Cheap flights from St. Louis to San Francisco from $111
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Francisco departing on 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from St. Louis to San Francisco
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American Airlines flights from St. Louis to San Francisco
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How to get the cheapest flight ticket from St. Louis to San Francisco
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Francisco?
If you aren’t able to travel to San Francisco during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $331.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from St. Louis to San Francisco is on a Thursday when prices can be found for as low as $558. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $1,060.
What is the cheapest time of day to depart on your flight to San Francisco?
Our data shows that the cheapest St. Louis to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $454. Flights in the evening are often more expensive with an average ticket price of $1,186.
What is the cheapest Lambert-St Louis to San Francisco flight route?
Fly from Lambert-St Louis to San Francisco for the best Lambert-St Louis - San Francisco flight prices
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from St. Louis when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $371 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from St. Louis for as low as $302 on momondo.
What cabin class options are available on Lambert-St Louis to San Francisco flights?
There are 4 cabin classes available to choose from on Lambert-St Louis to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on St. Louis to San Francisco flights?
No. A direct flight is the cheapest option for a flight between St. Louis to San Francisco.
How have St. Louis to San Francisco flight prices changed over time?
As of June 2025, prices for St. Louis to San Francisco flights are approximately 29% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to San Francisco?
Frontier, Sun Country Air, and American Airlines are the most popular carriers operating from Lambert-St Louis to San Francisco
What airlines fly to San Francisco?
United Airlines, Southwest and Delta are the top three most popular airlines that fly to San Francisco from St. Louis according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 5 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to San Francisco on average per day?
As of June 2025, 4 flights take off from St. Louis and land in San Francisco each day. The most common flight departure time for this route is 7:00PM, with 48% of daily flights taking off in the evening.
How many flights depart from St. Louis to San Francisco on average per week?
The number of flights available between St. Louis and San Francisco is 34 per week as of June 2025. The most frequent departure day is Wed, with 21% of weekly flights leaving on this day.
When to book flights from St. Louis to San Francisco
Cheap St. Louis to San Francisco (STL to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Francisco
Best Price Found | $111 |
|---|---|
Fastest flight time | 4h 10m |
Direct flights | Every day |
Airports in San Francisco | 1 airport |
How far is Lambert-St Louis to San Francisco by plane?
There are 1739.7 mi between Lambert-St Louis and San Francisco. In terms of flight time, this usually takes a little over 4h 10m.
When did momondo last update prices for flights from Lambert-St Louis Airport to San Francisco Airport?
Prices for flights from Lambert-St Louis Airport to San Francisco Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to San Francisco Airport?
As of June 2025, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to San Francisco Airport.
How old do you have to be to fly from Lambert-St Louis Airport to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to San Francisco?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to San Francisco is Boeing 737-800 Passenger/BBJ2 (winglets), representing 26.09% of all bookings. The subsequent popular models are Airbus A319 at 18.32%, Boeing 737 MAX 9 at 18.17%, and Boeing 737 MAX 8 at 13.51%.
What is the most popular airline from St. Louis to San Francisco?
momondo data reveals that the most frequently booked airline on the route from St. Louis to San Francisco is United Airlines, representing 50% of all bookings. The subsequent popular airlines are Southwest at 15%, Frontier at 14%, and American Airlines at 13%.
Best airlines flying from St. Louis to San Francisco
Compare and see reviews for airlines that fly from St. Louis to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $117 | Free Cancellation | Rating 5.9 3,295 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $239 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $239 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $308 | Free Cancellation | Rating 8.0 4,287 reviews |
Southwest Flights From St. Louis to San Francisco
Southwest is one of the most popular airlines flying from St. Louis to San Francisco, operating 7 flights/week on average for this route. A good Southwest flight deal for St. Louis to San Francisco starts from $308 round-trip, up to an average price of $435. Our users have rated Southwest at 8.0/10.
United Airlines Flights From St. Louis to San Francisco
Another popular option for St. Louis to San Francisco flights is United Airlines (7.4/10, 8,790 ratings). United Airlines flies from St. Louis to San Francisco around 12 times per week, with deals starting from $239 round-trip and rising to an average price of around $403.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to San Francisco?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from St. Louis.
Can I find flights from St. Louis to San Francisco with flexible booking policies on momondo?
Yes. All flights to San Francisco from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from St. Louis to San Francisco?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to San Francisco.
I’m not ready to book a flight from St. Louis to San Francisco right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.