STL to SFO Flight Deals: Your Guide from the Gateway Arch to the Golden Gate
Cheapest flight found
$150
Last updated Mar 13, 2026
Prices by Month
Price History
Tracking the Jun 4, 2026 departure — the cheapest date we found.
Price Behavior: STL → SFO
Based on 6 months of fare data collected by Trip Manta.
Lowest Fare
$150
Highest Fare
$292
Median Fare
$282
Price Spread
$142
Prices vary significantly — hourly tracking is especially valuable here.
Cheapest month to fly: June 2026 (from $150)
Most expensive month: September 2026 (from $292)
Biggest price drop caught: $72 between consecutive checks
Most frequent cheapest airline: Frontier
What This Means for You
Flights from St. Louis to San Francisco range from $150 to $292, a $142 spread across the months we track. If your dates are flexible, June 2026 tends to have the lowest fares. Because prices on this route change significantly, setting up hourly price alerts gives you the best chance of catching a short-lived drop before it corrects. We have caught drops as large as $72 between hourly checks on this route.
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From
St. Louis (STL)
To
San Francisco (SFO)
Airport Information
St. Louis (STL)
St. Louis Lambert International Airport (STL) serves as the primary aviation hub for the Missouri region, featuring a rich history as one of the oldest municipal airports in the United States. It offers two main terminals connected by a frequent shuttle service, with Terminal 2 serving as a major operational base for Southwest Airlines. The airport provides a variety of local dining options and unique art installations that reflect the industrious spirit of the Gateway City.
San Francisco (SFO)
San Francisco International Airport (SFO) is a major international gateway located approximately 13 miles south of downtown San Francisco. Known for its world-class amenities, including an accredited aviation museum and a dedicated yoga room, SFO consists of four terminals organized in a circular layout. It serves as a primary hub for United Airlines and Alaska Airlines, offering seamless connections to the Pacific Rim via its massive, modern International Terminal.
Frequently Asked Questions
How long is the flight from St. Louis to San Francisco?
A direct flight usually takes about 4 hours and 30 minutes, though return flights are often faster due to tailwinds.
Which airlines offer non-stop flights between STL and SFO?
Southwest Airlines and United Airlines are the primary carriers that have historically offered non-stop service on this route.
What is the time difference between St. Louis and San Francisco?
San Francisco is in the Pacific Time Zone, which is two hours behind the Central Time Zone used in St. Louis.
What is the cheapest way to get from SFO to downtown San Francisco?
Taking the BART (Bay Area Rapid Transit) train directly from the SFO International Terminal is the most affordable and reliable transportation method.
Are there lounges available at STL for passengers?
Yes, passengers can access the Wingtips Lounge in Terminal 1 or the American Airlines Admirals Club, depending on their ticket class and membership.
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