Cheap flights from St. Louis to San Francisco

Flights overview

Useful information for finding cheap flights from St. Louis to San Francisco and booking your next trip
Cheapest round-trip flights $180
Frontier 1 stop 16 hr Mon, May 11 — Mon, May 18
The cheapest round-trip flight from St. Louis to San Francisco is currently $180
Cheapest one-way flight $105
Frontier 1 stop 10 hr Sat, Jun 6
The cheapest one-way flight from St. Louis to San Francisco is currently $105
Cheapest nonstop flights $357
United Nonstop 5 hr Sat, May 23 — Sat, May 30
The cheapest nonstop round-trip flight from St. Louis to San Francisco is currently $357
Last-minute weekend getaway $270
Frontier 1 stop 19 hr Thu, Apr 30 — Mon, May 4
The cheapest last-minute weekend getaway from St. Louis to San Francisco is currently $270
Cheapest business class flights $478
Frontier 1 stop 10 hr Sat, Jun 6 — Sat, Jun 13
The cheapest business class round-trip flight from St. Louis to San Francisco is currently $478
Fastest flight 4 hr 5 min The fastest nonstop flight from St. Louis to San Francisco takes 4 hr 5 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 St. Louis to San Francisco is typically September. The most expensive month to fly is typically July.
September
Cheapest
Typical prices: $155–275
July
Most expensive
Typical prices: $260–370

Popular airlines from St. Louis to San Francisco

  • United
    Nonstop
    from $347
    Typical price: $335–670
    11 weekly nonstop flights
    STL - SFO Every day
    650 weekly connecting flights
    STL - SFO Every day
  • Southwest
    Nonstop
    from $372
    Typical price: $375–700
    6 weekly nonstop flights
    STL - SFO Every Mon, Tue, Wed, Thu, Fri, Sun
    506 weekly connecting flights
    STL - SFO Every day
  • American
    from $367
    Typical price: $355–650
    349 weekly connecting flights
    STL - SFO Every day
  • Delta
    from $367
    Typical price: $360–800
    259 weekly connecting flights
    STL - SFO Every day
  • Alaska
    from $327
    Typical price: $385–860
    30 weekly connecting flights
    STL - SFO Every day
  • Frontier
    from $180
    Typical price: $200–450
    19 weekly connecting flights
    STL - SFO Every Mon, Wed, Thu, Fri, Sat, Sun

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
  • MidAmerica St. Louis Airport (BLV)
    Belleville United States 34 min 20 mi

Popular airports near San Francisco

  • San Francisco International Airport (SFO)
    San Francisco United States 20 min 11 mi
  • Oakland San Francisco Bay Airport (OAK)
    Oakland United States 28 min 11 mi
  • Sacramento International Airport (SMF)
    Sacramento United States 1 hr 35 min 78 mi
  • San Jose Mineta International Airport (SJC)
    San Jose United States 52 min 39 mi

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

The cheapest flights from St. Louis to San Francisco are usually in September. Typical ticket prices in September range from $155 to $275.
The cheapest round-trip flight from St. Louis to San Francisco recently found on Google Flights was with Frontier from $180. 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 St. Louis to San Francisco is $347, flying from May 28 to Jun 3.
  • The cheapest Southwest flight from St. Louis to San Francisco is $372, flying from May 28 to Jun 3.
  • The cheapest American flight from St. Louis to San Francisco is $367, flying from May 28 to Jun 3.
  • The cheapest Delta flight from St. Louis to San Francisco is $367, flying from May 28 to Jun 3.
  • The cheapest Alaska flight from St. Louis to San Francisco is $327, flying from May 28 to Jun 3.
  • The cheapest Frontier flight from St. Louis to San Francisco is $180, flying from May 11 to May 18.
The cheapest round-trip flight from St. Louis to San Francisco starts at $180 from Mon, May 11 to Mon, May 18. The cheapest one-way flight starts at $105 and departs on Sat, Jun 6.
4 hr 5 min is the shortest flight time from St. Louis to San Francisco.
Apr–Dec is when most people visit San Francisco, with crowds peaking in summer. Although average temperatures are higher then, mornings and evenings often have damp, chilly fog. In summer, street fairs and cultural institutions offer free outdoor entertainment. Winter visitors will find the opera and ballet seasons in full swing. Major annual events include Chinese New Year (Feb), Bay to Breakers footrace (May), San Francisco Pride parade and festival (Jun), and San Francisco Fleet Week (Oct).
It's easy to use Google Flights to find the cheapest days to fly from St. Louis to San Francisco.
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 St. Louis to San Francisco 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 St. Louis to San Francisco.

In terms of nonstop flights, United is the most popular. United offers 11 nonstop flights and 650 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .

Other popular airlines flying from St. Louis to San Francisco are:
  • Southwest offers 6 nonstop flights and 506 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .
  • American offers 349 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .
  • Delta offers 259 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .
  • Alaska offers 30 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .
  • Frontier offers 19 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO) .
The number of connecting flights refers to distinct flights with at least one stop between St. Louis and San Francisco.
The cheapest round-trip flight from St. Louis to San Francisco recently found on Google Flights was with Frontier from $180. 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 St. Louis to San Francisco is $347, flying from May 28 to Jun 3.
  • The cheapest Southwest flight from St. Louis to San Francisco is $372, flying from May 28 to Jun 3.
  • The cheapest American flight from St. Louis to San Francisco is $367, flying from May 28 to Jun 3.
  • The cheapest Delta flight from St. Louis to San Francisco is $367, flying from May 28 to Jun 3.
  • The cheapest Alaska flight from St. Louis to San Francisco is $327, flying from May 28 to Jun 3.
  • The cheapest Frontier flight from St. Louis to San Francisco is $180, flying from May 11 to May 18.
United and Southwest fly direct from St. Louis to San Francisco.
  • There are 11 United direct flights from St. Louis to San Francisco per week. Flights are available every day.
  • There are 6 Southwest direct flights from St. Louis to San Francisco 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 St. Louis and San Francisco at price $270 is offered by Frontier from Thu, Apr 30 to Mon, May 4.
United and Southwest fly direct from St. Louis to San Francisco.
  • There are 11 United direct flights from St. Louis to San Francisco per week. Flights are available every day.
  • There are 6 Southwest direct flights from St. Louis to San Francisco 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 St. Louis to San Francisco on a daily basis.
The cheapest direct (nonstop) round-trip flights between St. Louis and San Francisco start at $357 from Sat, May 23 to Sat, May 30 with United.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to San Francisco, 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 St. Louis and San Francisco start at $478 from Sat, Jun 6 to Sat, Jun 13 with Frontier.
The cheapest economy class round-trip flights between St. Louis and San Francisco start at $180 from Mon, May 11 to Mon, May 18.
To book business class trips from St. Louis to San Francisco, 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 St. Louis and San Francisco starts at $270 from Thu, Apr 30 to Mon, May 4 with Frontier.
The cheapest last-minute deal between St. Louis and San Francisco at price $270 is offered by Frontier from Thu, Apr 30 to Mon, May 4.
To find last-minute flight deals from St. Louis to San Francisco, 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.

Search more flights

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