louis to San Francisco Bay Area.

What are the cheapest flights from St. Louis to San Francisco Bay Area?

Looking at all options, your cheapest flight can be booked for $97. While the most popular route (Lambert-St Louis - San Francisco) can be booked for $250 on average, our data indicates $1,180 when flying from St. Louis to San Francisco Bay Area.

What are the most reliable airlines from St. Louis to San Francisco Bay Area?

Before booking your flight to San Francisco Bay Area from St. Louis, check out the most reliable airlines to get you to your destination on time: Asiana Airlines (80%), Air New Zealand (71%), Southwest( 65%).

What are the most popular airlines that fly from St. Louis to San Francisco Bay Area?

The most popular airlines flying from St. Louis to San Francisco Bay Area are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

What airport do you fly from for flights from St. Louis to San Francisco Bay Area?

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to San Francisco Bay Area. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

How can I find direct flights from St. Louis to San Francisco Bay Area?

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

Can I find deals for business class flights from St. Louis to San Francisco Bay Area?

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

$78+ Flights from St. Louis to San Francisco Bay Area

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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

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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.

Cheap flight deals from St. Louis to San Francisco Bay Area

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$170 (Frontier)
One-way from	$78 (Cheapflightsfares)
Popular in	July
Cheapest in	January
Average price	$396

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 San Francisco Bay Area

Search Deals

One-way flight from Lambert-St Louis to San Francisco Bay Area

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($33 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from St. Louis to San Francisco Bay Area

Cheapest flights from St. Louis to San Francisco Bay Area
Explore the most affordable flight options available from St. Louis to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Fri 10/177:52 pmSTL - SFO

1 stop28h 37mFrontier

Sun 10/192:47 pmSFO - STL

1 stop28h 17mFrontier

Deal found 9/29

$170

Thu 10/1611:32 amSTL - SFO

1 stop11h 51mFrontier

Sun 10/192:47 pmSFO - STL

1 stop28h 17mFrontier

Deal found 9/28

$172

Tue 10/147:52 pmSTL - SFO

1 stop28h 35mFrontier

Sat 10/186:44 amSFO - STL

1 stop24h 23mFrontier

Deal found 9/29

$186

Fri 11/77:45 pmSTL - SFO

1 stop6h 29mFrontier

Sun 11/96:33 pmSFO - STL

2 stops12h 34mFrontier

Deal found 9/29

$189

Thu 10/302:42 pmSTL - SFO

1 stop8h 40mFrontier

Mon 11/310:07 pmSFO - STL

2 stops9h 00mFrontier

Deal found 9/27

$193

Fri 10/37:55 pmSTL - SFO

1 stop28h 35mFrontier

Tue 10/76:34 amSFO - STL

1 stop24h 33mFrontier

Deal found 9/26

$194

Sat 10/254:51 pmSTL - SFO

1 stop6h 38mFrontier

Sun 11/25:45 amSFO - STL

1 stop6h 12mFrontier

Deal found 9/27

$206

Fri 10/311:09 pmSTL - SFO

1 stop30h 34mFrontier

Mon 11/34:14 pmSFO - STL

2 stops14h 53mFrontier

Deal found 9/27

$211

Thu 10/2310:17 amSTL - SFO

1 stop7h 43mFrontier

Sat 10/253:50 pmSFO - STL

2 stops15h 32mFrontier

Deal found 9/28

$212

Sat 10/254:51 pmSTL - SFO

1 stop6h 38mFrontier

Sun 10/268:21 pmSFO - STL

1 stop10h 46mFrontier

Deal found 9/27

$220

Thu 11/66:22 pmSTL - SFO

2 stops16h 22mFrontier

Sun 11/96:33 pmSFO - STL

2 stops12h 34mFrontier

Deal found 9/27

$221

Sat 10/47:55 pmSTL - SFO

1 stop14h 20mFrontier

Mon 10/136:34 amSFO - STL

1 stop24h 33mFrontier

Deal found 9/27

$222

Best flights from St. Louis to San Francisco Bay Area
Discover carefully curated flight deals from St. Louis to San Francisco Bay Area that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2025.

