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Cheap flights from St. Louis to San Francisco Bay Area from $103

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 11/1. 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

Frontier Logo
4:58 pm - 9:21 pmSTL-SFO
6h 23m1 stop
Frontier Logo
8:00 am - 4:03 pmSFO-STL
6h 03m1 stop
$218Frontier
Find Deal
Sat, Sep 6 - Sat, Sep 13
Frontier Logo
5:40 pm - 10:25 amSTL-SFO
18h 45m1 stop
Frontier Logo
8:53 pm - 11:47 pmSFO-STL
24h 54m1 stop
$225Frontier
Find Deal
Tue, Aug 12 - Sat, Aug 16
Southwest Logo
9:10 am - 11:20 amSTL-SFO
4h 10mnonstop
Southwest Logo
1:45 pm - 7:35 pmSFO-STL
3h 50mnonstop
$293Southwest
Find Deal
Wed, Aug 20 - Tue, Aug 26
Delta Logo
2:29 pm - 10:08 pmSTL-SJC
9h 39m2 stops
Delta Logo
11:35 am - 12:24 amSJC-STL
10h 49m2 stops
$294Delta
Find Deal
Wed, Oct 8 - Tue, Oct 14
American Airlines Logo
9:23 am - 4:43 pmSTL-SFO
9h 20m1 stop
American Airlines Logo
8:00 am - 8:25 pmSFO-STL
10h 25m1 stop
$295American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
United Airlines Logo
5:29 pm - 8:07 pmSTL-SFO
4h 38mnonstop
United Airlines Logo
10:35 am - 4:27 pmSFO-STL
3h 52mnonstop
$296United Airlines
Find Deal
Thu, Oct 30 - Wed, Nov 19
United Airlines Logo
5:49 pm - 8:10 pmSTL-SFO
4h 21mnonstop
United Airlines Logo
10:51 am - 4:53 pmSFO-STL
4h 02mnonstop
$299United Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Southwest Logo
9:10 am - 11:20 amSTL-SFO
4h 10mnonstop
Southwest Logo
11:25 am - 10:05 pmSFO-STL
8h 40m1 stop
$303Southwest
Find Deal
Wed, Aug 20 - Tue, Aug 26
Delta Logo
5:15 pm - 10:58 pmSTL-SJC
7h 43m1 stop
Delta Logo
7:15 am - 12:24 amSJC-STL
15h 09m2 stops
$303Delta
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Wed, Oct 8 - Wed, Oct 15
American Airlines Logo
7:01 am - 2:30 pmSTL-SFO
9h 29m1 stop
American Airlines Logo
11:08 pm - 11:35 amSFO-STL
10h 27m1 stop
$317American Airlines
Find Deal
Thu, Aug 28 - Tue, Sep 2

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
Sep 6
STL4:58 pmLambert-St Louis
6h 23m
1 stop
SFO9:21 pmSan Francisco
Sep 13
SFO8:00 amSan Francisco
6h 03m
1 stop
STL4:03 pmLambert-St Louis
$218
Find similar
Frontier
Aug 12
STL5:40 pmLambert-St Louis
18h 45m
1 stop
SFO10:25 amSan Francisco
Aug 16
SFO8:53 pmSan Francisco
24h 54m
1 stop
STL11:47 pmLambert-St Louis
$225
Find similar
Frontier
Nov 8
STL4:35 pmLambert-St Louis
6h 47m
1 stop
SFO9:22 pmSan Francisco
Nov 13
SFO5:45 amSan Francisco
5h 49m
1 stop
STL1:34 pmLambert-St Louis
$226
Find similar

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 20
STL9:10 amLambert-St Louis
4h 10m
SFO11:20 amSan Francisco
Aug 26
SFO1:45 pmSan Francisco
3h 50m
STL7:35 pmLambert-St Louis
$293
Find similar
Southwest
Aug 20
STL9:10 amLambert-St Louis
4h 10m
SFO11:20 amSan Francisco
Aug 26
SFO11:25 amSan Francisco
8h 40m
1 stop
STL10:05 pmLambert-St Louis
$303
Find similar
Southwest
Oct 8
STL6:15 amLambert-St Louis
6h 50m
1 stop
SJC11:05 amSan Jose
Oct 14
SJC4:30 pmSan Jose
5h 40m
1 stop
STL12:10 amLambert-St Louis
$308
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 July 31, 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

Sat 9/6

4:58 pm-9:21 pm

1 stop6h 23m

San Francisco

Sat 9/13

8:00 am-4:03 pm

1 stop6h 03m

$218

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 8/12

5:40 pm-10:25 am

1 stop18h 45m

San Francisco

Sat 8/16

8:53 pm-11:47 pm

1 stop24h 54m

$225

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 8/20

9:10 am-11:20 am

Nonstop4h 10m

San Francisco

Tue 8/26

1:45 pm-7:35 pm

Nonstop3h 50m

$293

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 10/8

2:29 pm-10:08 pm

2 stops9h 39m

San Jose

Tue 10/14

11:35 am-12:24 am

2 stops10h 49m

$294

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 8/26

9:23 am-4:43 pm

1 stop9h 20m

San Francisco

Tue 9/2

8:00 am-8:25 pm

1 stop10h 25m

$295

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 10/30

5:29 pm-8:07 pm

Nonstop4h 38m

San Francisco

Wed 11/19

10:35 am-4:27 pm

Nonstop3h 52m

$296

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 9/6

5:49 pm-8:10 pm

Nonstop4h 21m

San Francisco

Sat 9/13

10:51 am-4:53 pm

Nonstop4h 02m

$299

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 8/20

9:10 am-11:20 am

Nonstop4h 10m

San Francisco

Tue 8/26

11:25 am-10:05 pm

1 stop8h 40m

$303

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 10/8

5:15 pm-10:58 pm

1 stop7h 43m

San Jose

Wed 10/15

7:15 am-12:24 am

2 stops15h 09m

$303

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 8/28

7:01 am-2:30 pm

1 stop9h 29m

San Francisco

Tue 9/2

11:08 pm-11:35 am

1 stop10h 27m

$317

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, February 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 $331. If you aren’t able to travel to San Francisco Bay Area during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $337.

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 $569. 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 $457. In contrast, the most expensive time of day to depart to San Francisco Bay Area is in the evening when prices are around $1,184.

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 $378 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 $337 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

Best Price Found

$103

Fastest flight time

4h 10m

Direct flights

Every day

Airports in San Francisco Bay Area

4 airports
The best one-way flight to San Francisco Bay Area from St. Louis in the past 72 hours is $103. The best round-trip flight deal from St. Louis to San Francisco Bay Area found on momondo in the last 72 hours is $218.
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 4 airports near San Francisco Bay Area: Santa Rosa Sonoma County (STS), Oakland (OAK), San Francisco (SFO), San Jose (SJC)
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 $118Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $242Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,246 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

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