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Cheap flights from St. Louis to San Francisco Bay Area from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Francisco Bay Area departing on 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to San Francisco Bay Area

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:07 pm - 12:24 amSTL-SFO
14h 17m2 stops
Frontier Logo
8:48 am - 10:14 amSFO-STL
23h 26m1 stop
$192Frontier
Find Deal
Mon, Dec 8 - Fri, Dec 12
Frontier Logo
7:43 pm - 7:53 amSTL-SFO
14h 10m1 stop
Frontier Logo
6:00 am - 9:47 amSFO-STL
25h 47m2 stops
$195Frontier
Find Deal
Wed, Dec 10 - Sat, Dec 13
Delta Logo
6:30 am - 3:57 pmSTL-SFO
11h 27m2 stops
Delta Logo
5:45 am - 7:10 pmSFO-STL
11h 25m2 stops
$279Delta
Find Deal
Mon, Dec 8 - Tue, Dec 9
Alaska Airlines Logo
2:50 pm - 8:47 amSTL-SFO
19h 57m2 stops
Alaska Airlines Logo
1:19 pm - 1:54 pmSFO-STL
22h 35m2 stops
$293Alaska Airlines
Find Deal
Tue, Jan 20 - Wed, Jan 21
Delta Logo
6:30 am - 6:56 pmSTL-SFO
14h 26m2 stops
Delta Logo
5:45 am - 7:10 pmSFO-STL
11h 25m2 stops
$294Delta
Find Deal
Tue, Dec 9 - Wed, Dec 17
Alaska Airlines Logo
2:50 pm - 10:46 amSTL-SFO
21h 56m1 stop
Alaska Airlines Logo
1:19 pm - 1:54 pmSFO-STL
22h 35m2 stops
$308Alaska Airlines
Find Deal
Tue, Jan 20 - Wed, Jan 21
Southwest Logo
7:35 am - 1:00 pmSTL-OAK
7h 25m1 stop
Southwest Logo
3:55 pm - 11:40 pmOAK-STL
5h 45m1 stop
$409Southwest
Find Deal
Wed, Dec 24 - Mon, Dec 29
Southwest Logo
12:00 pm - 5:45 pmSTL-OAK
7h 45m1 stop
Southwest Logo
10:05 am - 7:55 pmOAK-STL
7h 50m2 stops
$414Southwest
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Wed, Dec 24 - Mon, Dec 29
American Airlines Logo
7:00 am - 6:31 pmSTL-SJC
13h 31m1 stop
American Airlines Logo
6:10 am - 11:51 pmSJC-STL
15h 41m1 stop
$479American Airlines
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Sat, Nov 15 - Wed, Nov 19
American Airlines Logo
6:00 am - 3:57 pmSTL-STS
11h 57m2 stops
American Airlines Logo
12:58 pm - 11:21 pmSTS-STL
8h 23m2 stops
$489American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21

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
Dec 8
STL12:07 pmLambert-St Louis
14h 17m
2 stops
SFO12:24 amSan Francisco
Dec 12
SFO8:48 amSan Francisco
23h 26m
1 stop
STL10:14 amLambert-St Louis
$192
Find similar
Frontier
Dec 10
STL7:43 pmLambert-St Louis
14h 10m
1 stop
SFO7:53 amSan Francisco
Dec 13
SFO6:00 amSan Francisco
25h 47m
2 stops
STL9:47 amLambert-St Louis
$195
Find similar
Frontier
Dec 20
STL7:43 pmLambert-St Louis
6h 41m
1 stop
SFO12:24 amSan Francisco
Jan 8
SFO6:00 amSan Francisco
8h 49m
1 stop
STL4:49 pmLambert-St Louis
$200
Find similar

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
Dec 8
STL6:30 amLambert-St Louis
11h 27m
2 stops
SFO3:57 pmSan Francisco
Dec 9
SFO5:45 amSan Francisco
11h 25m
2 stops
STL7:10 pmLambert-St Louis
$279
Find similar
Delta
Dec 9
STL6:30 amLambert-St Louis
14h 26m
2 stops
SFO6:56 pmSan Francisco
Dec 17
SFO5:45 amSan Francisco
11h 25m
2 stops
STL7:10 pmLambert-St Louis
$294
Find similar
Delta
Dec 8
STL2:20 pmLambert-St Louis
10h 11m
2 stops
SFO10:31 pmSan Francisco
Dec 13
SFO4:37 pmSan Francisco
14h 33m
2 stops
STL9:10 amLambert-St Louis
$304
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to San Francisco Bay Area 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, momondo users made 832,500 searches. Data last updated November 2, 2025.
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 Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 12/8

12:07 pm-12:24 am

2 stops14h 17m

San Francisco

Fri 12/12

8:48 am-10:14 am

1 stop23h 26m

$192

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 12/10

7:43 pm-7:53 am

1 stop14h 10m

San Francisco

Sat 12/13

6:00 am-9:47 am

2 stops25h 47m

$195

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 12/8

6:30 am-3:57 pm

2 stops11h 27m

San Francisco

Tue 12/9

5:45 am-7:10 pm

2 stops11h 25m

$279

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 1/20

2:50 pm-8:47 am

2 stops19h 57m

San Francisco

Wed 1/21

1:19 pm-1:54 pm

2 stops22h 35m

$293

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 12/9

6:30 am-6:56 pm

2 stops14h 26m

San Francisco

Wed 12/17

5:45 am-7:10 pm

2 stops11h 25m

$294

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 1/20

2:50 pm-10:46 am

1 stop21h 56m

San Francisco

Wed 1/21

1:19 pm-1:54 pm

2 stops22h 35m

$308

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 12/24

7:35 am-1:00 pm

1 stop7h 25m

Oakland

Mon 12/29

3:55 pm-11:40 pm

1 stop5h 45m

$409

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 12/24

12:00 pm-5:45 pm

1 stop7h 45m

Oakland

Mon 12/29

10:05 am-7:55 pm

2 stops7h 50m

$414

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Sat 11/15

7:00 am-6:31 pm

1 stop13h 31m

San Jose

Wed 11/19

6:10 am-11:51 pm

1 stop15h 41m

$479

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 2/18

6:00 am-3:57 pm

2 stops11h 57m

Santa Rosa Sonoma County

Sat 2/21

12:58 pm-11:21 pm

2 stops8h 23m

$489

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco Bay Area from

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

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

In general, January 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 $337. If you aren’t able to travel to San Francisco Bay Area during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $338.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $589. 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 $1,045.

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 $468. In contrast, the most expensive time of day to depart to San Francisco Bay Area is in the evening when prices are around $1,191.

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 $380 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 $322 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 25m

Direct flights

Every day

Airports in San Francisco Bay Area

1 airport
The fastest flight from St. Louis to San Francisco Bay Area takes 4h 25m
Direct flights go from St. Louis to San Francisco Bay Area every day.
There is 1 airport near San Francisco Bay Area: 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?

  • 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?

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
FrontierPriceFrom $122Free CancellationRating
5.8
3,120 reviews
Search Frontier flights
American AirlinesPriceFrom $182Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
8,994 reviews
Search United Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,997 reviews
Search Delta flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,241 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.

An easier way to manage your San Francisco Bay Area 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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