How popular is this St. Louis to San Francisco flight route?

This flight path from Lambert-St Louis to San Francisco was viewed by 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from St. Louis to San Francisco round-trip?

According to our current data, Frontier ($188), Sun Country Air ($265), and American Airlines ($311) offers the cheapest pricing from St. Louis to San Francisco. Frontier is currently priced 47% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from St. Louis to San Francisco one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $125. However, be on the lookout for offers from Sun Country Air and American Airlines, as they are both options that can get you from St. Louis to San Francisco for a low price.

What are the cheapest flights from St. Louis to San Francisco?

Looking for the cheapest flight from St. Louis to San Francisco? While on average our users pay $1,275, our data indicates the cheapest price to be $106. The most popular route (Lambert-St Louis - San Francisco), is priced around $190.

What are the most reliable airlines from St. Louis to San Francisco?

The top 3 most reliable airlines when flying from St. Louis to San Francisco are Asiana Airlines (83%), Southwest (74%) and United Airlines (55%).

What are the most popular airlines that fly from St. Louis to San Francisco?

When booking a flight from St. Louis to San Francisco, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

What is the cheapest day to fly round-trip from St. Louis to San Francisco?

Users have found that flying from St. Louis to San Francisco on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save up to 134% on this flight, we recommend booking at least 43 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to San Francisco from $215 1-2 weeks out and tickets from $359 for flights departing within the next 72 hours.

What is the cheapest month to fly from St. Louis to San Francisco?

August can be a great time to fly to San Francisco from St. Louis with a flight ticket averaging about $360. Cheapflights users have found deals in the month of August for as cheap as $144. The most expensive prices can be found in the month of June.

Most accurate provider : When it comes to deals on St. Louis-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from St. Louis to San Francisco?

If you wish to fly to San Francisco from St. Louis, then you need to book flights from Lambert-St Louis to San Francisco. There are 3 flights from Lambert-St Louis (STL) to San Francisco (SFO) per day to choose from. Flights to San Francisco from Lambert-St Louis are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 4h 10m is how long a nonstop flight from St. Louis to San Francisco typically takes.

Can I find deals for flights from St. Louis to San Francisco that include hotel bookings?

Yes. In addition to deals on St. Louis to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Francisco.

Can I find deals for business class flights from St. Louis to San Francisco?

Yes. Cheapflights offers flight deals from St. Louis to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$125+ Flights from St. Louis to San Francisco

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to San Francisco are usually found in August or April, booked 42 days in advance, depart on a Thursday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to San Francisco

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$188 (Frontier)
One-way from	$125 (Frontier)
Popular in	June
Cheapest in	August
Average price	$316
Good round-trip deal	$463 or less
Good one-way deal	$183 or less

Provider with most accurate pricing for Lambert-St Louis-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-San Francisco flights.

Search Deals

From Lambert-St Louis to San Francisco

Search Deals

One-way flight from Lambert-St Louis to San Francisco

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to San Francisco.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to San Francisco.

Search Deals

Find flight deals from St. Louis to San Francisco

Cheapest flights from St. Louis to San Francisco
Explore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Wed 4/306:58 pmSTL - SFO

1 stop7h 35mFrontier

Mon 5/511:02 amSFO - STL

1 stop8h 03mFrontier

Deal found 4/10

$188

Mon 5/195:45 pmSTL - SFO

1 stop21h 30mMultiple Airlines

Fri 5/3011:59 pmSFO - STL

1 stop12h 55mMultiple Airlines

Deal found 4/10

$249

Fri 5/233:30 pmSTL - SFO

1 stop27h 43mSun Country Air

Fri 6/611:59 pmSFO - STL

1 stop9h 26mSun Country Air

Deal found 4/10

$265

Wed 6/45:00 amSTL - SFO

1 stop10h 19mAmerican Airlines

Sat 6/143:23 pmSFO - STL

1 stop6h 36mAmerican Airlines

Deal found 4/10

$311

Sat 5/107:00 amSTL - SFO

Nonstop4h 30mUnited Airlines

Sat 5/1711:00 amSFO - STL

Nonstop4h 07mUnited Airlines

Deal found 4/10

$319

Wed 6/116:30 amSTL - SFO

1 stop6h 29mDelta

Tue 6/179:35 pmSFO - STL

1 stop8h 48mDelta

Deal found 4/11

$339

Tue 4/296:30 amSTL - SFO

2 stops12h 05mAlaska Airlines

Thu 5/17:00 amSFO - STL

1 stop14h 59mAlaska Airlines

Deal found 4/10

$346

Fri 5/24:50 pmSTL - SFO

Nonstop4h 20mSouthwest

Sun 5/46:10 amSFO - STL

Nonstop3h 45mSouthwest

Deal found 4/10

$366

Best flights from St. Louis to San Francisco
Discover carefully curated flight deals from St. Louis to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2025.

Wed 4/306:58 pmSTL - SFO

1 stop7h 35mFrontier

Mon 5/511:02 amSFO - STL

1 stop8h 03mFrontier

Deal found 4/10

$188

Mon 5/195:45 pmSTL - SFO

1 stop21h 30mMultiple Airlines

Fri 5/3011:59 pmSFO - STL

1 stop12h 55mMultiple Airlines

Deal found 4/10

$249

Fri 5/233:30 pmSTL - SFO

1 stop27h 43mSun Country Air

Fri 6/611:59 pmSFO - STL

1 stop9h 26mSun Country Air

Deal found 4/10

$265

Wed 6/45:00 amSTL - SFO

1 stop10h 19mAmerican Airlines

Sat 6/143:23 pmSFO - STL

1 stop6h 36mAmerican Airlines

Deal found 4/10

$311

Sat 5/107:00 amSTL - SFO

Nonstop4h 30mUnited Airlines

Sat 5/1711:00 amSFO - STL

Nonstop4h 07mUnited Airlines

Deal found 4/10

$319

Wed 6/116:30 amSTL - SFO

1 stop6h 29mDelta

Tue 6/179:35 pmSFO - STL

1 stop8h 48mDelta

Deal found 4/11

$339

Tue 4/296:30 amSTL - SFO

2 stops12h 05mAlaska Airlines

Thu 5/17:00 amSFO - STL

1 stop14h 59mAlaska Airlines

Deal found 4/10

$346

Fri 5/24:50 pmSTL - SFO

Nonstop4h 20mSouthwest

Sun 5/46:10 amSFO - STL

Nonstop3h 45mSouthwest

Deal found 4/10

$366

Last-minute flights from St. Louis to San Francisco
Discover last-minute flight deals from St. Louis to San Francisco. Data last updated April 11, 2025 and is based on user searches.

Thu 4/176:50 amSTL - SFO

1 stop9h 59mDelta

Sun 4/2012:47 amSFO - STL

1 stop7h 43mDelta

Deal found 4/10

$705

Sat 4/195:45 amSTL - SFO

1 stop11h 10mAmerican Airlines

Fri 4/2512:47 amSFO - STL

1 stop6h 14mAmerican Airlines

Deal found 4/10

$487

Sat 4/195:33 pmSTL - SFO

1 stop17h 47mUnited Airlines

Sat 4/266:50 pmSFO - STL

2 stops14h 13mUnited Airlines

Deal found 4/10

$570

Sat 4/192:40 pmSTL - SFO

Nonstop4h 20mSouthwest

Sat 4/267:20 amSFO - STL

Nonstop3h 45mSouthwest

Deal found 4/10

$617

Sun 4/203:11 pmSTL - SFO

2 stops19h 33mAlaska Airlines

Sat 4/262:30 pmSFO - STL

1 stop7h 29mAlaska Airlines

Deal found 4/10

$593

Mon 4/214:57 pmSTL - SFO

1 stop22h 22mFrontier

Wed 4/2310:07 pmSFO - STL

1 stop23h 57mFrontier

Deal found 4/10

$190

Mon 4/216:51 pmSTL - SFO

1 stop7h 53mMultiple Airlines

Wed 4/2312:05 pmSFO - STL

2 stops9h 54mMultiple Airlines

Deal found 4/10

$489

Tue 4/296:30 amSTL - SFO

2 stops12h 05mAlaska Airlines

Thu 5/17:00 amSFO - STL

1 stop14h 59mAlaska Airlines

Deal found 4/10

$346

Wed 4/306:58 pmSTL - SFO

1 stop7h 35mFrontier

Mon 5/511:02 amSFO - STL

1 stop8h 03mFrontier

Deal found 4/10

$188

Fri 5/24:50 pmSTL - SFO

Nonstop4h 20mSouthwest

Sun 5/46:10 amSFO - STL

Nonstop3h 45mSouthwest

Deal found 4/10

$366

Sat 5/107:00 amSTL - SFO

Nonstop4h 30mUnited Airlines

Sat 5/1711:00 amSFO - STL

Nonstop4h 07mUnited Airlines

Deal found 4/10

$319

Sat 5/105:00 pmSTL - SFO

1 stop7h 38mDelta

Fri 5/1612:40 amSFO - STL

1 stop8h 12mDelta

Deal found 4/11

$339

One-way flights from St. Louis to San Francisco
Search for one-way flight options from St. Louis to San Francisco. Find affordable one-way fares based on user searches. Data last updated April 11, 2025.

Sun 5/49:55 pmSTL - SFO

1 stop11h 49mFrontier

Deal found 4/9

$125

Mon 6/97:00 amSTL - SFO

1 stop12h 14mSun Country Air

Deal found 4/10

$133

Tue 6/35:00 amSTL - SFO

1 stop10h 19mAmerican Airlines

Deal found 4/10

$147

Wed 5/145:54 pmSTL - SFO

Nonstop4h 28mUnited Airlines

Deal found 4/10

$160

Sat 5/105:50 amSTL - SFO

2 stops10h 30mSouthwest

Deal found 4/10

$175

Wed 5/76:30 amSTL - SFO

2 stops12h 39mAlaska Airlines

Deal found 4/10

$182

Tue 7/226:30 amSTL - SFO

1 stop8h 42mDelta

Deal found 4/10

$193

Thu 5/1512:15 pmSTL - SFO

2 stops12h 34mMultiple Airlines

Deal found 4/10

$221

Fri 5/237:00 amSTL - SFO

1 stop8h 43mHawaiian Airlines

Deal found 4/10

$697

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 4/30

6:58 pm-12:33 am

1 stop7h 35m

San Francisco

Mon 5/5

11:02 am-9:05 pm

1 stop8h 03m

$188

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 5/19

5:45 pm-1:15 pm

1 stop21h 30m

San Francisco

Fri 5/30

11:59 pm-2:54 pm

1 stop12h 55m

$249

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 5/23

3:30 pm-5:13 pm

1 stop27h 43m

San Francisco

Fri 6/6

11:59 pm-11:25 am

1 stop9h 26m

$265

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 6/4

5:00 am-1:19 pm

1 stop10h 19m

San Francisco

Sat 6/14

3:23 pm-11:59 pm

1 stop6h 36m

$311

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 5/10

7:00 am-9:30 am

Nonstop4h 30m

San Francisco

Sat 5/17

11:00 am-5:07 pm

Nonstop4h 07m

$319

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 6/11

6:30 am-10:59 am

1 stop6h 29m

San Francisco

Tue 6/17

9:35 pm-8:23 am

1 stop8h 48m

$339

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 4/29

6:30 am-4:35 pm

2 stops12h 05m

San Francisco

Thu 5/1

7:00 am-11:59 pm

1 stop14h 59m

$346

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 5/2

4:50 pm-7:10 pm

Nonstop4h 20m

San Francisco

Sun 5/4

6:10 am-11:55 am

Nonstop3h 45m

$366

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sun 5/4

9:55 pm-7:44 am

1 stop11h 49m

$125

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Mon 6/9

7:00 am-5:14 pm

1 stop12h 14m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 17 results

Compare providers for flights from St. Louis to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San Francisco in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*3 stars
Flightnetwork	Price Accuracy-	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Francisco

How far ahead should I book a flight from St. Louis to San Francisco?

The best time to book flights from St. Louis to San Francisco is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to San Francisco?

Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco (average of $276). Flying from St. Louis to San Francisco in June is currently the most expensive (average of $393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to SFO?

It’s typically best to fly out from St. Louis to San Francisco at noon. Doing so could potentially save you 63% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from St. Louis to San Francisco?

Travelers seeking maximum savings on their St. Louis to San Francisco flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San Francisco by month

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to San Francisco. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,851 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,279 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,911 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Hawaiian Airlines

7.9

Good

2,365 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,636 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What airports do I use to fly from St. Louis to San Francisco?
If you wish to fly to San Francisco from St. Louis, then you need to book flights from Lambert-St Louis to San Francisco. There are 3 flights from Lambert-St Louis (STL) to San Francisco (SFO) per day to choose from. Flights to San Francisco from Lambert-St Louis are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 4h 10m is how long a nonstop flight from St. Louis to San Francisco typically takes.
How popular is this St. Louis to San Francisco flight route?
This flight path from Lambert-St Louis to San Francisco was viewed by 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from St. Louis to San Francisco round-trip?
According to our current data, Frontier ($188), Sun Country Air ($265), and American Airlines ($311) offers the cheapest pricing from St. Louis to San Francisco. Frontier is currently priced 47% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from St. Louis to San Francisco one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $125. However, be on the lookout for offers from Sun Country Air and American Airlines, as they are both options that can get you from St. Louis to San Francisco for a low price.
What are the most reliable airlines from St. Louis to San Francisco?
The top 3 most reliable airlines when flying from St. Louis to San Francisco are Asiana Airlines (83%), Southwest (74%) and United Airlines (55%).
What are the cheapest flights from St. Louis to San Francisco?
Looking for the cheapest flight from St. Louis to San Francisco? While on average our users pay $1,275, our data indicates the cheapest price to be $106. The most popular route (Lambert-St Louis - San Francisco), is priced around $190.
Can I find deals for flights from St. Louis to San Francisco that include hotel bookings?
Yes. In addition to deals on St. Louis to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Francisco.
Can I find deals for business class flights from St. Louis to San Francisco?
Yes. Cheapflights offers flight deals from St. Louis to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to San Francisco?
Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco (average of $276). Flying from St. Louis to San Francisco in June is currently the most expensive (average of $393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Roseville

Mountain View

Santa Cruz

Turlock

South San Francisco

Fairfield

Manteca

Sausalito

Richmond

Watsonville

Hollister

Milpitas

Antioch

Hayward

Vallejo

Newark

Alameda

Sunnyvale

Campbell

Daly City

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from St. Louis to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$118	Average$186	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$235	Average$353	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$236	Average$346	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$241	Average$397	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$302	Average$416	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$125+ Cheap flights from St. Louis to San Francisco (STL - SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to San Francisco are usually found in August or April, booked 42 days in advance, depart on a Thursday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from St. Louis to San Francisco

Cheapest flights from St. Louis to San FranciscoExplore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Explore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Francisco that are best for you.

Compare providers for flights from St. Louis to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San Francisco in April.

Best time to book a flight from St. Louis to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Francisco

How far ahead should I book a flight from St. Louis to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San Francisco. Price data was last updated on April 4, 2025.

What is the cheapest month to book a flight from St. Louis to San Francisco?

What is the cheapest time of day to fly from STL to SFO?

Find hourly flight availability from St. Louis to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

What is the cheapest day to fly from St. Louis to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to San Francisco. Price data was last updated on March 30, 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to San Francisco. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to San Francisco?

How popular is this St. Louis to San Francisco flight route?

What are the cheapest airlines flying from St. Louis to San Francisco round-trip?

What are the cheapest airlines to fly from St. Louis to San Francisco one-way?

What are the most reliable airlines from St. Louis to San Francisco?

What are the cheapest flights from St. Louis to San Francisco?

Can I find deals for flights from St. Louis to San Francisco that include hotel bookings?

How can I find direct flights from St. Louis to San Francisco?

Can I find deals for business class flights from St. Louis to San Francisco?

What is the cheapest month to book a flight from St. Louis to San Francisco?

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to San Francisco

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from St. Louis to San Francisco
Explore the most affordable flight options available from St. Louis to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.