SFO - STL

$178 Find Cheap Flights from San Francisco to St. Louis - Compare and Save

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Everything you should know

Cheapest round-trip
$353
Typical prices: $441-$683
Frontier
Mon 9/24Thu 9/27
SFO - STL • 1 stop
Cheapest non-stop
$411
Typical prices: $485-$735
United Airlines
Mon 9/24Mon 10/1
SFO - STL • Non-stop
Nonstop flights
You can fly direct with United Airlines and Southwest. Average duration is 3h 52m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 10 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $236 (round-trip)
Shortest trip • 5h 55m (one-way)
Insights
Insights
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Thu, Sep 24 - Sun, Sep 27
Frontier Logo
8:24 pm - 11:17 amSFO  San Francisco-STL Lambert-St Louis
12h 53m1 stop Las Vegas Harry Reid Intl
Frontier Logo
12:27 pm - 1:19 pmSTL  Lambert-St Louis-SFO San Francisco
26h 52m1 stop Las Vegas Harry Reid Intl
$353Frontier
Mon, Sep 14 - Mon, Sep 28
Frontier Logo
11:42 am - 7:17 pmSFO  San Francisco-STL Lambert-St Louis
5h 35m1 stop Denver Intl
Frontier Logo
12:17 pm - 5:17 pmSTL  Lambert-St Louis-SFO San Francisco
7h 00m1 stop Las Vegas Harry Reid Intl
$354Frontier
Wed, Nov 4 - Mon, Nov 9
Delta Logo
11:30 pm - 10:51 amSFO  San Francisco-STL Lambert-St Louis
9h 21m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:28 pm - 8:17 pmSTL  Lambert-St Louis-SFO San Francisco
9h 49m2 stops Minneapolis St Paul Seattle/Tacoma Intl
$362Delta
Tue, Nov 3 - Tue, Nov 10
American Airlines Logo
6:01 am - 6:17 pmSFO  San Francisco-STL Lambert-St Louis
10h 16m1 stop Chicago O'Hare Intl
American Airlines Logo
1:20 pm - 9:56 pmSTL  Lambert-St Louis-SFO San Francisco
10h 36m1 stop Chicago O'Hare Intl
$363American Airlines
Tue, Nov 17 - Mon, Nov 23
American Airlines Logo
6:01 am - 7:22 pmSFO  San Francisco-STL Lambert-St Louis
11h 21m1 stop Chicago O'Hare Intl
American Airlines Logo
11:14 am - 7:57 pmSTL  Lambert-St Louis-SFO San Francisco
10h 43m1 stop Chicago O'Hare Intl
$363American Airlines
Wed, Oct 7 - Tue, Oct 13
Multiple Airlines Logo
6:04 am - 11:59 pmSFO  San Francisco-STL Lambert-St Louis
15h 55m1 stop Denver Intl
Multiple Airlines Logo
7:02 am - 7:31 pmSTL  Lambert-St Louis-SFO San Francisco
14h 29m2 stops Seattle/Tacoma Intl San Diego
$364Multiple Airlines
Wed, Sep 23 - Mon, Sep 28
Alaska Airlines Logo
9:13 pm - 5:10 pmSFO  San Francisco-STL Lambert-St Louis
17h 57m2 stops San Diego Portland
Alaska Airlines Logo
6:29 am - 4:17 pmSTL  Lambert-St Louis-SFO San Francisco
11h 48m2 stops Seattle/Tacoma Intl Los Angeles
$368Alaska Airlines
Thu, Dec 3 - Thu, Dec 10
Delta Logo
10:38 am - 11:26 pmSFO  San Francisco-STL Lambert-St Louis
10h 48m2 stops Seattle/Tacoma Intl Minneapolis St Paul
Delta Logo
7:08 am - 5:16 pmSTL  Lambert-St Louis-SFO San Francisco
12h 08m2 stops Salt Lake City Seattle/Tacoma Intl
$374Delta
Thu, Sep 24 - Thu, Oct 1
United Airlines Logo
12:45 pm - 6:43 pmSFO  San Francisco-STL Lambert-St Louis
3h 58mnonstop
United Airlines Logo
7:08 am - 9:30 amSTL  Lambert-St Louis-SFO San Francisco
4h 22mnonstop
$411United Airlines
Mon, Nov 2 - Wed, Nov 4
United Airlines Logo
12:15 pm - 6:05 pmSFO  San Francisco-STL Lambert-St Louis
3h 50mnonstop
United Airlines Logo
8:00 am - 10:36 amSTL  Lambert-St Louis-SFO San Francisco
4h 36mnonstop
$417United Airlines
Booking Insights

Price, demand and travel trends for San Francisco to St. Louis flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from San Francisco to St. Louis with more confidence.

