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St. Louis

$61+ Cheap flights from San Francisco Bay Area to St. Louis (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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — STL
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from San Francisco Bay Area to St. Louis

Cheapest flights from San Francisco Bay Area to St. Louis
Explore the most affordable flight options available from San Francisco Bay Area to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This Frontier deal was found by Cheapflights users on 12/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:20 pmSFO - STL
1 stop8h 20mFrontier
Sun 1/410:10 pmSTL - SFO
1 stop11h 38mFrontier
Deal found 12/26$512
This Frontier deal was found by Cheapflights users on 12/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:25 pmSFO - STL
1 stop8h 15mFrontier
Sun 1/410:10 pmSTL - SFO
1 stop11h 38mFrontier
Deal found 12/26$532
This Frontier deal was found by Cheapflights users on 12/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:20 pmSFO - STL
1 stop8h 20mFrontier
Mon 1/57:43 pmSTL - SFO
1 stop6h 41mFrontier
Deal found 12/26$562
This Frontier deal was found by Cheapflights users on 12/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:25 pmSFO - STL
1 stop8h 15mFrontier
Mon 1/57:43 pmSTL - SFO
1 stop6h 41mFrontier
Deal found 12/26$582
This Delta deal was found by Cheapflights users on 12/26. 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 12/319:21 amSFO - STL
2 stops23h 51mDelta
Sat 1/106:10 amSTL - SFO
2 stops17h 45mDelta
Deal found 12/26$595
This Delta deal was found by Cheapflights users on 12/26. 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 12/316:00 amSFO - STL
2 stops13h 34mDelta
Tue 1/67:00 amSTL - SFO
2 stops16h 55mDelta
Deal found 12/26$601
This Delta deal was found by Cheapflights users on 12/26. 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 12/316:00 amSFO - STL
2 stops14h 16mDelta
Thu 1/16:05 amSTL - SFO
2 stops18h 45mDelta
Deal found 12/26$609
This Delta deal was found by Cheapflights users on 12/26. 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 12/319:21 amSFO - STL
2 stops23h 51mDelta
Mon 1/57:00 amSTL - SFO
2 stops26h 57mDelta
Deal found 12/26$623
This Trip.com deal was found by Cheapflights users on 12/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:20 pmSFO - STL
1 stop8h 20mFrontier
Sat 1/310:10 pmSTL - SFO
1 stop11h 38mFrontier
Deal found 12/26$626
This Delta deal was found by Cheapflights users on 12/26. 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.
Tue 12/306:00 amSFO - STL
2 stops13h 34mDelta
Sat 1/106:10 amSTL - SFO
2 stops13h 37mDelta
Deal found 12/26$635
This Delta deal was found by Cheapflights users on 12/26. 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.
Tue 12/306:00 amSFO - STL
2 stops14h 16mDelta
Sun 1/115:48 pmSTL - SFO
1 stop7h 59mDelta
Deal found 12/26$637
This Delta deal was found by Cheapflights users on 12/26. 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 12/315:40 pmSJC - STL
2 stops15h 32mDelta
Sat 1/105:00 pmSTL - SJC
2 stops17h 32mDelta
Deal found 12/26$707

Find flight deals from San Francisco Bay Area to St. Louis

Keep the following information in mind while searching for San Francisco Bay Area to St. Louis flight deals. Data was last updated December 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$131
(WAYA)

One-way from

$61
(Trip.com)

Popular in

December

Cheapest in

February

Average price

$529
Provider with most accurate pricing for San Francisco-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Lambert-St Louis flights.
Search Deals
From San Francisco Bay Area to Lambert-St Louis
Search Deals
One-way flight from San Francisco Bay Area to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco Bay Area 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 28, 2025.
Use the filters below to find and compare flights from San Francisco Bay Area to St. Louis that are best for you.

