St. Louis

$38+ Cheap flights from San Francisco to St. Louis (SFO - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Feb 23 — Mar 21
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The best prices from San Francisco to Lambert-St Louis are usually found in January or April, booked 81 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from San Francisco to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$260
(CheapOair)

One-way from

$38
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$410

Good round-trip deal

$373 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for San Francisco-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for San Francisco-Lambert-St Louis flights.
From San Francisco to Lambert-St Louis
One-way flight from San Francisco to Lambert-St Louis
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from San Francisco to Lambert-St Louis.
Price to beat on a one-way flight from San Francisco to Lambert-St Louis.

Find flight deals from San Francisco to St. Louis

Cheapest flights from San Francisco to St. Louis
Explore the most affordable flight options available from San Francisco to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2025.

This CheapOair deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/910:17 pmSFO - STL
1 stop23h 29mFrontier
Sun 4/134:57 pmSTL - SFO
1 stop30h 31mFrontier
Deal found 2/17$260
This Travelocity deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:10 pmSFO - STL
1 stop11h 06mMultiple Airlines
Tue 3/187:00 amSTL - SFO
1 stop10h 43mMultiple Airlines
Deal found 2/17$277
This United Airlines deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1712:05 pmSFO - STL
Nonstop3h 48mUnited Airlines
Mon 3/247:00 amSTL - SFO
Nonstop4h 38mUnited Airlines
Deal found 2/17$297
This Delta deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/179:30 pmSFO - STL
1 stop9h 44mDelta
Mon 3/245:35 pmSTL - SFO
1 stop7h 40mDelta
Deal found 2/17$317
This Alaska Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/89:20 amSFO - STL
1 stop12h 39mAlaska Airlines
Wed 4/96:44 amSTL - SFO
2 stops13h 59mAlaska Airlines
Deal found 2/18$328
This American Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/212:15 amSFO - STL
1 stop9h 09mAmerican Airlines
Mon 4/147:04 amSTL - SFO
1 stop8h 32mAmerican Airlines
Deal found 2/16$330
This Southwest deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/17:55 pmSFO - STL
1 stop11h 40mSouthwest
Sun 5/49:30 pmSTL - SFO
Nonstop4h 20mSouthwest
Deal found 2/18$356

Find flights from San Francisco to St. Louis within your budget

Customize your flight search to find flights from San Francisco to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 18, 2025.

Fly from

San Francisco

Fly to

St. Louis

Route

Depart

Return

Price

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 4/9

10:17 pm-11:46 pm

1 stop23h 29m

Lambert-St Louis

Sun 4/13

4:57 pm-9:28 pm

1 stop30h 31m

$260

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Thu 3/13

8:10 pm-9:16 am

1 stop11h 06m

Lambert-St Louis

Tue 3/18

7:00 am-3:43 pm

1 stop10h 43m

$277

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Mon 3/17

12:05 pm-5:53 pm

Nonstop3h 48m

Lambert-St Louis

Mon 3/24

7:00 am-9:38 am

Nonstop4h 38m

$297

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Mon 3/17

9:30 pm-9:14 am

1 stop9h 44m

Lambert-St Louis

Mon 3/24

5:35 pm-11:15 pm

1 stop7h 40m

$317

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Tue 4/8

9:20 am-11:59 pm

1 stop12h 39m

Lambert-St Louis

Wed 4/9

6:44 am-6:43 pm

2 stops13h 59m

$328

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 4/2

12:15 am-11:24 am

1 stop9h 09m

Lambert-St Louis

Mon 4/14

7:04 am-1:36 pm

1 stop8h 32m

$330

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Thu 5/1

7:55 pm-9:35 am

1 stop11h 40m

Lambert-St Louis

Sun 5/4

9:30 pm-11:50 pm

Nonstop4h 20m

$356

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Tue 3/25

7:26 pm-9:16 am

1 stop11h 50m

$38

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Thu 3/20

11:59 pm-11:34 am

1 stop9h 35m

$130

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 4/2

10:45 am-4:52 pm

Nonstop4h 07m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 16 results
1
2

Compare providers for flights from San Francisco to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Francisco to St. Louis

Get recent, data-driven insights about flights from San Francisco to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Francisco to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to St. Louis. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to St. Louis, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Francisco to St. Louis?

Currently, August is the cheapest month in which you can book a flight from San Francisco to St. Louis (average of $311). Flying from San Francisco to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to STL?

Find hourly flight availability from San Francisco to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 18, 2025.

It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 9% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to St. Louis. Price data was last updated on February 16, 2025.

Travelers seeking maximum savings on their San Francisco to St. Louis flight should consider departing on Monday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to St. Louis

Explore weekly flight availability from San Francisco to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 18, 2025.

The most flights from SFO to STL are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 18, 2025.
To help decide which airline to fly from San Francisco to St. Louis, see what other customers have to say about Southwest, Alaska Airlines and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

8.0
Very good