Cheap flights from San Francisco to St. Louis

Flights overview

Useful information for finding cheap flights from San Francisco to St. Louis and booking your next trip
Cheapest round-trip flights $210
Frontier 1 stop 9 hr Fri, May 29 — Thu, Jun 4
The cheapest round-trip flight from San Francisco to St. Louis is currently $210
Cheapest one-way flight $105
Frontier 1 stop 9 hr Wed, May 27
The cheapest one-way flight from San Francisco to St. Louis is currently $105
Cheapest nonstop flights $347
United Nonstop 5 hr Mon, May 25 — Tue, Jun 2
The cheapest nonstop round-trip flight from San Francisco to St. Louis is currently $347
Last-minute weekend getaway $261
Frontier 1 stop 29 hr Fri, May 8 — Mon, May 11
The cheapest last-minute weekend getaway from San Francisco to St. Louis is currently $261
Cheapest business class flights $458
Frontier 1 stop 18 hr Mon, Jun 1 — Tue, Jun 9
The cheapest business class round-trip flight from San Francisco to St. Louis is currently $458
Fastest flight 3 hr 50 min The fastest nonstop flight from San Francisco to St. Louis takes 3 hr 50 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Francisco to St. Louis is typically October. The most expensive month to fly is typically July.
October
Cheapest
Typical prices: $150–260
July
Most expensive
Typical prices: $255–370

Popular airlines from San Francisco to St. Louis

  • United
    Nonstop
    from $347
    Typical price: $330–660
    12 weekly nonstop flights
    SFO - STL Every day
    551 weekly connecting flights
    SFO - STL Every day
  • Southwest
    Nonstop
    from $367
    Typical price: $375–700
    6 weekly nonstop flights
    SFO - STL Every Mon, Tue, Wed, Thu, Fri, Sun
    489 weekly connecting flights
    SFO - STL Every day
  • American
    from $367
    Typical price: $355–640
    374 weekly connecting flights
    SFO - STL Every day
  • Delta
    from $367
    Typical price: $360–800
    266 weekly connecting flights
    SFO - STL Every day
  • Alaska
    from $417
    Typical price: $380–850
    27 weekly connecting flights
    SFO - STL Every day
  • Frontier
    from $210
    Typical price: $200–465
    24 weekly connecting flights
    SFO - STL Every day

Popular airports near San Francisco

  • San Francisco International Airport (SFO)
    San Francisco United States 19 min 11 mi
  • Oakland San Francisco Bay Airport (OAK)
    Oakland United States 27 min 11 mi
  • Sacramento International Airport (SMF)
    Sacramento United States 1 hr 34 min 78 mi
  • San Jose Mineta International Airport (SJC)
    San Jose United States 51 min 39 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis United States 21 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria United States 2 hr 36 min 143 mi
  • Columbia Regional Airport (COU)
    Columbia United States 2 hr 8 min 109 mi
  • Indianapolis International Airport (IND)
    Indianapolis United States 3 hr 30 min 222 mi

Frequently asked questions about flying from San Francisco to St. Louis

The cheapest flights from San Francisco to St. Louis are usually in October. Typical ticket prices in October range from $150 to $260.
The cheapest round-trip flight from San Francisco to St. Louis recently found on Google Flights was with Frontier from $210. The cheapest one-way flight was with Frontier from $105.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest United flight from San Francisco to St. Louis is $347, flying from May 28 to Jun 3.
  • The cheapest Southwest flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest American flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest Delta flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest Alaska flight from San Francisco to St. Louis is $417, flying from May 30 to Jun 6.
  • The cheapest Frontier flight from San Francisco to St. Louis is $210, flying from May 29 to Jun 4.
The cheapest round-trip flight from San Francisco to St. Louis starts at $210 from Fri, May 29 to Thu, Jun 4. The cheapest one-way flight starts at $105 and departs on Wed, May 27.
3 hr 50 min is the shortest flight time from San Francisco to St. Louis.
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
It's easy to use Google Flights to find the cheapest days to fly from San Francisco to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from San Francisco to St. Louis really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from San Francisco to St. Louis.

In terms of nonstop flights, United is the most popular. United offers 12 nonstop flights and 551 connecting flights per week. United flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .

Other popular airlines flying from San Francisco to St. Louis are:
  • Southwest offers 6 nonstop flights and 489 connecting flights per week. Southwest flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .
  • American offers 374 connecting flights per week. American flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .
  • Delta offers 266 connecting flights per week. Delta flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .
  • Alaska offers 27 connecting flights per week. Alaska flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .
  • Frontier offers 24 connecting flights per week. Frontier flies from San Francisco International Airport (SFO) to St. Louis Lambert International Airport (STL) .
The number of connecting flights refers to distinct flights with at least one stop between San Francisco and St. Louis.
The cheapest round-trip flight from San Francisco to St. Louis recently found on Google Flights was with Frontier from $210. The cheapest one-way flight was with Frontier from $105.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest United flight from San Francisco to St. Louis is $347, flying from May 28 to Jun 3.
  • The cheapest Southwest flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest American flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest Delta flight from San Francisco to St. Louis is $367, flying from May 28 to Jun 3.
  • The cheapest Alaska flight from San Francisco to St. Louis is $417, flying from May 30 to Jun 6.
  • The cheapest Frontier flight from San Francisco to St. Louis is $210, flying from May 29 to Jun 4.
United and Southwest fly direct from San Francisco to St. Louis.
  • There are 12 United direct flights from San Francisco to St. Louis per week. Flights are available every day.
  • There are 6 Southwest direct flights from San Francisco to St. Louis per week. Flights are available on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
The cheapest last-minute deal between San Francisco and St. Louis at price $261 is offered by Frontier from Fri, May 8 to Mon, May 11.
United and Southwest fly direct from San Francisco to St. Louis.
  • There are 12 United direct flights from San Francisco to St. Louis per week. Flights are available every day.
  • There are 6 Southwest direct flights from San Francisco to St. Louis per week. Flights are available on Monday, Tuesday, Wednesday, Thursday, Friday and Sunday.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
There are direct flights from San Francisco to St. Louis on a daily basis.
The cheapest direct (nonstop) round-trip flights between San Francisco and St. Louis start at $347 from Mon, May 25 to Tue, Jun 2 with United.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from San Francisco to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between San Francisco and St. Louis start at $458 from Mon, Jun 1 to Tue, Jun 9 with Frontier.
The cheapest economy class round-trip flights between San Francisco and St. Louis start at $210 from Fri, May 29 to Thu, Jun 4.
To book business class trips from San Francisco to St. Louis, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between San Francisco and St. Louis starts at $261 from Fri, May 8 to Mon, May 11 with Frontier.
The cheapest last-minute deal between San Francisco and St. Louis at price $261 is offered by Frontier from Fri, May 8 to Mon, May 11.
To find last-minute flight deals from San Francisco to St. Louis, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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