Wed 11/121:55 pmSTL - SJC

1 stop8h 43mDelta

Sat 11/1511:40 amSJC - STL

2 stops11h 06mDelta

Deal found 9/27

$316

Tue 3/32:55 pmSTL - STS

1 stop9h 03mAlaska Airlines

Wed 3/42:45 pmSTS - STL

1 stop7h 11mAlaska Airlines

Deal found 9/26

$318

Tue 12/165:30 pmSTL - SFO

Nonstop4h 38mUnited Airlines

Thu 12/256:00 amSFO - STL

1 stop9h 54mUnited Airlines

Deal found 9/28

$319

Fri 2/207:20 amSTL - OAK

1 stop8h 15mSouthwest

Tue 2/2411:10 amOAK - STL

1 stop7h 50mSouthwest

Deal found 9/28

$333

Sat 10/44:58 pmSTL - SJC

2 stops20h 28mFrontier

Mon 10/136:43 pmSJC - STL

2 stops12h 24mFrontier

Deal found 9/27

$375

Tue 11/255:17 amSTL - SJC

1 stop6h 59mAmerican Airlines

Fri 11/286:00 amSJC - STL

1 stop5h 40mAmerican Airlines

Deal found 9/29

$387

Tue 10/287:00 amSTL - SFO

1 stop8h 50mAlaska Airlines

Tue 11/44:39 pmSFO - STL

1 stop20h 39mAlaska Airlines

Deal found 9/29

$318

Tue 10/286:00 amSTL - SFO

1 stop9h 30mDelta

Mon 11/312:35 amSFO - STL

1 stop6h 16mDelta

Deal found 9/29

$321

Thu 11/276:30 amSTL - SFO

1 stop7h 26mUnited Airlines

Tue 12/26:00 amSFO - STL

1 stop6h 25mUnited Airlines

Deal found 9/27

$329

Mon 11/2411:50 amSTL - SFO

Nonstop4h 30mSouthwest

Sun 12/712:50 pmSFO - STL

Nonstop3h 40mSouthwest

Deal found 9/27

$357

Tue 12/166:00 amSTL - SFO

1 stop9h 33mDelta

Thu 12/251:19 pmSFO - STL

1 stop6h 15mDelta

Deal found 9/28

$329

Sat 10/255:35 pmSTL - SFO

Nonstop4h 35mUnited Airlines

Sat 11/110:35 amSFO - STL

Nonstop3h 52mUnited Airlines

Deal found 9/26

$337

Fri 10/317:00 amSTL - SJC

1 stop8h 45mAlaska Airlines

Mon 11/32:39 pmSJC - STL

1 stop7h 20mAlaska Airlines

Deal found 9/27

$343

Sat 10/256:20 amSTL - SJC

2 stops8h 05mSouthwest

Wed 10/291:30 pmSJC - STL

2 stops7h 40mSouthwest

Deal found 9/28

$358

Wed 12/177:00 amSTL - SJC

1 stop10h 54mAlaska Airlines

Wed 12/316:15 amSJC - STL

1 stop8h 11mAlaska Airlines

Deal found 9/28

$344

Wed 11/126:15 amSTL - SJC

1 stop8h 03mUnited Airlines

Sat 11/1512:30 pmSJC - STL

