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Cheap flights from San Francisco to St. Louis from $54

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to St. Louis departing on 1/9. 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 San Francisco to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from San Francisco to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from San Francisco to St. Louis.

Cheap last minute flights

Planning a quick getaway from San Francisco to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from San Francisco to St. Louis

Find recent round-trip train or bus tickets from San Francisco to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
7:09 pm - 12:09 amSTL-SFO
7h 00m1 stop
$108Frontier
Find Deal
Thu, Jan 16 - Sat, Jan 25
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
7:09 pm - 12:09 amSTL-SFO
7h 00m1 stop
$118Frontier
Find Deal
Thu, Jan 30 - Sat, Feb 1
1:00 pm - 6:59 pmSFO-STL
3h 59mnonstop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$227United Airlines
Find Deal
Sat, Jan 25 - Sun, Jan 26
8:55 am - 2:55 pmSFO-STL
4h 00mnonstop
1:05 pm - 3:30 pmSTL-SFO
4h 25mnonstop
$228Southwest
Find Deal
Sat, Mar 1 - Thu, Mar 27
1:20 pm - 10:20 pmSFO-STL
7h 00m1 stop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$237United Airlines
Find Deal
Fri, Jan 17 - Fri, Jan 24
9:00 am - 7:23 pmSFO-STL
8h 23m1 stop
5:12 pm - 11:04 pmSTL-SFO
7h 52m1 stop
$246American Airlines
Find Deal
Sat, Jan 25 - Tue, Feb 4
3:49 pm - 11:57 pmSFO-STL
6h 08m1 stop
2:27 pm - 6:59 pmSTL-SFO
6h 32m1 stop
$247American Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 8
6:00 am - 3:35 pmSFO-STL
7h 35m1 stop
5:00 pm - 11:54 pmSTL-SFO
8h 54m1 stop
$256Delta
Find Deal
Sat, Jan 18 - Tue, Jan 21
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
10:25 am - 12:55 pmSTL-SFO
4h 30mnonstop
$273Southwest
Find Deal
Fri, Jan 31 - Sun, Feb 2
10:45 pm - 9:36 amSFO-STL
8h 51m1 stop
6:00 am - 1:23 pmSTL-SFO
9h 23m1 stop
$287Delta
Find Deal
Fri, Jan 17 - Tue, Jan 21
10:53 am - 7:34 pmSFO-STL
6h 41m1 stop
$54Frontier
Find Deal
Thu, Jan 9
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
$60Frontier
Find Deal
Thu, Jan 16
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
$114Southwest
Find Deal
Wed, Jan 22
11:05 pm - 10:54 amSFO-STL
9h 49m1 stop
$123United Airlines
Find Deal
Sat, Feb 1
5:55 am - 4:23 pmSFO-STL
8h 28m2 stops
$128American Airlines
Find Deal
Sat, Feb 1
12:10 pm - 6:09 pmSFO-STL
3h 59mnonstop
$135United Airlines
Find Deal
Tue, Jan 21
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
$151Southwest
Find Deal
Tue, Jan 7
6:15 am - 2:54 pmSFO-STL
6h 39m1 stop
$158Delta
Find Deal
Wed, Jan 15
12:40 am - 10:54 amSFO-STL
8h 14m1 stop
$159Delta
