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

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

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

23 flights are operational weekly from San Francisco Bay Area to St. Louis as of September 2025. The most popular departure day for this route is Mon, with 30% of flights per week taking off on this day.

What airlines fly to St. Louis?

United Airlines, Southwest and Delta are the top three most popular airlines that fly to St. Louis from San Francisco Bay Area according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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

3 flights are operational daily from San Francisco Bay Area to St. Louis as of September 2025. The most popular departure time for this route is 10:00AM, with 79% of flights per day taking off at noon.

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

Prices for flights from San Francisco Bay Area to Lambert-St Louis Airport were last updated today.

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

There are 6 operators available for flights from San Francisco Bay Area to Lambert-St Louis Airport as of September 2025.

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

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 San Francisco Bay Area to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$78 Cheap Flights from San Francisco Bay Area to St. Louis in 2025/26

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:27 pm - 9:07 amSJC-STL

18h 40m1 stop

2:42 pm - 5:34 pmSTL-SJC

28h 52m1 stop

$164Frontier

Find Deal

vie., nov. 14 - dom., nov. 16

12:27 pm - 9:07 amSJC-STL

18h 40m1 stop

7:45 pm - 5:34 pmSTL-SJC

23h 49m2 stops

$190Frontier

Find Deal

vie., nov. 14 - dom., nov. 16

7:15 am - 6:40 pmSJC-STL

9h 25m2 stops

6:50 am - 3:57 pmSTL-SJC

11h 07m2 stops

$294Delta

Find Deal

mié., oct. 29 - mar., nov. 4

7:15 am - 6:40 pmSJC-STL

9h 25m2 stops

2:29 pm - 10:08 pmSTL-SJC

9h 39m2 stops

$314Delta

Find Deal

mié., oct. 29 - mar., nov. 4

8:00 am - 6:36 pmSJC-STL

8h 36m1 stop

7:00 am - 1:18 pmSTL-SJC

8h 18m1 stop

$337American Airlines

Find Deal

mié., oct. 29 - mar., nov. 4

12:05 pm - 7:25 pmSJC-STL

5h 20m1 stop

5:35 am - 9:50 amSTL-SJC

6h 15m1 stop

$347Southwest

Find Deal

lun., nov. 24 - mar., dic. 2

6:45 am - 3:15 pmSJC-STL

6h 30m1 stop

4:25 pm - 8:30 pmSTL-SJC

6h 05m1 stop

$352Southwest

Find Deal

jue., oct. 23 - jue., oct. 30

1:00 pm - 10:00 pmSJC-STL

7h 00m1 stop

5:15 am - 9:52 amSTL-SJC

6h 37m1 stop

$387United Airlines

Find Deal

jue., oct. 16 - dom., oct. 19

6:00 am - 4:17 pmSJC-STL

8h 17m1 stop

7:31 am - 12:01 pmSTL-SJC

6h 30m1 stop

$403American Airlines

Find Deal

jue., oct. 23 - dom., oct. 26

3:55 pm - 11:58 pmSJC-STL

6h 03m1 stop

1:40 pm - 5:17 pmSTL-SJC

5h 37m1 stop

$427United Airlines

Find Deal

lun., oct. 6 - vie., oct. 10

Delta flights from San Francisco Bay Area to St. Louis

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

Delta

Oct 29

SJC7:15 amSan Jose

9h 25m

2 stops

STL6:40 pmLambert-St Louis

Nov 4

STL6:50 amLambert-St Louis

11h 07m

2 stops

SJC3:57 pmSan Jose

$294

Find similar

Delta

Oct 29

SJC7:15 amSan Jose

9h 25m

2 stops

STL6:40 pmLambert-St Louis

Nov 4

STL2:29 pmLambert-St Louis

9h 39m

2 stops

SJC10:08 pmSan Jose

$314

Find similar

Delta

Oct 29

SJC6:35 amSan Jose

7h 20m

1 stop

STL3:55 pmLambert-St Louis

Nov 4

STL2:29 pmLambert-St Louis

9h 39m

2 stops

SJC10:08 pmSan Jose

$315

Find similar

American Airlines flights from San Francisco Bay Area to St. Louis

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

American Airlines

Oct 29

SJC8:00 amSan Jose

8h 36m

1 stop

STL6:36 pmLambert-St Louis

Nov 4

STL7:00 amLambert-St Louis

8h 18m

1 stop

SJC1:18 pmSan Jose

$337

Find similar

American Airlines

Oct 23

SJC6:00 amSan Jose

8h 17m

1 stop

STL4:17 pmLambert-St Louis

Oct 26

STL7:31 amLambert-St Louis

6h 30m

1 stop

SJC12:01 pmSan Jose

$403

Find similar

American Airlines

Oct 9

SJC8:00 amSan Jose

9h 24m

1 stop

STL7:24 pmLambert-St Louis

Oct 13

STL6:23 pmLambert-St Louis

6h 15m

1 stop

SJC10:38 pmSan Jose

$422

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

vie. 11/14

12:27 pm-9:07 am

1 stop18h 40m

Lambert-St Louis

dom. 11/16

2:42 pm-5:34 pm

1 stop28h 52m

$164

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

vie. 11/14

12:27 pm-9:07 am

1 stop18h 40m

Lambert-St Louis

dom. 11/16

7:45 pm-5:34 pm

2 stops23h 49m

$190

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 10/29

7:15 am-6:40 pm

2 stops9h 25m

Lambert-St Louis

mar. 11/4

6:50 am-3:57 pm

2 stops11h 07m

$294

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 10/29

7:15 am-6:40 pm

2 stops9h 25m

Lambert-St Louis

mar. 11/4

2:29 pm-10:08 pm

2 stops9h 39m

$314

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 10/29

8:00 am-6:36 pm

1 stop8h 36m

Lambert-St Louis

mar. 11/4

7:00 am-1:18 pm

1 stop8h 18m

$337

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

lun. 11/24

12:05 pm-7:25 pm

1 stop5h 20m

Lambert-St Louis

mar. 12/2

5:35 am-9:50 am

1 stop6h 15m

$347

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

jue. 10/23

6:45 am-3:15 pm

1 stop6h 30m

Lambert-St Louis

jue. 10/30

4:25 pm-8:30 pm

1 stop6h 05m

$352

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

jue. 10/16

1:00 pm-10:00 pm

1 stop7h 00m

Lambert-St Louis

dom. 10/19

5:15 am-9:52 am

1 stop6h 37m

$387

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

jue. 10/23

6:00 am-4:17 pm

1 stop8h 17m

Lambert-St Louis

dom. 10/26

7:31 am-12:01 pm

1 stop6h 30m

$403

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