1 stop7h 24mUnited Airlines

Deal found 9/27

$348

Sat 11/112:14 pmSTL - SJC

2 stops11h 54mDelta

Sun 11/910:25 pmSJC - STL

1 stop8h 03mDelta

Deal found 9/26

$355

Fri 12/511:25 amSTL - SFO

Nonstop4h 30mSouthwest

Mon 12/1510:50 amSFO - STL

Nonstop3h 45mSouthwest

Deal found 9/26

$368

Tue 11/117:00 amSTL - OAK

1 stop8h 55mAlaska Airlines

Sun 11/166:30 amOAK - STL

1 stop15h 29mAlaska Airlines

Deal found 9/28

$345

Sun 12/75:30 pmSTL - SFO

Nonstop4h 38mUnited Airlines

Wed 12/1010:35 amSFO - STL

Nonstop3h 52mUnited Airlines

Deal found 9/26

$349

Tue 11/116:34 amSTL - SJC

2 stops11h 21mDelta

Sun 11/161:15 pmSJC - STL

1 stop8h 08mDelta

Deal found 9/28

$355

Mon 11/244:50 pmSTL - SFO

1 stop7h 20mSouthwest

Mon 12/14:40 pmSFO - STL

1 stop5h 50mSouthwest

Deal found 9/27

$374

Mon 10/207:30 pmSTL - OAK

1 stop6h 23mDelta

Sat 10/2512:30 pmOAK - STL

1 stop6h 53mDelta

Deal found 9/28

$358

Wed 1/72:55 pmSTL - OAK

1 stop10h 43mAlaska Airlines

Sun 1/1110:10 amOAK - STL

1 stop25h 42mAlaska Airlines

Deal found 9/26

$365

Sat 12/205:00 pmSTL - OAK

1 stop7h 50mSouthwest

Sat 1/36:20 amOAK - STL

1 stop7h 00mSouthwest

Deal found 9/28

$397

Fri 2/207:00 amSTL - OAK

2 stops27h 43mAlaska Airlines

Tue 2/248:00 amOAK - STL

2 stops13h 56mAlaska Airlines

Deal found 9/28

$365

Thu 11/276:00 amSTL - SFO

1 stop9h 35mDelta

Wed 12/38:25 amSFO - STL

2 stops13h 04mDelta

Deal found 9/28

$366

Tue 11/117:00 amSTL - SJC

1 stop8h 45mAlaska Airlines

Sun 11/168:10 amSJC - STL

1 stop13h 49mAlaska Airlines

Deal found 9/28

$377

Sat 10/256:50 amSTL - OAK

1 stop7h 00mDelta

Sun 11/24:51 pmOAK - STL

1 stop5h 33mDelta

Deal found 9/27

$387

Mon 11/37:00 amSTL - OAK

1 stop29h 25mAlaska Airlines

Sun 11/96:30 amOAK - STL

1 stop15h 29mAlaska Airlines

Deal found 9/27

$392

Last-minute flights from St. Louis to San Francisco Bay Area
Discover last-minute flight deals from St. Louis to San Francisco Bay Area. Data last updated September 29, 2025 and is based on user searches.