Find Deal
Mon, Jan 20
12:27 pm - 10:43 pmSFO-STL
8h 16m2 stops
$163American Airlines
Find Deal
Tue, Feb 18
5:40 am - 4:59 pmSFO-STL
9h 19m1 stop
7:15 am - 1:49 pmSTL-SFO
8h 34m1 stop
$342Delta
Find Deal
Thu, Dec 19 - Wed, Jan 8
5:40 am - 4:59 pmSFO-STL
9h 19m1 stop
6:04 am - 11:14 amSTL-SFO
7h 10m1 stop
$368Delta
Find Deal
Thu, Dec 19 - Mon, Dec 23
10:11 pm - 8:29 pmSFO-STL
20h 18m1 stop
10:09 pm - 12:21 amSTL-SFO
28h 12m1 stop
$393Frontier
Find Deal
Thu, Dec 19 - Sun, Jan 5
4:28 pm - 12:06 amSFO-STL
5h 38m1 stop
1:45 pm - 9:04 pmSTL-SFO
9h 19m1 stop
$436American Airlines
Find Deal
Sat, Dec 21 - Wed, Dec 25
4:28 pm - 12:06 amSFO-STL
5h 38m1 stop
1:45 pm - 9:04 pmSTL-SFO
9h 19m1 stop
$447American Airlines
Find Deal
Sun, Dec 22 - Wed, Dec 25
2:55 pm - 11:59 pmSFO-STL
7h 04m1 stop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$547United Airlines
Find Deal
Sun, Dec 22 - Wed, Jan 8
2:55 pm - 11:59 pmSFO-STL
7h 04m1 stop
1:45 pm - 5:50 pmSTL-SFO
6h 05m1 stop
$556United Airlines
Find Deal
Sun, Dec 22 - Wed, Jan 8
12:04 pm - 8:29 pmSFO-STL
6h 25m1 stop
6:46 pm - 12:11 amSTL-SFO
7h 25m1 stop
$573Frontier
Find Deal
Fri, Dec 20 - Wed, Jan 8
12:25 pm - 11:50 pmSFO-STL
9h 25m2 stops
5:40 am - 12:30 pmSTL-SFO
8h 50m1 stop
$621Southwest
Find Deal
Thu, Dec 19 - Sun, Jan 5
3:00 pm - 11:50 pmSFO-STL
6h 50m1 stop
2:00 pm - 4:25 pmSTL-SFO
4h 25mnonstop
$642Southwest
Find Deal
Thu, Dec 19 - Sun, Jan 5
1:00 pm - 6:59 pmSFO-STL
3h 59mnonstop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$227United Airlines
Find Deal
Sat, Jan 25 - Sun, Jan 26
8:55 am - 2:55 pmSFO-STL
4h 00mnonstop
1:05 pm - 3:30 pmSTL-SFO
4h 25mnonstop
$228Southwest
Find Deal
Sat, Mar 1 - Thu, Mar 27
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
10:25 am - 12:55 pmSTL-SFO
4h 30mnonstop
$273Southwest
Find Deal
Fri, Jan 31 - Sun, Feb 2
1:00 pm - 6:59 pmSFO-STL
3h 59mnonstop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$317United Airlines
Find Deal
Sat, Jan 18 - Mon, Jan 27
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
$318Southwest
Find Deal
Tue, Jan 28 - Fri, Jan 31
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
$326Southwest
Find Deal
Tue, Jan 7 - Thu, Jan 9
12:10 pm - 6:09 pmSFO-STL
3h 59mnonstop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$354United Airlines
Find Deal
Thu, Jan 16 - Tue, Jan 21
11:00 am - 4:55 pmSFO-STL
3h 55mnonstop
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
$355Southwest
Find Deal
Sun, Feb 2 - Mon, Feb 3
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
$372United Airlines
Find Deal
Fri, Feb 28 - Tue, Mar 4
6:45 pm - 12:38 amSFO-STL
3h 53mnonstop
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
$392United Airlines
Find Deal
Mon, Jan 6 - Fri, Jan 10

