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Cheap flights from St. Louis to San Francisco from $55

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 departing on 2/26. 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

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to San Francisco 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 St. Louis to San Francisco.

Cheap last minute flights

Planning a quick getaway from St. Louis to San Francisco? 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 San Francisco, so you can enjoy a seamless trip without layovers.

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

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

All round-trip flight deals from St. Louis to San Francisco

The cheapest plane tickets from St. Louis to San Francisco found on KAYAK recently.
11:08 pm - 9:42 amSTL-SFO
12h 34m1 stop
7:26 pm - 9:16 amSFO-STL
11h 50m1 stop
$110Frontier
Find Deal
Mon, Mar 3 - Tue, Mar 11
11:08 pm - 9:42 amSTL-SFO
12h 34m1 stop
7:26 pm - 9:16 amSFO-STL
11h 50m1 stop
$111Frontier
Find Deal
Mon, Mar 3 - Tue, Mar 11
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
$227United Airlines
Find Deal
Tue, Feb 18 - Tue, Feb 25
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
5:00 am - 3:11 pmSFO-STL
8h 11m1 stop
$237United Airlines
Find Deal
Tue, Feb 18 - Tue, Feb 25
5:45 am - 11:29 amSTL-SFO
7h 44m1 stop
12:32 am - 10:58 amSFO-STL
8h 26m1 stop
$247American Airlines
Find Deal
Wed, Feb 19 - Tue, Feb 25
7:30 pm - 11:59 pmSTL-SFO
6h 29m1 stop
5:20 pm - 12:32 amSFO-STL
5h 12m1 stop
$257Delta
Find Deal
Thu, Mar 27 - Mon, Mar 31
1:40 pm - 4:00 pmSTL-SFO
4h 20mnonstop
10:40 am - 4:25 pmSFO-STL
3h 45mnonstop
$262Southwest
Find Deal
Wed, Apr 30 - Tue, May 6
10:25 am - 12:55 pmSTL-SFO
4h 30mnonstop
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
$272Southwest
Find Deal
Tue, Feb 18 - Tue, Feb 25
5:45 am - 3:19 pmSTL-SFO
11h 34m1 stop
12:32 am - 10:58 amSFO-STL
8h 26m1 stop
$276American Airlines
Find Deal
Tue, Feb 18 - Mon, Feb 24
7:15 am - 1:47 pmSTL-SFO
8h 32m1 stop
6:15 am - 2:16 pmSFO-STL
6h 01m1 stop
$287Delta
Find Deal
Tue, Feb 18 - Tue, Apr 15
7:04 pm - 12:43 amSTL-SFO
7h 39m1 stop
$55Frontier
Find Deal
Wed, Feb 26
7:04 pm - 12:43 amSTL-SFO
7h 39m1 stop
$56Frontier
Find Deal
Wed, Feb 26
7:00 am - 9:38 amSTL-SFO
4h 38mnonstop
$114United Airlines
Find Deal
Thu, Mar 20
5:45 am - 11:30 amSTL-SFO
7h 45m1 stop
$124American Airlines
Find Deal
Sun, Feb 23
6:00 am - 1:20 pmSTL-SFO
9h 20m1 stop
$129Delta
Find Deal
Sun, Feb 23
7:00 am - 9:38 amSTL-SFO
4h 38mnonstop
$142United Airlines
Find Deal
Mon, Mar 10
2:20 pm - 4:45 pmSTL-SFO
4h 25mnonstop
$149Southwest
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Wed, Mar 12
5:45 am - 10:10 amSTL-SFO
6h 25m1 stop
$158Southwest