Fri 10/37:55 pmSTL - SFO

1 stop28h 35mFrontier

Tue 10/76:34 amSFO - STL

1 stop24h 33mFrontier

Deal found 9/26

$194

Sat 10/47:55 pmSTL - SFO

1 stop14h 20mFrontier

Mon 10/136:34 amSFO - STL

1 stop24h 33mFrontier

Deal found 9/27

$221

Sat 10/47:55 pmSTL - SJC

1 stop17h 31mFrontier

Mon 10/1312:35 pmSJC - STL

1 stop18h 32mFrontier

Deal found 9/27

$225

Tue 10/147:52 pmSTL - SFO

1 stop28h 35mFrontier

Sat 10/186:44 amSFO - STL

1 stop24h 23mFrontier

Deal found 9/29

$186

Thu 10/1611:32 amSTL - SFO

1 stop11h 51mFrontier

Sun 10/192:47 pmSFO - STL

1 stop28h 17mFrontier

Deal found 9/28

$172

Fri 10/177:52 pmSTL - SFO

1 stop28h 37mFrontier

Sun 10/192:47 pmSFO - STL

1 stop28h 17mFrontier

Deal found 9/29

$170

Thu 10/2310:17 amSTL - SFO

1 stop7h 43mFrontier

Sat 10/253:50 pmSFO - STL

2 stops15h 32mFrontier

Deal found 9/28

$212

Sat 10/254:51 pmSTL - SFO

1 stop6h 38mFrontier

Sun 11/25:45 amSFO - STL

1 stop6h 12mFrontier

Deal found 9/27

$206

Sat 10/254:51 pmSTL - SFO

1 stop6h 38mFrontier

Sun 10/268:21 pmSFO - STL

1 stop10h 46mFrontier

Deal found 9/27

$220

Thu 10/302:42 pmSTL - SFO

1 stop8h 40mFrontier

Mon 11/310:07 pmSFO - STL

2 stops9h 00mFrontier

Deal found 9/27

$193

Thu 10/308:40 pmSTL - SFO

2 stops22h 15mFrontier

Sun 11/28:09 pmSFO - STL

1 stop10h 58mFrontier

Deal found 9/27

$226

Fri 10/311:09 pmSTL - SFO

1 stop30h 34mFrontier

Mon 11/34:14 pmSFO - STL

2 stops14h 53mFrontier

Deal found 9/27

$211

One-way flights from St. Louis to San Francisco Bay Area
Search for one-way flight options from St. Louis to San Francisco Bay Area. Find affordable one-way fares based on user searches. Data last updated September 29, 2025.

Mon 11/312:09 pmSTL - SFO

1 stop6h 34mFrontier

Deal found 9/27

$78

Sun 11/911:23 amSTL - SFO

1 stop11h 48mFrontier

Deal found 9/27

$84

Wed 10/298:40 pmSTL - SFO

1 stop14h 53mFrontier

Deal found 9/29

$85

Thu 10/308:40 pmSTL - SJC

1 stop16h 52mFrontier

Deal found 9/27

$88

Tue 10/288:40 pmSTL - SFO

1 stop27h 47mFrontier

Deal found 9/29

$89

Mon 11/1012:09 pmSTL - SFO

1 stop6h 34mFrontier

Deal found 9/27

$92

Fri 10/109:59 pmSTL - SFO

1 stop13h 30mFrontier

Deal found 9/28

$99

Sun 11/27:45 pmSTL - SJC

1 stop17h 47mFrontier

Deal found 9/27

$102

Mon 11/1712:09 pmSTL - SFO

2 stops10h 01mFrontier

Deal found 9/27

$105

Fri 10/312:42 pmSTL - SFO

1 stop8h 53mFrontier

Deal found 9/27

$114

Wed 11/57:45 pmSTL - SFO

2 stops19h 15mFrontier

Deal found 9/27

$117

Sun 11/27:45 pmSTL - SFO

2 stops21h 44mFrontier

Deal found 9/28

$119

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 11/12

1:55 pm-8:38 pm

1 stop8h 43m

San Jose

Sat 11/15

11:40 am-12:46 am

2 stops11h 06m

$316

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 3/3

2:55 pm-9:58 pm

1 stop9h 03m

Santa Rosa Sonoma County

Wed 3/4

2:45 pm-11:56 pm

1 stop7h 11m

$318

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 10/28

7:00 am-1:50 pm

1 stop8h 50m

San Francisco

Tue 11/4

4:39 pm-3:18 pm

1 stop20h 39m

$318

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 12/16

5:30 pm-8:08 pm

Nonstop4h 38m

San Francisco

Thu 12/25

6:00 am-5:54 pm

1 stop9h 54m

$319

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 10/28

6:00 am-1:30 pm

1 stop9h 30m

San Francisco

Mon 11/3

12:35 am-8:51 am

1 stop6h 16m

$321

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 11/27

6:30 am-11:56 am

1 stop7h 26m

San Francisco

Tue 12/2

6:00 am-2:25 pm

1 stop6h 25m

$329

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 12/16

6:00 am-1:33 pm

1 stop9h 33m

San Francisco

Thu 12/25

1:19 pm-9:34 pm

1 stop6h 15m

$329

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Fri 2/20

7:20 am-1:35 pm

1 stop8h 15m

Oakland

Tue 2/24

11:10 am-9:00 pm

1 stop7h 50m

$333

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 10/25

5:35 pm-8:10 pm

Nonstop4h 35m

San Francisco

Sat 11/1

10:35 am-4:27 pm

Nonstop3h 52m

$337

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Fri 10/31

7:00 am-1:45 pm

1 stop8h 45m

San Jose

Mon 11/3

2:39 pm-11:59 pm

1 stop7h 20m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/29

Showing 1-10 of 59 results

...

