How many flights depart from St. Louis to San Francisco Bay Area on average per day?

5 flights are operational daily from St. Louis to San Francisco Bay Area as of March 2026. The most popular departure time for this route is 6:00AM, with 88% of flights per day taking off at noon.

What airlines fly to San Francisco Bay Area?

Southwest, United Airlines and Frontier are the top three most popular airlines that fly to San Francisco Bay Area from St. Louis according to our data. Southwest is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Francisco Bay Area. Keep in mind that there are 5 different airlines that fly to San Francisco Bay Area on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to San Francisco Bay Area on average per week?

As of March 2026, 36 flights take off from St. Louis and land in San Francisco Bay Area each week. The most common flight departure day for this route is Sat, with 22% of weekly flights taking off on this day.

What is the cheapest airline that flies from Lambert-St Louis to San Francisco Bay Area?

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Lambert-St Louis to San Francisco Bay Area

When did momondo last update prices for flights from Lambert-St Louis Airport to San Francisco Bay Area?

Prices for flights from Lambert-St Louis Airport to San Francisco Bay Area are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to San Francisco Bay Area?

As of March 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to San Francisco Bay Area.

How old do you have to be to fly from Lambert-St Louis Airport to San Francisco Bay Area?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to San Francisco Bay Area.

What documentation or ID do you need to fly to San Francisco Bay Area?

The travel and health documents you'll need for your trip to San Francisco Bay Area may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Bay Area. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$85 Cheap Flights from St. Louis to San Francisco Bay Area in 2026

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Find the cheapest flights from St. Louis to San Francisco Bay Area