American Airlines flights from San Francisco to St. Louis

Our best American Airlines deals on San Francisco to St. Louis flight tickets
American Airlines
Jan 25
SFO9:00 amSan Francisco
8h 23m
1 stop
STL7:23 pmLambert-St Louis
Feb 4
STL5:12 pmLambert-St Louis
7h 52m
1 stop
SFO11:04 pmSan Francisco
American Airlines
Feb 1
SFO3:49 pmSan Francisco
6h 08m
1 stop
STL11:57 pmLambert-St Louis
Feb 8
STL2:27 pmLambert-St Louis
6h 32m
1 stop
SFO6:59 pmSan Francisco
American Airlines
Jan 25
SFO5:55 amSan Francisco
8h 28m
2 stops
STL4:23 pmLambert-St Louis
Jan 26
STL11:38 amLambert-St Louis
9h 39m
1 stop
SFO7:17 pmSan Francisco

Frontier flights from San Francisco to St. Louis

Our best Frontier deals on San Francisco to St. Louis flight tickets
Frontier
Jan 16
SFO9:10 pmSan Francisco
10h 06m
1 stop
STL9:16 amLambert-St Louis
Jan 25
STL7:09 pmLambert-St Louis
7h 00m
1 stop
SFO12:09 amSan Francisco
Frontier
Jan 30
SFO9:10 pmSan Francisco
10h 06m
1 stop
STL9:16 amLambert-St Louis
Feb 1
STL7:09 pmLambert-St Louis
7h 00m
1 stop
SFO12:09 amSan Francisco
Frontier
Jan 17
SFO9:10 pmSan Francisco
10h 06m
1 stop
STL9:16 amLambert-St Louis
Jan 27
STL7:09 pmLambert-St Louis
7h 00m
1 stop
SFO12:09 amSan Francisco

See travel insights to St. Louis from

How to get the cheapest flight ticket from San Francisco 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?

In general, January is the cheapest month to fly from San Francisco to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $329. The month of February is another great option to travel to St. Louis, with average flight prices from San Francisco averaging around $337.

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 Monday when prices can be found for as low as $341. 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 Friday because tickets tend to average around $418. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $295 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $422 per ticket.

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

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

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

The best time to book a flight to St. Louis from San Francisco is 35 days out, which is when prices tend to be around $382. In the past 72 hours, momondo users found flights from San Francisco to St. Louis for as low as $151.

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

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

You could potentially save up to 52% on your flight if you consider stops on a San Francisco to St. Louis flight.

How have San Francisco to St. Louis flight prices changed over time?

As of December 2024, prices for San Francisco to St. Louis flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to St. Louis (SFO to STL) flight deals and tips

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

Best Price Found

$54

Fastest flight time

3h 46m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from San Francisco in the past 72 hours is $54. The best round-trip flight deal from San Francisco to St. Louis found on momondo in the last 72 hours is $108.
The fastest flight from San Francisco to St. Louis takes 3h 46m
Direct flights go from San Francisco to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is San Francisco to Lambert-St Louis by plane?

    The straight-line distance from San Francisco to Lambert-St Louis is 1739.7 mi. 3h 46m is a normal flight duration for this route.

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

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

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

  • How old do you have to be to fly from San Francisco Airport 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 Airport to Lambert-St Louis Airport.

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

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 San Francisco to St. Louis?

  • What is the most popular airline from San Francisco to St. Louis?


Best airlines flying from San Francisco to St. Louis

Compare and see reviews for airlines that fly from San Francisco to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $119Free CancellationRating
6.1
3,478 reviews
Search Frontier flights
DeltaPriceFrom $257Free CancellationRating
8.0
8,600 reviews
Search Delta flights
American AirlinesPriceFrom $257Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $275Free CancellationRating
7.4
9,048 reviews
Search United Airlines flights
SouthwestPriceFrom $347Free CancellationRating
8.1
4,836 reviews
Search Southwest flights
  • Southwest Flights From San Francisco to St. Louis

    The lowest priced Southwest flight from San Francisco to St. Louis from the last 72 hours was $347. Generally, Southwest has 3 flights on this route every week with an average price of $432. Southwest is rated 8.1/10 by our users.

  • United Airlines Flights From San Francisco to St. Louis

    Another popular option for San Francisco to St. Louis flights is United Airlines (7.4/10, 9,048 ratings). United Airlines flies from San Francisco to St. Louis around 3 times per week, with deals starting from $275 round-trip and rising to an average price of around $439.


Why use momondo?

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

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 San Francisco to St. Louis for you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from San Francisco.

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

Price alerts on flights to St. Louis from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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