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$123+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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The best prices from San Francisco to Lambert-St Louis are usually found in January or February, booked 81 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 December 19, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(United Airlines)

One-way from

$123
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$439
Provider with most accurate pricing for San Francisco-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Lambert-St Louis flights.
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From San Francisco to Lambert-St Louis
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One-way flight from San Francisco to Lambert-St Louis
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High demand for flights, 4% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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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 December 19, 2024.

This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/185:40 amSFO - STL
1 stop9h 31mDelta
Wed 1/86:00 amSTL - SFO
1 stop7h 35mDelta
Deal found 12/17$342
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/1812:00 pmSFO - STL
Nonstop3h 56mUnited Airlines
Wed 12/258:50 amSTL - SFO
Nonstop4h 47mUnited Airlines
Deal found 12/17$383
This American Airlines deal was found by Cheapflights users on 12/19. 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.
Mon 12/2311:49 pmSFO - STL
1 stop7h 03mAmerican Airlines
Thu 12/266:30 amSTL - SFO
1 stop6h 42mAmerican Airlines
Deal found 12/19$402
This Southwest deal was found by Cheapflights users on 12/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1810:20 amSFO - STL
Nonstop3h 40mSouthwest
Wed 12/252:40 pmSTL - SFO
1 stop9h 55mSouthwest
Deal found 12/17$438
This FlightHub deal was found by Cheapflights users on 12/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/188:41 pmSFO - STL
1 stop12h 29mFrontier
Thu 12/2612:00 pmSTL - SFO
1 stop6h 42mFrontier
Deal found 12/18$464
This Mytrip deal was found by Cheapflights users on 12/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2011:59 pmSFO - STL
3 stops33h 31mMultiple Airlines
Fri 12/279:50 amSTL - SFO
3 stops15h 01mMultiple Airlines
Deal found 12/19$875
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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.
Wed 12/258:00 amSFO - STL
2 stops13h 59mAlaska Airlines
Tue 12/312:23 pmSTL - SFO
2 stops9h 53mAlaska Airlines
Deal found 12/18$891

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 December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Fri 1/17

1:20 pm-10:20 pm

1 stop7h 00m

Lambert-St Louis

Fri 1/24

7:00 am-9:45 am

Nonstop4h 45m

$237

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Sun 1/5

5:45 am-8:13 am

1 stop24h 28m

Lambert-St Louis

Mon 1/6

6:49 pm-12:21 am

1 stop7h 32m

$239

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 1/22

12:27 am-1:21 pm

1 stop10h 54m

Lambert-St Louis

Sun 1/26

4:53 pm-10:44 pm

1 stop7h 51m

$246

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Tue 1/21

2:07 pm-1:53 pm

2 stops21h 46m

Lambert-St Louis

Fri 1/24

2:49 pm-9:12 pm

1 stop8h 23m

$254

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Sat 1/18

3:10 pm-11:14 pm

1 stop6h 04m

Lambert-St Louis

Mon 1/27

5:00 pm-12:14 am

1 stop9h 14m

$256

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Fri 1/31

10:05 am-3:55 pm

Nonstop3h 50m

Lambert-St Louis

Sun 2/2

10:25 am-12:55 pm

Nonstop4h 30m

$273

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Thu 1/30

8:10 am-11:03 pm

2 stops12h 53m

Lambert-St Louis

Sat 2/1

7:09 pm-12:09 am

1 stop7h 00m

$320

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Sat 1/18

6:10 am-8:43 pm

2 stops12h 33m

Lambert-St Louis

Fri 1/24

12:15 pm-10:56 pm

3 stops12h 41m

$447

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Sat 2/1

11:05 pm-10:54 am

1 stop9h 49m

$123

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Sat 2/1

5:55 am-1:42 pm

1 stop5h 47m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 15 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 December 13, 2024.

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 December 19, 2024.

It’s optimal to fly from San Francisco to St. Louis at noon. By choosing this option you can save up to 31% 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 December 16, 2024.

Travelers seeking maximum savings on their San Francisco to St. Louis flight should consider departing on Wednesday at noon 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 December 19, 2024.

The most flights from SFO to STL are scheduled on a Thursday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 December 19, 2024.
To help decide which airline to fly from San Francisco to St. Louis, see what other customers have to say about United Airlines, Frontier and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,551 reviews
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,836 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from San Francisco to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Francisco to St. Louis?

    You will need to book a flight from San Francisco to Lambert-St Louis if you want to fly from San Francisco to St. Louis. At least 5 different airlines have flights from San Francisco (SFO) to Lambert-St Louis (STL) on a regular basis. There are 3 flights to St. Louis from the San Francisco airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SFO to STL to be around 3h 46m.

  • How popular is this San Francisco to St. Louis flight route?

    Flights from San Francisco to Lambert-St Louis have been viewed 3 times in the past calendar month.

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

    Currently priced at $237, United Airlines will fly you from San Francisco to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and American Airlines - these airlines can fly you to your destination from $239 and $246, respectively. Users have found that United Airlines is 37% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $123 on United Airlines. Other airlines that offer cheap prices include American Airlines from $124 and Alaska Airlines from $129 one-way.

  • What are the most reliable airlines from San Francisco to St. Louis?

    Before booking your flight to St. Louis from San Francisco, check out the most reliable airlines to get you to your destination on time: Asiana Airlines (82%), Air New Zealand (81%), United Airlines( 80%).

  • What are the cheapest flights from San Francisco to St. Louis?

    On average you can expect to pay $643 for a flight from San Francisco to St. Louis. The cheapest flight overall is $124 while the most popular route, (San Francisco - Lambert-St Louis) is currently priced at $182.

  • Where are the most common layover locations when flying from San Francisco to St. Louis?

    Flights departing from San Francisco and landing in St. Louis layover in Denver most frequently.

  • What are some popular things to do or see while on a layover in Denver?

    If you're on a layover in Denver and looking for things to do, consider visiting Coors Field, 16th Street Mall, or Paramount Theatre. Those on a layover in Denver interested in visiting Coors Field, 16th Street Mall, or Paramount Theatre can do so by traveling 18.4 mi, 18.7 mi, and 18.6 mi, respectively from Denver Intl. Those on a layover in Denver in need of a rental car can book one at Denver Intl for about $61.

  • Where are the least popular layover locations for San Francisco to St. Louis flights?

    San Francisco to St. Louis flights that have layovers will least frequently stop in Salt Lake City.

  • Can I find deals for flights from San Francisco to St. Louis that include hotel bookings?

    Yes. In addition to deals on San Francisco to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to St. Louis.

  • Can I find deals for business class flights from San Francisco to St. Louis?

    Yes. Cheapflights offers flight deals from San Francisco to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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Top 5 airlines flying from San Francisco to St. Louis

Discover the top 5 airlines that operate flights from San Francisco to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$119Average$219FlexibilityNo cancel feeOn-time62%
DeltaCheapest$257Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$257Average$386FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$439FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$432FlexibilityNo cancel feeOn-time63%
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