lun. 10/6

3:55 pm-11:58 pm

1 stop6h 03m

Lambert-St Louis

vie. 10/10

1:40 pm-5:17 pm

1 stop5h 37m

$427

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 San Francisco Bay Area to St. Louis

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 St. Louis?

In general, January is the cheapest month to fly from San Francisco Bay Area to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $328. The month of February is another great option to travel to St. Louis, with average flight prices from San Francisco Bay Area averaging around $338.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $419. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $468. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from San Francisco Bay Area at noon is the least expensive time of day to depart. momondo users have found prices as low as $415 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $444 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from San Francisco Bay Area when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $404 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from San Francisco Bay Area for as low as $348 on momondo.

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

There are 4 cabin classes available to choose from on San Francisco Bay Area to Lambert-St Louis 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 San Francisco Bay Area to St. Louis flights?

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

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

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

Fastest flight time	3h 40m
Direct flights	Every day
Airports in St. Louis	1 airport

The fastest flight from San Francisco Bay Area to St. Louis takes 3h 40m

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

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from San Francisco Bay Area to Lambert-St Louis Airport?
Prices for flights from San Francisco Bay Area to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from San Francisco Bay Area to Lambert-St Louis Airport?
There are 6 operators available for flights from San Francisco Bay Area to Lambert-St Louis Airport as of September 2025.
How old do you have to be to fly from San Francisco Bay Area to Lambert-St Louis Airport?
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 San Francisco Bay Area to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco Bay Area to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco Bay Area to St. Louis is Boeing 737-800 Passenger/BBJ2 (winglets) (16.81% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (15.77%), Boeing 737-700 Passenger/BBJ1 (winglets) (11.21%), and Embraer 175 (10.53%).

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $114	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
Delta	PriceFrom $189	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $246	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $303	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $450	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Florissant

Maryland Heights

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

It is quick and easy to find San Francisco Bay Area to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Yes. momondo allows you to filter the results for San Francisco Bay Area to St. Louis flights to just show those with flexible booking policies.

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

Once you have performed a search for San Francisco Bay Area to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from San Francisco Bay Area to St. Louis from $78

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

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Delta flights from San Francisco Bay Area to St. Louis

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

American Airlines flights from San Francisco Bay Area to St. Louis

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

momondo Fare Finder

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

See travel insights to St. Louis from

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

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

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

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

How far in advance should I book a flight to St. Louis?

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

There are 4 cabin classes available to choose from on San Francisco Bay Area to Lambert-St Louis 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 San Francisco Bay Area to St. Louis flights?

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

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

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

What airlines fly to St. Louis?

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

3 flights are operational daily from San Francisco Bay Area to St. Louis as of September 2025. The most popular departure time for this route is 10:00AM, with 79% of flights per day taking off at noon.

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

23 flights are operational weekly from San Francisco Bay Area to St. Louis as of September 2025. The most popular departure day for this route is Mon, with 30% of flights per week taking off on this day.

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

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

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from San Francisco Bay Area to St. Louis?

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

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

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri