HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$131+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 April or August, 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

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$265
(Sun Country Air)

One-way from

$133
(Sun Country Air)

Popular in

June

Cheapest in

April

Average price

$418

Good round-trip deal

$497 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. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 25, 2025.

This Sun Country Air deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/235:00 pmSTL - SFO
1 stop7h 58mSun Country Air
Fri 5/3011:59 pmSFO - STL
1 stop12h 55mSun Country Air
Deal found 3/24$265
This Gotogate deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/235:00 pmSTL - SFO
1 stop7h 58mMultiple Airlines
Sun 5/255:45 amSFO - STL
1 stop5h 55mMultiple Airlines
Deal found 3/24$287
This American Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:00 amSTL - SFO
1 stop10h 19mAmerican Airlines
Tue 6/32:17 pmSFO - STL
1 stop6h 28mAmerican Airlines
Deal found 3/23$291
This Frontier deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/116:51 pmSTL - SFO
1 stop7h 53mFrontier
Fri 4/186:51 pmSFO - STL
1 stop12h 15mFrontier
Deal found 3/24$297
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/177:10 amSTL - SFO
1 stop10h 33mDelta
Sun 4/207:10 amSFO - STL
1 stop7h 16mDelta
Deal found 3/23$307
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/175:54 pmSTL - SFO
Nonstop4h 28mUnited Airlines
Sun 4/206:42 amSFO - STL
1 stop7h 54mUnited Airlines
Deal found 3/23$315
This Southwest deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/221:40 pmSTL - SFO
Nonstop4h 20mSouthwest
Tue 5/65:15 amSFO - STL
1 stop6h 20mSouthwest
Deal found 3/23$335
This Alaska Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:30 amSTL - SFO
1 stop9h 02mAlaska Airlines
Wed 5/148:42 amSFO - STL
2 stops13h 17mAlaska Airlines
Deal found 3/23$345

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to San Francisco 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, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
Use the filters below to find and compare flights from St. Louis to San Francisco that are best for you.

Fly from

St. Louis

Fly to

San Francisco

Route

Depart

Return

Price

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 5/23

5:00 pm-10:58 pm

1 stop7h 58m

San Francisco

Fri 5/30

11:59 pm-2:54 pm

1 stop12h 55m

$265

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 5/23

5:00 pm-10:58 pm

1 stop7h 58m

San Francisco

Sun 5/25

5:45 am-1:40 pm

1 stop5h 55m

$287

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 5/29

5:00 am-1:19 pm

1 stop10h 19m

San Francisco

Mon 6/2

12:24 am-9:54 am

1 stop7h 30m

$291

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 4/11

6:51 pm-12:44 am

1 stop7h 53m

San Francisco

Fri 4/18

6:51 pm-9:06 am

1 stop12h 15m

$297

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 4/17

7:10 am-3:43 pm

1 stop10h 33m

San Francisco

Sun 4/20

7:10 am-4:26 pm

1 stop7h 16m

$307

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Thu 4/17

5:54 pm-8:22 pm

Nonstop4h 28m

San Francisco

Sun 4/20

6:42 am-4:36 pm

1 stop7h 54m

$315

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Tue 4/22

1:40 pm-4:00 pm

Nonstop4h 20m

San Francisco

Tue 5/6

5:15 am-1:35 pm

1 stop6h 20m

$335

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 5/7

6:30 am-1:32 pm

1 stop9h 02m

San Francisco

Wed 5/14

8:42 am-11:59 pm

2 stops13h 17m

$345

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 3/29

7:03 pm-12:43 am

1 stop7h 40m

$131

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Fri 5/23

5:00 pm-10:58 pm

1 stop7h 58m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 16 results
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust 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?

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 March 21, 2025.

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 $398). 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?

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 March 25, 2025.

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?

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 16, 2025.

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.

Weekly flight availability from St. Louis to San Francisco

Explore weekly flight availability from St. Louis to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 25, 2025.

The most flights from STL to SFO are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in San Francisco by month

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

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

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated March 25, 2025.
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
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

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?

    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 4 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 9 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, Sun Country Air ($265), American Airlines ($291), and United Airlines ($297) offers the cheapest pricing from St. Louis to San Francisco. Sun Country Air is currently priced 25% 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 Sun Country Air, with whom users have recently found tickets for as low as $133. However, be on the lookout for offers from United Airlines 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 (87%), Air New Zealand (87%) and United Airlines (83%).

  • 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 $2,359, our data indicates the cheapest price to be $134. The most popular route (Lambert-St Louis - San Francisco), is priced around $287.

  • 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 $398). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Roseville
Mountain View
Santa Cruz
Turlock
Fairfield
South San Francisco
Manteca
Sausalito
Richmond
Watsonville
Hollister
Milpitas
Antioch
Hayward
Vallejo
Newark
Alameda
Campbell
Daly City
Pacific Grove

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.
St. Louis to Las Vegas flights
Kansas City to Las Vegas flights
Kansas City to Los Angeles flights
Kansas City to San Francisco flights
Kansas City to San Diego flights
St. Louis to Los Angeles flights
St. Louis to San Diego flights
Kansas City to Ontario flights
Kansas City to Santa Ana flights
St. Louis to Ontario flights
St. Louis to San Jose flights
Kansas City to Burbank flights
St. Louis to Burbank flights
Kansas City to Reno flights
Kansas City to Oakland flights
Kansas City to Sacramento flights
St. Louis to Sacramento flights
Springfield to Las Vegas flights
St. Louis to Reno flights
Springfield to San Diego flights
Springfield to Ontario flights
Kansas City to Fresno flights
Kansas City to San Jose flights
Kansas City to Long Beach flights
St. Louis to Long Beach flights
St. Louis to Santa Ana flights
Springfield to Fresno flights
Springfield to Los Angeles flights
Springfield to Sacramento flights
St. Louis to Palm Springs flights
Springfield to Santa Ana flights
Springfield to Reno flights
Kansas City to Palm Springs flights
Springfield to San Francisco flights
St. Louis to Fresno flights
Kansas City to Bakersfield flights
St. Louis to Oakland flights
Kansas City to San Luis Obispo flights
Kansas City to Santa Barbara flights
St. Louis to San Luis Obispo flights
Kansas City to Monterey flights
St. Louis to Arcata flights
Joplin to Las Vegas flights
St. Louis to Medford flights
Springfield to San Jose flights
Springfield to Medford flights
Springfield to Palm Springs flights
St. Louis to Santa Barbara flights
St. Louis to Santa Rosa flights

Top 5 airlines flying from St. Louis to San Francisco

Discover the top 5 airlines that operate flights from St. Louis to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$191FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$234Average$397FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$238Average$353FlexibilityNo cancel feeOn-time71%
DeltaCheapest$247Average$354FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$298Average$416FlexibilityNo cancel feeOn-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.