Best time to book a flight from St. Louis to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area 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 San Francisco Bay Area

What is the cheapest month to book a flight from St. Louis to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco Bay Area (average of $276). Flying from St. Louis to San Francisco Bay Area in June is currently the most expensive (average of $357). 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 XIH?

When flying from St. Louis to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Francisco Bay Area

See what other customers who have flown with Southwest, Delta, and United Airlines from St. Louis to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,245 reviews

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

8.0

Very good

4,245 reviews

Southwest

8.0

Very good

4,245 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

8.0

Very good

7,964 reviews

Southwest

8.0

Very good

4,245 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

8,924 reviews

Southwest

8.0

Very good

4,245 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,245 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,157 reviews

Southwest

8.0

Very good

4,245 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

What airport do you fly from for flights from St. Louis to San Francisco Bay Area?
Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to San Francisco Bay Area. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.
How popular is this St. Louis to San Francisco Bay Area flight route?
Within the past month, 15 users have taken a look at flights from Lambert-St Louis to San Francisco Bay Area.
How long is the flight from St. Louis to San Francisco Bay Area?
Departing from St. Louis to San Francisco Bay Area will take you 4h 38m. Airlines will cover a distance of 1730 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from St. Louis to San Francisco Bay Area one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $84. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from St. Louis to San Francisco Bay Area for a low price.
What are the most popular routes from St. Louis to San Francisco Bay Area?
Most travelers choose Lambert-St Louis - San Francisco, Lambert-St Louis - San Jose or Lambert-St Louis - Oakland when deciding on the best route from St. Louis to San Francisco Bay Area.
What are the most reliable airlines from St. Louis to San Francisco Bay Area?
Before booking your flight to San Francisco Bay Area from St. Louis, check out the most reliable airlines to get you to your destination on time: Asiana Airlines (80%), Air New Zealand (71%), Southwest( 65%).
What are the cheapest flights from St. Louis to San Francisco Bay Area?
Looking at all options, your cheapest flight can be booked for $97. While the most popular route (Lambert-St Louis - San Francisco) can be booked for $250 on average, our data indicates $1,180 when flying from St. Louis to San Francisco Bay Area.
Can I find deals for flights from St. Louis to San Francisco Bay Area that include hotel bookings?
Yes. In addition to deals on St. Louis to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to San Francisco Bay Area?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Francisco Bay Area.
Can I find deals for business class flights from St. Louis to San Francisco Bay Area?
Yes. Cheapflights offers flight deals from St. Louis to San Francisco Bay Area 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 San Francisco Bay Area?
Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco Bay Area (average of $276). Flying from St. Louis to San Francisco Bay Area in June is currently the most expensive (average of $357). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from St. Louis to San Francisco Bay Area

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$117	Average$231	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$192	Average$437	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$228	Average$386	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$246	Average$351	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$256	Average$422	FlexibilityNo cancel fee	On-time63%

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$78+ Cheap flights from St. Louis (STL) to San Francisco Bay Area

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from St. Louis to San Francisco Bay Area

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Find flight deals from St. Louis to San Francisco Bay Area

Cheapest flights from St. Louis to San Francisco Bay AreaExplore the most affordable flight options available from St. Louis to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Explore the most affordable flight options available from St. Louis to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

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Find hourly flight availability from St. Louis to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 29, 2025.

Reviews of airlines servicing San Francisco Bay Area

See what other customers who have flown with Southwest, Delta, and United Airlines from St. Louis to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Francisco Bay Area. 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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Top 5 airlines flying from St. Louis to San Francisco Bay Area

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Cheapest flights from St. Louis to San Francisco Bay Area
Explore the most affordable flight options available from St. Louis to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.