SFO - STL

$91 Find Cheap Flights from San Francisco to St. Louis - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to St. Louis departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$397
Typical prices: $350-$598
Alaska Airlines, Frontier
Fri 8/14Tue 8/18
SFO - STL • 1 stop
Cheapest non-stop
$398
Typical prices: $427-$576
United Airlines
Wed 8/12Mon 8/17
SFO - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to six inches more legroom on this route.
Southwest Cash + Points and Rapid Rewards add flexible booking value.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Southwest and United Airlines. Average duration is 3h 55m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $236 (round-trip)
Shortest trip • 5h 40m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
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We hope you love your trip to St. Louis!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from San Francisco to St. Louis (SFO-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Fri, Aug 14 - Tue, Aug 18
Multiple Airlines Logo
7:20 am - 4:37 pm
SFO
-
STL
7h 17m
1 stop
Multiple Airlines Logo
5:27 pm - 10:54 pm
STL
-
SFO
7h 27m
1 stop
$397Multiple Airlines
Wed, Aug 12 - Mon, Aug 17
United Airlines Logo
12:40 pm - 6:39 pm
SFO
-
STL
3h 59mnonstop
United Airlines Logo
8:42 am - 11:04 am
STL
-
SFO
4h 22mnonstop
$398United Airlines
Thu, Sep 3 - Mon, Sep 7
Frontier Logo
11:00 am - 5:50 pm
SFO
-
STL
28h 50m
1 stop
Frontier Logo
7:58 pm - 11:34 am
STL
-
SFO
17h 36m
1 stop
$399Frontier
Thu, Jul 23 - Sun, Jul 26
Frontier Logo
3:43 pm - 6:15 pm
SFO
-
STL
24h 32m
1 stop
Frontier Logo
8:08 pm - 8:54 pm
STL
-
SFO
26h 46m
1 stop
$400Frontier
Fri, Jul 31 - Mon, Aug 3
Frontier Logo
7:08 pm - 8:57 am
SFO
-
STL
11h 49m
2 stops
Frontier Logo
7:10 pm - 3:25 pm
STL
-
SFO
22h 15m
1 stop
$401Frontier
Fri, Aug 14 - Tue, Aug 18
Multiple Airlines Logo
7:20 am - 4:37 pm
SFO
-
STL
7h 17m
1 stop
Multiple Airlines Logo
8:00 am - 7:56 pm
STL
-
SFO
13h 56m
1 stop
$403Multiple Airlines
Wed, Aug 12 - Mon, Aug 17
United Airlines Logo
5:00 am - 12:40 pm
SFO
-
STL
5h 40m
1 stop
United Airlines Logo
8:42 am - 11:04 am
STL
-
SFO
4h 22mnonstop
$404United Airlines
Fri, Aug 14 - Wed, Aug 19
Delta Logo
6:28 pm - 10:23 am
SFO
-
STL
13h 55m
1 stop
Delta Logo
5:23 pm - 11:58 pm
STL
-
SFO
8h 35m
1 stop
$406Delta
Fri, Sep 4 - Mon, Sep 7
Frontier Logo
6:00 am - 7:13 pm
SFO
-
STL
11h 13m
1 stop
Frontier Logo
6:45 pm - 10:25 am
STL
-
SFO
17h 40m
1 stop
$407Frontier
Mon, Aug 3 - Wed, Aug 5
United Airlines Logo
12:12 pm - 6:17 pm
SFO
-
STL
4h 05mnonstop
United Airlines Logo
7:23 pm - 9:43 pm
STL
-
SFO
4h 20mnonstop
$408United Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to St. Louis flights

Get data-powered insights and trends into flights from San Francisco to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to St. Louis departing in August.

What’s the cheapest day of the week to fly from San Francisco to St. Louis?

The average price of all round-trip flights from San Francisco to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from San Francisco to St. Louis, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to St. Louis is September, where tickets cost $415 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $623 and $615 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to St. Louis, you should book around 4 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Expert advice

Expert advice for your flight from San Francisco to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest and SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Good to know

Low seasonJanuary
Cheapest flight$91
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from San Francisco to St. Louis

When to book flights from San Francisco to St. Louis

Are your dates flexible? Find out the best times to travel from San Francisco to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to St. Louis

  • What is the preferred means of transport to the city center from STL airport?

    The bus ride from Lambert-St. Louis International Airport (STL) to the Central Business District of St. Louis takes around 30min and costs about $9 to $14 one way.

