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Cheap flights from St. Louis to San Francisco from $85

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 6/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to San Francisco

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to San Francisco.
Frontier Logo
8:15 pm - 12:31 amSTL-SFO
6h 16m1 stop
Frontier Logo
9:59 pm - 12:06 amSFO-STL
24h 07m1 stop
$181Frontier
Find Deal
Sat, May 3 - Tue, May 6
Frontier Logo
5:45 pm - 1:15 pmSTL-SFO
21h 30m1 stop
Frontier Logo
6:39 pm - 1:40 pmSFO-STL
17h 01m1 stop
$188Frontier
Find Deal
Thu, May 15 - Sat, May 24
American Airlines Logo
5:00 am - 1:19 pmSTL-SFO
10h 19m1 stop
American Airlines Logo
12:59 am - 9:18 amSFO-STL
6h 19m1 stop
$331American Airlines
Find Deal
Tue, Jun 3 - Sun, Jun 8
Delta Logo
10:48 am - 6:47 pmSTL-SFO
9h 59m1 stop
Delta Logo
12:49 am - 8:39 amSFO-STL
5h 50m1 stop
$339Delta
Find Deal
Wed, Jun 11 - Mon, Jun 16
Southwest Logo
1:35 pm - 3:45 pmSTL-SFO
4h 10mnonstop
Southwest Logo
10:45 pm - 9:00 amSFO-STL
8h 15m1 stop
$354Southwest
Find Deal
Thu, Jul 3 - Mon, Jul 7
Delta Logo
7:19 pm - 12:21 amSTL-SFO
7h 02m1 stop
Delta Logo
12:49 am - 8:39 amSFO-STL
5h 50m1 stop
$359Delta
Find Deal
Fri, Jun 6 - Thu, Jun 12
American Airlines Logo
5:00 am - 10:36 amSTL-SFO
7h 36m1 stop
American Airlines Logo
12:24 am - 8:59 amSFO-STL
6h 35m1 stop
$363American Airlines
Find Deal
Thu, May 15 - Fri, May 23
United Airlines Logo
7:00 am - 9:30 amSTL-SFO
4h 30mnonstop
United Airlines Logo
11:55 am - 6:00 pmSFO-STL
4h 05mnonstop
$365United Airlines
Find Deal
Tue, May 20 - Tue, May 27
Southwest Logo
6:40 pm - 11:25 pmSTL-SFO
6h 45m1 stop
Southwest Logo
7:20 am - 1:05 pmSFO-STL
3h 45mnonstop
$370Southwest
Find Deal
Thu, May 15 - Sat, May 24
United Airlines Logo
6:10 am - 8:26 amSTL-SFO
4h 16mnonstop
United Airlines Logo
10:56 pm - 4:54 amSFO-STL
3h 58mnonstop
$371United Airlines
Find Deal
Tue, Jun 24 - Thu, Jun 26

Frontier flights from St. Louis to San Francisco

Our best Frontier deals on St. Louis to San Francisco flight tickets
Frontier
May 3
STL8:15 pmLambert-St Louis
6h 16m
1 stop
SFO12:31 amSan Francisco
May 6
SFO9:59 pmSan Francisco
24h 07m
1 stop
STL12:06 amLambert-St Louis
Frontier
May 15
STL5:45 pmLambert-St Louis
21h 30m
1 stop
SFO1:15 pmSan Francisco
May 24
SFO6:39 pmSan Francisco
17h 01m
1 stop
STL1:40 pmLambert-St Louis
Frontier
May 9
STL9:55 pmLambert-St Louis
17h 08m
1 stop
SFO1:03 pmSan Francisco
May 14
SFO9:59 pmSan Francisco
24h 07m
1 stop
STL12:06 amLambert-St Louis

American Airlines flights from St. Louis to San Francisco

Our best American Airlines deals on St. Louis to San Francisco flight tickets
American Airlines
Jun 3
STL5:00 amLambert-St Louis
10h 19m
1 stop
SFO1:19 pmSan Francisco
Jun 8
SFO12:59 amSan Francisco
6h 19m
1 stop
STL9:18 amLambert-St Louis
American Airlines
May 15
STL5:00 amLambert-St Louis
7h 36m
1 stop
SFO10:36 amSan Francisco
May 23
SFO12:24 amSan Francisco
6h 35m
1 stop
STL8:59 amLambert-St Louis
American Airlines
Jun 7
STL8:30 amLambert-St Louis
6h 36m
1 stop
SFO1:06 pmSan Francisco
Jun 13
SFO12:59 amSan Francisco
6h 03m
1 stop
STL9:02 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 August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $324.

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 Thursday when prices can be found for as low as $522. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $1,050.

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 at noon. Our users have found flights to San Francisco at noon for as low as $450. Flights in the evening are often more expensive with an average ticket price of $1,185.

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 11 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $361 when searching 11 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 $310 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 April 2025, prices for St. Louis to San Francisco flights are approximately 26% more expensive 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

$85

Fastest flight time

4h 10m

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 $85. The best round-trip flight deal from St. Louis to San Francisco found on momondo in the last 72 hours is $181.
The fastest flight from St. Louis to San Francisco takes 4h 10m
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 10m.

  • 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 $118Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
American AirlinesPriceFrom $229Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $241Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
DeltaPriceFrom $246Free CancellationRating
8.0
7,920 reviews
Search Delta flights
SouthwestPriceFrom $307Free CancellationRating
8.0
4,287 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 8 flights/week on average for this route. A good Southwest flight deal for St. Louis to San Francisco starts from $307 round-trip, up to an average price of $420. Our users have rated Southwest at 8.0/10.

  • 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, 8,685 ratings). United Airlines flies from St. Louis to San Francisco around 5 times per week, with deals starting from $241 round-trip and rising to an average price of around $399.


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
Calistoga
Sonoma
Roseville
Bodega Bay
Daly City
Santa Clara
Fremont
South San Francisco
Big Sur
Sunnyvale
Redwood City
Berkeley
Walnut Creek
Vallejo
Palo Alto
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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