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:21 pm - 1:17 pm

STL

SJC

17h 56m

1 stop

2:12 pm - 8:26 pm

SJC

STL

28h 14m

1 stop

$241Frontier

Thu, May 28 - Thu, Jun 4

9:55 pm - 5:44 pm

STL

SJC

21h 49m

1 stop

8:22 pm - 9:00 pm

SJC

STL

22h 38m

1 stop

$281Frontier

Thu, Apr 23 - Sun, Apr 26

6:00 am - 12:21 pm

STL

SJC

8h 21m

1 stop

6:00 am - 1:23 pm

SJC

STL

5h 23m

1 stop

$317Delta

Tue, Apr 21 - Wed, Apr 22

2:20 pm - 10:15 pm

STL

SJC

9h 55m

2 stops

1:45 pm - 11:36 pm

SJC

STL

7h 51m

1 stop

$319Delta

Tue, Apr 21 - Wed, Apr 22

4:46 pm - 10:32 pm

STL

OAK

7h 46m

1 stop

7:00 am - 6:45 pm

OAK

STL

9h 45m

1 stop

$337Alaska Airlines

Tue, May 12 - Tue, May 19

12:35 pm - 7:50 pm

STL

SJC

9h 15m

2 stops

11:40 am - 8:10 pm

SJC

STL

6h 30m

1 stop

$342Southwest

Sat, May 2 - Wed, May 6

4:46 pm - 10:32 pm

STL

OAK

7h 46m

1 stop

2:09 pm - 11:59 pm

OAK

STL

7h 50m

1 stop

$357Alaska Airlines

Wed, Apr 29 - Wed, May 6

6:05 am - 12:10 pm

STL

OAK

8h 05m

1 stop

10:45 am - 9:10 pm

OAK

STL

8h 25m

2 stops

$382Southwest

Mon, Apr 27 - Tue, Apr 28

7:05 am - 3:53 pm

STL

STS

10h 48m

2 stops

4:23 pm - 12:12 am

STS

STL

5h 49m

1 stop

$386American Airlines

Sat, May 16 - Wed, May 20

5:20 am - 3:53 pm

STL

STS

12h 33m

2 stops

12:56 pm - 10:57 pm

STS

STL

8h 01m

2 stops

$411American Airlines

Sat, Apr 25 - Sat, May 2

Delta flights from St. Louis to San Francisco Bay Area

Our best Delta deals on St. Louis to San Francisco Bay Area flight tickets

Delta

Apr 21

STL6:00 amLambert-St Louis

8h 21m

1 stop

SJC12:21 pmSan Jose

Apr 22

SJC6:00 amSan Jose

5h 23m

1 stop

STL1:23 pmLambert-St Louis

$317

Delta

Apr 21

STL2:20 pmLambert-St Louis

9h 55m

2 stops

SJC10:15 pmSan Jose

Apr 22

SJC1:45 pmSan Jose

7h 51m

1 stop

STL11:36 pmLambert-St Louis

$319

Delta

Apr 21

STL2:20 pmLambert-St Louis

22h 35m

2 stops

SJC10:55 amSan Jose

Apr 22

SJC6:32 pmSan Jose

13h 10m

2 stops

STL9:42 amLambert-St Louis

$321

Frontier flights from St. Louis to San Francisco Bay Area

Our best Frontier deals on St. Louis to San Francisco Bay Area flight tickets

Frontier

May 28

STL9:21 pmLambert-St Louis

17h 56m

1 stop

SJC1:17 pmSan Jose

Jun 4

SJC2:12 pmSan Jose

28h 14m

1 stop

STL8:26 pmLambert-St Louis

$241

Frontier

Apr 3

STL12:22 pmLambert-St Louis

9h 15m

1 stop

SJC7:37 pmSan Jose

Apr 5

SJC11:56 amSan Jose

21h 26m

1 stop

STL11:22 amLambert-St Louis

$266

Frontier

Apr 23

STL9:55 pmLambert-St Louis

21h 49m

1 stop

SJC5:44 pmSan Jose

Apr 26

SJC8:22 pmSan Jose

22h 38m

1 stop

STL9:00 pmLambert-St Louis

$281

momondo 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

Cheapest round-trip

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 5/28

9:21 pm-1:17 pm

1 stop17h 56m

San Jose

Thu 6/4

2:12 pm-8:26 pm

1 stop28h 14m

$241

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 4/23

9:55 pm-5:44 pm

1 stop21h 49m

San Jose

Sun 4/26

8:22 pm-9:00 pm

1 stop22h 38m

$281

Quickest round-trip

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 4/21

6:00 am-12:21 pm

1 stop8h 21m

San Jose

Wed 4/22

6:00 am-1:23 pm

1 stop5h 23m

$317

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 4/21

2:20 pm-10:15 pm

2 stops9h 55m

San Jose

Wed 4/22

1:45 pm-11:36 pm

1 stop7h 51m

$319

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Tue 5/12

4:46 pm-10:32 pm

1 stop7h 46m

Oakland

Tue 5/19

7:00 am-6:45 pm

1 stop9h 45m

$337

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Sat 5/2

12:35 pm-7:50 pm

2 stops9h 15m

San Jose

Wed 5/6

11:40 am-8:10 pm

1 stop6h 30m

$342

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 4/29

4:46 pm-10:32 pm

1 stop7h 46m

Oakland

Wed 5/6

2:09 pm-11:59 pm

1 stop7h 50m

$357

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Mon 4/27

6:05 am-12:10 pm

1 stop8h 05m

Oakland

Tue 4/28

10:45 am-9:10 pm

2 stops8h 25m

$382

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

7:05 am-3:53 pm

2 stops10h 48m

Santa Rosa Sonoma County

Wed 5/20

4:23 pm-12:12 am

1 stop5h 49m

$386

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 4/25

5:20 am-3:53 pm

2 stops12h 33m

Santa Rosa Sonoma County

Sat 5/2

12:56 pm-10:57 pm

2 stops8h 01m

$411

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to San Francisco Bay Area

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Francisco Bay Area?

In general, August is the cheapest month to fly from St. Louis to San Francisco Bay Area. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $371. If you aren’t able to travel to San Francisco Bay Area during the month of August, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $373.

What is the cheapest day to depart on your flight to San Francisco Bay Area?

On average, the least expensive day to fly to San Francisco Bay Area from St. Louis is on a Friday. momondo users have found tickets for Friday departures for as low as $677. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,001.

What is the cheapest time of day to depart on your flight to San Francisco Bay Area?

Our most recent data shows that the best time of day to fly to San Francisco Bay Area is at noon. Flights from St. Louis to San Francisco Bay Area during this time can be as low as $472. In contrast, the most expensive time of day to depart to San Francisco Bay Area is in the evening when prices are around $1,214.

What is the cheapest Lambert-St Louis to San Francisco Bay Area flight route?

Fly from Lambert-St Louis to San Francisco for the best Lambert-St Louis - San Francisco Bay Area flight prices

How far in advance should I book a flight to San Francisco Bay Area?

You are more likely to see cheaper flights to San Francisco Bay Area from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco Bay Area for around $432 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco Bay Area from St. Louis for as low as $327 on momondo.

What cabin class options are available on Lambert-St Louis to San Francisco Bay Area flights?

There are 4 cabin classes available to choose from on Lambert-St Louis to San Francisco Bay Area flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to San Francisco Bay Area flights?

No. A direct flight is the cheapest option for a flight between St. Louis to San Francisco Bay Area.

Cheap St. Louis to San Francisco Bay Area flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Francisco Bay Area

Fastest flight time	4h 10m
Direct flights	Every day
Airports in San Francisco Bay Area	6 airports

The fastest flight from St. Louis to San Francisco Bay Area takes 4h 10m

Direct flights go from St. Louis to San Francisco Bay Area every day.

There are 6 airports in San Francisco Bay Area. From St. Louis there are direct flights to San Francisco (SFO).

Search flight deals

When did momondo last update prices for flights from Lambert-St Louis Airport to San Francisco Bay Area?
Prices for flights from Lambert-St Louis Airport to San Francisco Bay Area are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to San Francisco Bay Area?
As of March 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to San Francisco Bay Area.
How old do you have to be to fly from Lambert-St Louis Airport to San Francisco Bay Area?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to San Francisco Bay Area.
What documentation or ID do you need to fly to San Francisco Bay Area?
The travel and health documents you'll need for your trip to San Francisco Bay Area may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Bay Area. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to San Francisco Bay Area?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to San Francisco Bay Area is Boeing 737 MAX 8 (25.99% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (19.65%), Embraer 175 (6.48%), and Airbus A319 (6.01%).

Best airlines flying from St. Louis to San Francisco Bay Area

Compare and see reviews for airlines that fly from St. Louis to San Francisco Bay Area with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $122	Free Cancellation	Rating 5.7 3,010 reviews	Search Frontier flights
American Airlines	PriceFrom $180	Free Cancellation	Rating 7.1 11,530 reviews	Search American Airlines flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 8,358 reviews	Search Delta flights
Southwest	PriceFrom $259	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights
United Airlines	PriceFrom $290	Free Cancellation	Rating 7.4 9,514 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to San Francisco Bay Area?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to San Francisco Bay Area for you.

Can I find flights from St. Louis to San Francisco Bay Area with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Francisco Bay Area from St. Louis with this policy.

How can momondo help me find flights from St. Louis to San Francisco Bay Area?

momondo provides multiple filters to help you find the best flight to San Francisco Bay Area from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to San Francisco Bay Area right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco Bay Area, momondo offers a useful price alert feature which will track prices for flights to San Francisco Bay Area from St. Louis and alert you when they change.