  • Can I rent a car at STL airport?

    Car rental agencies Alamo, Avis, and Budget are all present at the St. Louis Lambert International Airport for your convenience. The automobile rental firms provide a complimentary shuttle service that runs around the clock and goes directly to the off-airport facilities where customers are expected to return their cars.

  • Is there a hotel at SFO airport?

    Take pleasure in opulent suites with floor-to-ceiling windows that frame breathtaking views of the airport and the bay. The Grand Hyatt at SFO is a premium hotel located very next to San Francisco International Airport. The hotel, which is situated in a convenient location near the entrance to SFO, can be reached quickly and simply from all terminals by either the road or the AirTrain.

  • Where can I park at SFO airport?

    There are five lots for on-site parking at San Francisco International Airport. They are the Domestic Garage, International Garage G, International Garage A, Long Term Surface, and Long Term Garage. Valet parking is available at the airport, providing an additional 150 parking spots. There are plenty of parking lots at the airport, but they fill up quickly.

  • What is the cheapest flight from San Francisco to St. Louis?

    In the last 5 days, the lowest price for a flight from San Francisco to St. Louis was $91 for a one-way ticket and $397 for a round-trip.

  • Do I need a passport to fly between San Francisco and St. Louis?

    No

  • Which airports will I be using when flying from San Francisco to St. Louis?

    San Francisco and St. Louis are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to St. Louis?

    JetBlue, Delta, Hawaiian Airlines, Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the San Francisco to St. Louis flight route.

  • Which aircraft models fly most regularly from San Francisco to St. Louis?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San Francisco to St. Louis flight route.

  • Which airline alliances offer flights from San Francisco to St. Louis?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Francisco and St. Louis, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from San Francisco to St. Louis?

    There are nonstop flights from San Francisco to St. Louis on a daily basis.

  • Which is the best airline for flights from San Francisco to St. Louis, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from San Francisco to St. Louis are Southwest and Delta. With an average price for the route of $565 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $416 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from San Francisco to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $248 or less one-way and $462 or less round-trip.
  • You may enter lounges at San Francisco International Airport (SFO) if you have just landed there and want to take some time to unwind. If you want to make the most of your departure or stopover at SFO, visit the American Express Centurion Lounge, which is an airport lounge that serves some of the finest cuisine, wine, and other beverages available. You are going to really like everything, including the free Wi-Fi, the local cuisine, the wine tasting, and the assortment of cocktails.
  • Moms who are traveling via SFO have access to 19 breastfeeding facilities, including 13 nursing rooms that are elegant, large, and private. At the airport, there are private rooms available for women who are breastfeeding or pumping their milk. Before and after passing through security, passengers are welcome to utilize the nursing rooms located in Terminals 1, 2, and 3 located around the airport.
  • There are a few designated areas in each terminal at San Francisco International Airport where pets may relieve themselves. Customers may utilize the services at either Terminal 1 or Terminal 3 after they have cleared security. Pre-security screenings are performed outside the terminal on the Arrivals Level curbside; simply follow the painted paw-prints. That is to say, these inspections take place away from the terminal building.
  • There is often activity even throughout the night at the St. Louis airport (STL) since it serves a large number of domestic as well as some foreign destinations with its airline operations. Layover travelers are required to stay in the public area until the security checkpoint shuts for the night, despite the fact that the terminals are open around the clock.
  • Helpful services are available at both STL and SFO to accommodate travelers who may need guidance while moving around the airport or using any of its numerous amenities. If you have any concerns regarding their wheelchair rental services or airport transportation alternatives, you may reach out to them before, during, or after your trip. Notify the airline in advance if you want to use these services.

Prefer to fly direct from San Francisco to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Francisco to Lambert-St Louis.
Find which airlines fly direct from San Francisco Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

San Francisco to Lambert-St Louis

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

Direct returns

Lambert-St Louis to San Francisco

Monday

Southwest,United Airlines

Southwest,United Airlines

Tuesday

Southwest,United Airlines

Southwest,United Airlines

Wednesday

Southwest,United Airlines

Southwest,United Airlines

Thursday

Southwest,United Airlines

Southwest,United Airlines

Friday

Southwest,United Airlines

Southwest,United Airlines

Saturday

Southwest,United Airlines

Southwest,United Airlines

Sunday

Southwest,United Airlines

Southwest,United Airlines

See more direct flights

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

Information on your arrival and departure airports