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

As of May 2026, 26 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 Tue, with 19% 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

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 day?

3 flights are operational daily from St. Louis to San Francisco Bay Area as of May 2026. The most popular departure time for this route is 8:00AM, with 61% of flights per day taking off at noon.

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 May 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.

$132 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.

7:38 pm - 12:27 am

STL

SFO

6h 49m

1 stop

5:16 pm - 7:23 pm

SFO

STL

24h 07m

2 stops

$299Frontier

Sat, Jun 13 - Tue, Jun 16

8:08 pm - 12:22 am

STL

SFO

6h 14m

1 stop

10:15 pm - 8:52 am

SFO

STL

8h 37m

1 stop

$304Frontier

Sat, Aug 22 - Sun, Aug 30

3:30 pm - 11:04 pm

STL

SFO

9h 34m

1 stop

10:06 pm - 7:23 pm

SFO

STL

19h 17m

2 stops

$306Frontier

Thu, Jun 4 - Tue, Aug 25

3:19 pm - 9:56 pm

STL

STS

8h 37m

1 stop

8:07 am - 5:10 pm

STS

STL

7h 03m

1 stop

$397Alaska Airlines

Tue, Sep 15 - Wed, Sep 16

4:40 pm - 10:55 pm

STL

OAK

8h 15m

1 stop

12:20 pm - 11:59 pm

OAK

STL

9h 39m

1 stop

$397Alaska Airlines

Sat, Oct 3 - Wed, Oct 7

5:40 am - 10:53 am

STL

SJC

7h 13m

1 stop

6:10 am - 4:15 pm

SJC

STL

8h 05m

2 stops

$402American Airlines

Tue, Oct 20 - Tue, Oct 27

8:45 am - 1:50 pm

STL

OAK

7h 05m

1 stop

4:20 pm - 11:45 pm

OAK

STL

5h 25m

1 stop

$421Southwest

Tue, Jun 16 - Tue, Jun 23

8:48 am - 4:21 pm

STL

OAK

9h 33m

2 stops

6:00 am - 1:33 pm

OAK

STL

5h 33m

1 stop

$426Delta

Wed, Jul 22 - Wed, Jul 29

5:25 am - 11:35 am

STL

OAK

8h 10m

2 stops

12:15 pm - 10:45 pm

OAK

STL

8h 30m

2 stops

$431Southwest

Wed, Jul 29 - Tue, Aug 4

5:29 am - 12:05 pm

STL

STS

8h 36m

1 stop

12:45 pm - 11:59 pm

STS

STL

9h 14m

1 stop

$445American Airlines

Wed, Jun 17 - Tue, Jun 23

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

Jun 13

STL7:38 pmLambert-St Louis

6h 49m

1 stop

SFO12:27 amSan Francisco

Jun 16

SFO5:16 pmSan Francisco

24h 07m

2 stops

STL7:23 pmLambert-St Louis

$299

Frontier

Aug 22

STL8:08 pmLambert-St Louis

6h 14m

1 stop

SFO12:22 amSan Francisco

Aug 30

SFO10:15 pmSan Francisco

8h 37m

1 stop

STL8:52 amLambert-St Louis

$304

Frontier

Jun 4

STL3:30 pmLambert-St Louis

9h 34m

1 stop

SFO11:04 pmSan Francisco

Aug 25

SFO10:06 pmSan Francisco

19h 17m

2 stops

STL7:23 pmLambert-St Louis

$306

Southwest flights from St. Louis to San Francisco Bay Area

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

Southwest

Aug 12

STL5:35 amLambert-St Louis

5h 50m

1 stop

OAK9:25 amOakland

Aug 12

OAK11:55 amOakland

8h 40m

1 stop

STL10:35 pmLambert-St Louis

$401

Southwest

Aug 12

STL5:35 amLambert-St Louis

5h 50m

1 stop

OAK9:25 amOakland

Aug 12

OAK12:15 pmOakland

8h 30m

2 stops

STL10:45 pmLambert-St Louis

$406

Southwest

Jun 16

STL8:45 amLambert-St Louis

7h 05m

1 stop

OAK1:50 pmOakland

Jun 23

OAK4:20 pmOakland

5h 25m

1 stop

STL11:45 pmLambert-St Louis

$421

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 Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 6/13

7:38 pm-12:27 am

1 stop6h 49m

San Francisco

Tue 6/16

5:16 pm-7:23 pm

2 stops24h 07m

$299

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 8/22

8:08 pm-12:22 am

1 stop6h 14m

San Francisco

Sun 8/30

10:15 pm-8:52 am

1 stop8h 37m

$304

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 6/4

3:30 pm-11:04 pm

1 stop9h 34m

San Francisco

Tue 8/25

10:06 pm-7:23 pm

2 stops19h 17m

$306

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 9/15

3:19 pm-9:56 pm

1 stop8h 37m

Santa Rosa Sonoma County

Wed 9/16

8:07 am-5:10 pm

1 stop7h 03m

$397

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Sat 10/3

4:40 pm-10:55 pm

1 stop8h 15m

Oakland

Wed 10/7

12:20 pm-11:59 pm

1 stop9h 39m

$397

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 10/20

5:40 am-10:53 am

1 stop7h 13m

San Jose

Tue 10/27

6:10 am-4:15 pm

2 stops8h 05m

$402

Quickest round-trip

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Tue 6/16

8:45 am-1:50 pm

1 stop7h 05m

Oakland

Tue 6/23

4:20 pm-11:45 pm

1 stop5h 25m

$421

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 7/22

8:48 am-4:21 pm

2 stops9h 33m

Oakland

Wed 7/29

6:00 am-1:33 pm

1 stop5h 33m

$426

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 7/29

5:25 am-11:35 am

2 stops8h 10m

Oakland

Tue 8/4

12:15 pm-10:45 pm

2 stops8h 30m

$431

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 6/17

5:29 am-12:05 pm

1 stop8h 36m

Santa Rosa Sonoma County

Tue 6/23

12:45 pm-11:59 pm

1 stop9h 14m

$445

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, September 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 $83. If you aren’t able to travel to San Francisco Bay Area during the month of September, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $95.

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 $613. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $992.

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 $489. In contrast, the most expensive time of day to depart to San Francisco Bay Area is in the evening when prices are around $1,092.

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 from St. Louis 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 $443 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 St. Louis to San Francisco Bay Area flights?

There are 4 cabin classes available to choose from on 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 05m
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 05m

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

Frequently asked questions about flying from 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 May 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 (25.81% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (18.18%), Embraer 175 (7.19%), and Airbus A319 (6.05%).

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 $137	Free Cancellation	Rating 5.6 2,944 reviews	Search Frontier flights
American Airlines	PriceFrom $180	Free Cancellation	Rating 7.1 11,644 reviews	Search American Airlines flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 8,449 reviews	Search Delta flights
United Airlines	PriceFrom $290	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
Southwest	PriceFrom $318	Free Cancellation	Rating 7.9 4,277 reviews	Search Southwest 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.