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$97+ Cheap flights from St. Louis (STL) to San Francisco Bay Area

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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SFO
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap flight deals from St. Louis to San Francisco Bay Area

Keep the following information in mind while searching for St. Louis to San Francisco Bay Area flight deals. Data was last updated August 7, 2025.

Round-trip from

$203
(Southwest)

One-way from

$97
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$342
From Lambert-St Louis to San Francisco Bay Area
Search Deals
One-way flight from Lambert-St Louis to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to San Francisco Bay Area

Cheapest flights from St. Louis to San Francisco Bay Area
Explore the most affordable flight options available from St. Louis to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2025.

This Southwest deal was found by Cheapflights users on 8/6. 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 10/85:40 amSTL - SJC
1 stop7h 40mSouthwest
Tue 10/144:30 pmSJC - STL
1 stop5h 40mSouthwest
Deal found 8/6$203
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/215:09 pmSTL - SJC
1 stop6h 57mAmerican Airlines
Sat 10/256:00 amSJC - STL
1 stop8h 23mAmerican Airlines
Deal found 8/5$207
This Southwest deal was found by Cheapflights users on 8/5. 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.
Tue 10/213:00 pmSTL - SJC
1 stop8h 05mSouthwest
Sat 10/257:05 amSJC - STL
2 stops8h 05mSouthwest
Deal found 8/5$214
This Southwest deal was found by Cheapflights users on 8/6. 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 9/45:25 amSTL - SJC
1 stop7h 05mSouthwest
Thu 9/113:25 pmSJC - STL
1 stop7h 30mSouthwest
Deal found 8/6$218
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sat 10/114:05 pmSTL - OAK
1 stop7h 05mSouthwest
Mon 10/132:25 pmOAK - STL
1 stop6h 40mSouthwest
Deal found 8/7$220
This Southwest deal was found by Cheapflights users on 8/6. 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.
Mon 9/86:00 pmSTL - OAK
1 stop6h 15mSouthwest
Wed 9/108:25 amOAK - STL
1 stop6h 15mSouthwest
Deal found 8/6$222
This Southwest deal was found by Cheapflights users on 8/6. 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 10/235:00 amSTL - SJC
1 stop7h 05mSouthwest
Mon 10/276:35 amSJC - STL
2 stops7h 25mSouthwest
Deal found 8/6$223
This Southwest deal was found by Cheapflights users on 8/6. 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.
Sat 8/302:55 pmSTL - OAK
1 stop8h 35mSouthwest
Mon 9/12:55 pmOAK - STL
1 stop8h 00mSouthwest
Deal found 8/6$226
This Southwest deal was found by Cheapflights users on 8/7. 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 9/254:00 pmSTL - OAK
1 stop5h 40mSouthwest
Sun 9/2810:25 amOAK - STL
1 stop6h 10mSouthwest
Deal found 8/7$228
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 9/263:35 pmSTL - SJC
1 stop7h 30mAlaska Airlines
Mon 9/2912:52 pmSJC - STL
1 stop9h 07mAlaska Airlines
Deal found 8/5$232
This Southwest deal was found by Cheapflights users on 8/7. 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.
Fri 9/1912:20 pmSTL - SJC
1 stop6h 05mSouthwest
Sat 9/209:00 amSJC - STL
1 stop6h 45mSouthwest
Deal found 8/7$235
This Justfly.com deal was found by Cheapflights users on 8/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:54 pmSTL - SJC
1 stop17h 32mFrontier
Thu 8/216:27 pmSJC - STL
1 stop17h 19mFrontier
Deal found 8/6$238

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to San Francisco Bay Area 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 August 7, 2025.
Use the filters below to find and compare flights from St. Louis to San Francisco Bay Area that are best for you.

Fly from

St. Louis

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 10/8

5:40 am-11:20 am

1 stop7h 40m

San Jose

Tue 10/14

4:30 pm-12:10 am

1 stop5h 40m

$203

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 10/21

5:09 pm-10:06 pm

1 stop6h 57m

San Jose

Sat 10/25

6:00 am-4:23 pm

1 stop8h 23m

$207

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 10/21

3:00 pm-9:05 pm

1 stop8h 05m

San Jose

Sat 10/25

7:05 am-5:10 pm

2 stops8h 05m

$214

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 9/4

5:25 am-10:30 am

1 stop7h 05m

San Jose

Thu 9/11

3:25 pm-12:55 am

1 stop7h 30m

$218

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Sat 10/11

4:05 pm-9:10 pm

1 stop7h 05m

Oakland

Mon 10/13

2:25 pm-11:05 pm

1 stop6h 40m

$220

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Mon 9/8

6:00 pm-10:15 pm

1 stop6h 15m

Oakland

Wed 9/10

8:25 am-4:40 pm

1 stop6h 15m

$222

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 10/23

5:00 am-10:05 am

1 stop7h 05m

San Jose

Mon 10/27

6:35 am-4:00 pm

2 stops7h 25m

$223

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Sat 8/30

2:55 pm-9:30 pm

1 stop8h 35m

Oakland

Mon 9/1

2:55 pm-12:55 am

1 stop8h 00m

$226

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Thu 9/25

4:00 pm-7:40 pm

1 stop5h 40m

Oakland

Sun 9/28

10:25 am-6:35 pm

1 stop6h 10m

$228

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Fri 9/26

3:35 pm-9:05 pm

1 stop7h 30m

San Jose

Mon 9/29

12:52 pm-11:59 pm

1 stop9h 07m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis to San Francisco Bay Area

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

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco Bay Area (average of $276). Flying from St. Louis to San Francisco Bay Area in June is currently the most expensive (average of $358). 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 STL to XIH?

Find hourly flight availability from St. Louis to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 7, 2025.

When flying from St. Louis to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 San Francisco Bay Area. Reviews last updated August 7, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,247 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,987 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Hawaiian Airlines
7.8
Good
2,631 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Francisco Bay Area. 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 from for flights from St. Louis to San Francisco Bay Area?

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

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

    Within the past month, 16 users have taken a look at flights from Lambert-St Louis to San Francisco Bay Area.

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

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $97. However, be on the lookout for offers from Alaska Airlines and Southwest, as they are both options that can get you from St. Louis to San Francisco Bay Area for a low price.

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

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

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

    Before booking your flight to San Francisco Bay Area from St. Louis, check out the most reliable airlines to get you to your destination on time: Southwest (79%), Air New Zealand (59%), Asiana Airlines( 55%).

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

    Looking at all options, your cheapest flight can be booked for $205. While the most popular route (Lambert-St Louis - San Francisco) can be booked for $198 on average our data indicates $780 when flying from St. Louis to San Francisco Bay Area.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to San Francisco Bay Area (average of $276). Flying from St. Louis to San Francisco Bay Area in June is currently the most expensive (average of $358). 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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Alternative routes for St. Louis to San Francisco Bay Area

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

Discover the top 5 airlines that operate flights from St. Louis to San Francisco Bay Area. 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 August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$209FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$226Average$442FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$242Average$384FlexibilityNo cancel feeOn-time69%
DeltaCheapest$246Average$346FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$420FlexibilityNo cancel feeOn-time63%

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