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Thu, Mar 13
6:00 am - 1:20 pmSTL-SFO
9h 20m1 stop
$159Delta
Find Deal
Tue, Feb 18
5:45 am - 1:20 pmSTL-SFO
9h 35m1 stop
$269American Airlines
Find Deal
Sun, Apr 13
8:31 pm - 7:16 amSTL-SFO
12h 45m1 stop
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
$272Frontier
Find Deal
Sun, Jan 26 - Thu, Jan 30
7:09 pm - 12:09 amSTL-SFO
7h 00m1 stop
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
$292Frontier
Find Deal
Sat, Jan 25 - Thu, Jan 30
8:31 pm - 7:16 amSTL-SFO
12h 45m1 stop
9:10 pm - 9:16 amSFO-STL
10h 06m1 stop
$302Frontier
Find Deal
Fri, Jan 24 - Thu, Jan 30
6:00 am - 1:23 pmSTL-SFO
9h 23m1 stop
5:30 am - 1:18 pmSFO-STL
5h 48m1 stop
$379Delta
Find Deal
Wed, Jan 22 - Sun, Jan 26
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
12:10 pm - 6:09 pmSFO-STL
3h 59mnonstop
$449United Airlines
Find Deal
Wed, Jan 22 - Thu, Jan 23
7:00 am - 9:45 amSTL-SFO
4h 45mnonstop
11:59 pm - 9:55 amSFO-STL
7h 56m1 stop
$459United Airlines
Find Deal
Wed, Jan 22 - Thu, Jan 23
9:25 am - 8:15 pmSTL-SFO
12h 50m2 stops
10:35 am - 10:20 pmSFO-STL
9h 45m1 stop
$463Southwest
Find Deal
Sat, Jan 25 - Mon, Jan 27
9:25 am - 8:15 pmSTL-SFO
12h 50m2 stops
5:20 am - 4:55 pmSFO-STL
9h 35m2 stops
$468Southwest
Find Deal
Sat, Jan 25 - Mon, Jan 27
2:49 pm - 9:12 pmSTL-SFO
8h 23m1 stop
2:07 pm - 1:53 pmSFO-STL
21h 46m2 stops
$521Alaska Airlines
Find Deal
Fri, Jan 24 - Mon, Jan 27
11:41 am - 8:56 amSTL-SFO
23h 15m2 stops
11:20 am - 1:53 pmSFO-STL
24h 33m1 stop
$783Alaska Airlines
Find Deal
Sat, Jan 25 - Sun, Jan 26
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
$227United Airlines
Find Deal
Tue, Feb 18 - Tue, Feb 25
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
$260United Airlines
Find Deal
Thu, Feb 20 - Mon, Feb 24
1:40 pm - 4:00 pmSTL-SFO
4h 20mnonstop
10:40 am - 4:25 pmSFO-STL
3h 45mnonstop
$262Southwest
Find Deal
Wed, Apr 30 - Tue, May 6
10:25 am - 12:55 pmSTL-SFO
4h 30mnonstop
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
$272Southwest
Find Deal
Tue, Feb 18 - Tue, Feb 25
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
$281United Airlines
Find Deal
Fri, Feb 28 - Sun, Mar 2
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
10:05 am - 3:55 pmSFO-STL
3h 50mnonstop
$282Southwest
Find Deal
Wed, Feb 19 - Wed, Feb 26
9:00 am - 11:38 amSTL-SFO
4h 38mnonstop
1:10 pm - 6:56 pmSFO-STL
3h 46mnonstop
$297United Airlines
Find Deal
Tue, Feb 18 - Tue, Feb 25
3:10 pm - 5:40 pmSTL-SFO
4h 30mnonstop
6:05 am - 11:55 amSFO-STL
3h 50mnonstop
$307Southwest
Find Deal
Wed, Mar 5 - Sun, Mar 9
4:50 pm - 7:10 pmSTL-SFO
4h 20mnonstop
6:10 am - 11:55 amSFO-STL
3h 45mnonstop
$313Southwest
Find Deal
Fri, Apr 18 - Sun, Apr 20
5:54 pm - 8:22 pmSTL-SFO
4h 28mnonstop
10:45 am - 4:52 pmSFO-STL
4h 07mnonstop
$317United Airlines
Find Deal
Tue, Apr 8 - Tue, Apr 29

