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

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The best prices from St Louis to San Francisco are usually found in July or August, booked 20 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

How to find the cheapest flight from
St Louis (STL) to San Francisco (SFO)

All the information you need to plan the best STL to SFO flight in 2021: compare St Louis to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.
STL - SFO
Price
$254 - $400
SFO
Temperature
59 - 77 °F
SFO
Rainfall
0 - 4.7 inches

Popular in

March

High demand for flights, 17% potential price rise

Cheapest in

July

Best time to find cheap flights, 24% potential price drop

Round-trip from

$254

From St Louis to San Francisco

One-way from

$161

One-way flight from St Louis to San Francisco

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from St Louis to San Francisco?

Users have found that flying from St Louis to San Francisco on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from St Louis to San Francisco?

Users have found that booking a flight from St Louis to San Francisco at least 35 days early can save you up to 7% on average compared to booking a flight this week. If booking 35 days before your flight isn’t an option for you, users have found flights from St Louis to San Francisco for as little as $99 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $105 for flights departing within the next 3 days.

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

August can be a great time to fly to San Francisco from St Louis with a flight ticket averaging about $108. Cheapflights users have found deals in the month of August for as cheap as $48. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from St Louis to San Francisco (STL - SFO)?

It’s optimal to fly from St Louis to San Francisco at noon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the afternoon.

Cheap flights from St Louis to San Francisco in May, June 2021

The best prices found for STL to SFO flights for May, June
8 Jun - 15 Jun
$168pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
19 May - 21 May
$183pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
26 May - 2 Jun
$187pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis

St Louis to San Francisco 2021 flight deals

Cheap flights to San Francisco from St Louis found for this year
8 Jun - 15 Jun
$168pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
19 May - 21 May
$183pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
26 May - 2 Jun
$187pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to San Francisco from St Louis

Save time with St Louis to San Francisco direct flight deals
24 Sep - 28 Sep
$219pp
STL
Lambert-St Louis
United Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
STL
Lambert-St Louis
25 Sep - 28 Sep
$252pp
STL
Lambert-St Louis
United Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
STL
Lambert-St Louis
23 Sep - 28 Sep
$272pp
STL
Lambert-St Louis
United Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from St Louis to San Francisco

Late deals on round-trip flights to San Francisco from St Louis, departing today and this week
19 May - 21 May
$183pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
20 May - 2 Jun
$188pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis
18 May - 21 May
$198pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
STL
Lambert-St Louis

One-way flights to San Francisco from St Louis

The cheapest one-way flights from St Louis to San Francisco
3:00 am - 7:58 pm
Frontier
1 Stop
18h 58m
STL - SFO
Frontier
$161
Kiwi.com
6:00 am - 5:25 am
Sun Country Air
1 Stop
25h 25m
STL - SFO
Sun Country Air
3:39 pm - 4:46 am
Multiple Airlines
3 Stops
39h 07m
STL - SFO
Multiple Airlines
$165
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St Louis</span> to <span class="emphasized">San Francisco</span> flights.

Flight FAQs

From St Louis to San Francisco

Are flight prices decreasing from St Louis to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Lambert-St Louis to San Francisco to control the spread of COVID-19?

Alaska Airlines is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Lambert-St Louis to San Francisco include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Lambert-St Louis to San Francisco have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, Frontier, and American Airlines flying from Lambert-St Louis to San Francisco have implemented new flexible cancellation policies.

Can I find flights from St Louis to San Francisco for under $200 on Cheapflights?

Yes, there are multiple flights from St Louis to San Francisco for under $200. The cheapest flight booked recently is on Multiple Airlines for just $168, but on average you can expect to pay $203.

Are there nonstop flights from St Louis to San Francisco for under $300 on Cheapflights?

Cheapflights has at least 13 direct flights from St Louis to San Francisco under $300. A good price for a nonstop flight from St Louis to San Francisco is less than $416.

Are there last-minute flights available from St Louis to San Francisco for under $200?

There are currently 20+ open flights from St Louis to San Francisco within the next 7 days for less than $200.

How popular is this flight route?

The Lambert-St Louis to San Francisco flight path was viewed by 78 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Does it rain more in St Louis or San Francisco?

The rainfall in St Louis is generally less than the rainfall in San Francisco. This will continue over the next 18 days.

Is St Louis weather warmer or cooler than San Francisco?

With an average temperature of 90 °F, peak weather can be found in July. As a traveler, expect to see changes in flight prices during that period. The temperatures in San Francisco are colder than in St Louis.

How long is the flight from St Louis to San Francisco?

Airlines like United Airlines, Frontier, and American Airlines fly from St Louis to San Francisco in about 4h 33m. The time it takes to get you to your destination can typically vary by up to 4h 14m. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from St Louis to San Francisco round-trip?

Our cheapest airline available from St Louis to San Francisco is Frontier. Our recent data shows that you can find tickets from as low as $183 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $219 and $230 round-trip. You may be able to fly from St Louis to San Francisco for 45% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from St Louis to San Francisco one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $81. Check flights for Sun Country Air, as they currently have the next best price.

Alternative routes for St Louis to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Francisco

Things to know before you go - useful duration and weather info for your trip from St Louis to San Francisco.
Flight duration
4h 23m
Average temperature for May in San Francisco
69.8 °F
Avg rainfall for May in San Francisco
0.6 ″

Airports servicing St. Louis

Airports servicing San Francisco

Top 7 airlines flying from St Louis to San Francisco

The chart below displays the airlines Cheapflights users traveling from St Louis to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$107 $246 No cancel fee 62%
Sun Country Air
$141 $261 No cancel fee 83%
Alaska Airlines
$139 $308 No cancel fee 75%
Delta
$137 $313 No cancel fee N/A
American Airlines
$152 $334 No cancel fee 71%
United Airlines
$183 $404 No cancel fee 69%
Southwest
$223 $504 No cancel fee 63%
Weekly flight availability
from St Louis to San Francisco
See how many times per day planes take to the skies headed from St Louis to San Francisco.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
0 flights
Wednesday
0 flights
Thursday
1 daily flight
Friday
1 daily flight
Saturday
0 flights
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