Fly from

San Francisco Bay Area

Fly to

St. Louis

Route

Depart

Return

Price

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Fri 2/20

8:48 am-1:56 pm

1 stop27h 08m

Lambert-St Louis

Mon 2/23

10:11 pm-6:20 pm

1 stop22h 09m

$211

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sun 1/11

11:27 am-8:46 pm

1 stop7h 19m

Lambert-St Louis

Thu 1/15

1:35 pm-6:37 pm

1 stop7h 02m

$268

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sun 3/1

8:57 pm-9:13 pm

1 stop22h 16m

Lambert-St Louis

Thu 3/5

10:11 pm-6:07 pm

1 stop21h 56m

$270

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 2/19

7:15 am-12:25 am

2 stops15h 10m

Lambert-St Louis

Mon 2/23

6:40 pm-1:37 pm

2 stops20h 57m

$274

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Fri 2/20

11:45 am-12:25 am

2 stops10h 40m

Lambert-St Louis

Mon 2/23

6:40 pm-1:37 pm

2 stops20h 57m

$274

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Thu 2/19

10:20 am-12:25 am

2 stops12h 05m

Lambert-St Louis

Tue 2/24

6:10 am-3:51 pm

2 stops11h 41m

$274

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Mon 1/26

10:30 am-9:38 pm

2 stops9h 08m

Lambert-St Louis

Fri 1/30

6:10 am-1:43 pm

2 stops9h 33m

$274

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 3/25

6:05 am-5:07 pm

2 stops9h 02m

Lambert-St Louis

Sat 3/28

3:05 pm-12:07 am

2 stops11h 02m

$274

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Mon 2/23

10:20 am-11:23 pm

2 stops11h 03m

Lambert-St Louis

Thu 2/26

6:10 am-1:48 pm

2 stops9h 38m

$274

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Tue 1/20

10:30 am-9:38 pm

2 stops9h 08m

Lambert-St Louis

Sun 1/25

6:40 am-3:58 pm

2 stops11h 18m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 57 results
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Best time to book a flight from San Francisco Bay Area to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Francisco Bay Area 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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco Bay Area to St. Louis

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

Currently, February is the cheapest month in which you can book a flight from San Francisco Bay Area to St. Louis (average of $91). Flying from San Francisco Bay Area to St. Louis in June is currently the most expensive (average of $262). 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 XIH to STL?

Find hourly flight availability from San Francisco Bay Area 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 28, 2025.

One of the essential ways to save on airfare from San Francisco Bay Area to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 19% on airfare.

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 28, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from San Francisco Bay Area to St. Louis by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,256 reviews
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,019 reviews
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,113 reviews
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,072 reviews
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.8
Fair
3,065 reviews
Southwest
8.0
Very good
4,256 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area 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 airport do you fly into for flights to St. Louis from San Francisco Bay Area?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from San Francisco Bay Area to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    Flights from San Francisco Bay Area to Lambert-St Louis have been viewed 15 times in the past calendar month.

  • How long is the flight from San Francisco Bay Area to St. Louis?

    There are many flights that can get you from San Francisco Bay Area to St. Louis in 15h 10m. Fly via Frontier, Delta, or Alaska Airlines to get the fastest option. Airlines will cover a distance of 1710 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $79. American Airlines flights start at $91 while deals on Southwest start at $124 one-way.

  • What are the most popular routes from San Francisco Bay Area to St. Louis?

    Most travelers choose San Francisco - Lambert-St Louis, San Jose - Lambert-St Louis or Oakland - Lambert-St Louis when deciding on the best route from San Francisco Bay Area to St. Louis.

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

    The top 3 most reliable airlines when flying from San Francisco Bay Area to St. Louis are Air New Zealand (85%), United Airlines (83%) and SkyWest Airlines (80%).

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

    Looking for the cheapest flight from San Francisco Bay Area to St. Louis? While on average our users pay $398, our data indicates the cheapest price to be $119. The most popular route (San Francisco - Lambert-St Louis), is priced around $184.

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco Bay Area 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 Bay Area to St. Louis?

    Currently, February is the cheapest month in which you can book a flight from San Francisco Bay Area to St. Louis (average of $91). Flying from San Francisco Bay Area to St. Louis in June is currently the most expensive (average of $262). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for San Francisco Bay Area to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from San Francisco Bay Area to St. Louis

Discover the top 5 airlines that operate flights from San Francisco Bay Area 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$278FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$202Average$461FlexibilityNo cancel feeOn-time71%
DeltaCheapest$208Average$378FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$430FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$307Average$441FlexibilityNo cancel feeOn-time63%

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