American Airlines flights from St. Louis to San Francisco

Our best American Airlines deals on St. Louis to San Francisco flight tickets
American Airlines
Feb 19
STL5:45 amLambert-St Louis
7h 44m
1 stop
SFO11:29 amSan Francisco
Feb 25
SFO12:32 amSan Francisco
8h 26m
1 stop
STL10:58 amLambert-St Louis
American Airlines
Feb 18
STL5:45 amLambert-St Louis
11h 34m
1 stop
SFO3:19 pmSan Francisco
Feb 24
SFO12:32 amSan Francisco
8h 26m
1 stop
STL10:58 amLambert-St Louis
American Airlines
Feb 17
STL11:25 amLambert-St Louis
9h 52m
1 stop
SFO7:17 pmSan Francisco
Feb 24
SFO1:42 pmSan Francisco
8h 14m
1 stop
STL11:56 pmLambert-St Louis

Frontier flights from St. Louis to San Francisco

Our best Frontier deals on St. Louis to San Francisco flight tickets
Frontier
Mar 3
STL11:08 pmLambert-St Louis
12h 34m
1 stop
SFO9:42 amSan Francisco
Mar 11
SFO7:26 pmSan Francisco
11h 50m
1 stop
STL9:16 amLambert-St Louis
Frontier
Mar 3
STL11:08 pmLambert-St Louis
12h 34m
1 stop
SFO9:42 amSan Francisco
Mar 11
SFO7:26 pmSan Francisco
11h 50m
1 stop
STL9:16 amLambert-St Louis
Frontier
Apr 30
STL6:51 pmLambert-St Louis
7h 42m
1 stop
SFO12:33 amSan Francisco
May 6
SFO6:00 amSan Francisco
25h 09m
1 stop
STL9:09 amLambert-St Louis

See travel insights to San Francisco from

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

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?

If you aren’t able to travel to San Francisco during the month of April, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $318.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from St. Louis to San Francisco is on a Friday when prices can be found for as low as $519. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $1,022.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest St. Louis to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $213. Flights in the morning are often more expensive with an average ticket price of $397.

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

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

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from St. Louis when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $356 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from St. Louis for as low as $321 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of January 2025, prices for St. Louis to San Francisco flights are approximately 51% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to San Francisco

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

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

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

Best Price Found

$55

Fastest flight time

4h 16m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from St. Louis in the past 72 hours is $55. The best round-trip flight deal from St. Louis to San Francisco found on momondo in the last 72 hours is $110.
The fastest flight from St. Louis to San Francisco takes 4h 16m
Direct flights go from St. Louis to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)

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

    There are 1739.7 mi between Lambert-St Louis and San Francisco. In terms of flight time, this usually takes a little over 4h 16m.

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

    Prices for flights from Lambert-St Louis Airport to San Francisco Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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


Best airlines flying from St. Louis to San Francisco

Compare and see reviews for airlines that fly from St. Louis to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $119Free CancellationRating
6.0
3,443 reviews
Search Frontier flights
United AirlinesPriceFrom $233Free CancellationRating
7.4
8,984 reviews
Search United Airlines flights
American AirlinesPriceFrom $246Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $256Free CancellationRating
8.0
8,521 reviews
Search Delta flights
SouthwestPriceFrom $291Free CancellationRating
8.1
4,662 reviews
Search Southwest flights
  • Southwest Flights From St. Louis to San Francisco

    Southwest is one of the most popular airlines flying from St. Louis to San Francisco, operating 7 flights/week on average for this route. A good Southwest flight deal for St. Louis to San Francisco starts from $291 round-trip, up to an average price of $395. Our users have rated Southwest at 8.1/10.

  • United Airlines Flights From St. Louis to San Francisco

    Another popular option for St. Louis to San Francisco flights is United Airlines (7.4/10, 8,984 ratings). United Airlines flies from St. Louis to San Francisco around 6 times per week, with deals starting from $233 round-trip and rising to an average price of around $400.


Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Hayward
Modesto
South San Francisco
Calistoga
Fremont
Daly City
Santa Clara
Roseville
Sonoma
Berkeley
Bodega Bay
Sunnyvale
Redwood City
Vallejo
Burlingame
Palo Alto
Milpitas
Fairfield

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from St. Louis.

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

Yes. All flights to San Francisco from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San Francisco.

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

Yes. momondo can track prices for St. Louis to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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