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

Round-trip flights from San Francisco to St. Louis start at $353. Prices are below average for this route right now, with typical round-trip fares ranging from $441 to $683. The lowest price found in the past 5 days was $353 on Frontier.

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

Wednesday is the cheapest day of the week to fly from San Francisco to St. Louis, it is 7% cheaper than the average day. Sunday is the most expensive day with flight prices 13% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • September is the cheapest month to fly from San Francisco to St. Louis at $457 round-trip.
  • January ($640) and July ($603) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 40% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from San Francisco to St. Louis the cheapest?

Flights from San Francisco to St. Louis are cheapest 10 weeks before departure. Booking in this window typically costs about 47% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

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

 
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.

Key details for San Francisco to St. Louis flights

Low season

February

Cheapest flight

$178
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 5% 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

Your San Francisco to St. Louis flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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.

  • Which airlines offer extra legroom and free seat selection on San Francisco to St. Louis flights?

    Among airlines operating San Francisco to St. Louis flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • Southwest: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from San Francisco to St. Louis?

    2 airlines operate flights between San Francisco and St. Louis. The airlines offering nonstop flights on this route include:

    • United Airlines
    • Southwest

  • Which airports can I use when flying from San Francisco to St. Louis?

    Flights from San Francisco to St. Louis usually depart from San Francisco (SFO) and arrive at Lambert-St Louis (STL).

  • Which airlines include bags at no extra cost on San Francisco to St. Louis flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Southwest: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from San Francisco to St. Louis?

    Two cabin classes are available on flights from San Francisco to St. Louis:

    • Economy Class
    • First Class

  • How much can I save by taking a layover when flying from San Francisco to St. Louis?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $236 round-trip via Houston George Bush Intcntl (IAH), compared to $591 for nonstop.

  • What is the standard checked-bag allowance on flights from San Francisco to St. Louis?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$91 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from San Francisco to St. Louis?

    The Boeing 737 MAX 8 family is used most often on this route, operated mainly by United Airlines and Southwest. Other aircraft seen on the route include Airbus A319 variants.

  • Which airports do connecting flights from San Francisco to St. Louis pass through?

    One-stop flights from San Francisco to St. Louis most commonly connect through:

    • Denver Intl (DEN) - 41% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 15% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 15% of one-stop connections
    • Salt Lake City (SLC) - 10% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from San Francisco to St. Louis?

    Yes. Being flexible with your travel dates can save you up to 19% on the San Francisco to St. Louis route. Wednesday is the cheapest departure day at $509 round-trip on average, while Sunday is the most expensive at $622, a difference of $113. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How are flight departures from San Francisco to St. Louis spread across the day?

    Afternoon is the busiest departure period on San Francisco to St. Louis flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

  • What popular places can I visit in St. Louis?

    Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

  • What are the earliest and latest flights from San Francisco to St. Louis?

    These are the earliest and latest flight times available from San Francisco to St. Louis:

    • Earliest: departs at 6:15 am and lands at 10:07 am
    • Latest: departs at 4:32 pm and lands at 8:24 pm.

    The flight takes about 3h 52m.

  • How expensive are last-minute San Francisco to St. Louis flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 53% above the route average of $547. Book 10 weeks before departure for the lowest fares.

  • How long is a flight from San Francisco to St. Louis?

    A nonstop flight from San Francisco to St. Louis takes 3h 52m, covering 1,730 miles.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from San Francisco to St. Louis changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $353 to $2,328. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from San Francisco to St. Louis looking right now?

    One-way fares from San Francisco to St. Louis are currently lower than usual. Average one-way flight prices are about $191, which is 34% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from San Francisco to St. Louis?

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 55m, compared with 6h 22m via Phoenix Sky Harbor Intl (PHX) and 6h 32m via San Diego (SAN).

  • What is the time difference between San Francisco and St. Louis?

    St. Louis is 2 hours ahead of San Francisco (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
    · Hertz
    · Budget
    · Alamo
    · Enterprise Rent-A-Car
    · Payless

  • How much should I expect to pay for a San Francisco to St. Louis flight?

    Round-trip flights from San Francisco to St. Louis range from $441 to $683, with an average of $547 over the past 12 months. Anything below $441 counts as a good deal.

Your guide to booking San Francisco to St. Louis flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $509 - about $113 less than Sunday (18% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 47% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Francisco to St. Louis trip for September. Fares historically average $457 round-trip in that month - typically $183 less than the most expensive month, which is January (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Houston George Bush Intcntl Airport (IAH) can be cheaper than flying direct. The cheapest layover option averages $236 round-trip on this route - about $355 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.
    - MainStay Suites St. Louis Airport
    - Renaissance St. Louis Airport Hotel
    - Drury Inn & Suites St. Louis Airport
  • 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?

 
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