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$33+ Cheap flights from California 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STL
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
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Cheap flight deals from California to St. Louis

Keep the following information in mind while searching for California to St. Louis flight deals. Data was last updated January 16, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$67
(Kiwi.com)

One-way from

$33
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$411

Good round-trip deal

$355 or less

Good one-way deal

$192 or less
Provider with most accurate pricing for Los Angeles-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Lambert-St Louis flights.
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From California to Lambert-St Louis
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One-way flight from California to Lambert-St Louis
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from California to Lambert-St Louis.
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Price to beat on a one-way flight from California to Lambert-St Louis.
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Find flight deals from California to St. Louis

Cheapest flights from California to St. Louis
Explore the most affordable flight options available from California to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/124:10 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Sat 2/146:41 pm
STL
-
LAS
Nonstop3h 50m
Frontier
Deal found 1/14$67
This Frontier deal was found by Cheapflights users on 1/14. 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.
Fri 2/204:10 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Mon 2/2310:11 pm
STL
-
LAS
Nonstop3h 48m
Frontier
Deal found 1/14$68
This Super.com deal was found by Cheapflights users on 1/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/134:10 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Fri 2/2010:11 pm
STL
-
LAS
Nonstop3h 48m
Frontier
Deal found 1/14$88
This Cheapflightsfares deal was found by Cheapflights users on 1/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/124:10 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Sat 2/212:51 pm
STL
-
LAS
1 stop19h 50m
Frontier
Deal found 1/15$98
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/145:30 am
LAS
-
STL
1 stop6h 26m
Frontier
Sat 2/146:41 pm
STL
-
LAS
Nonstop3h 50m
Frontier
Deal found 1/14$102
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/63:32 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Sat 2/73:46 pm
STL
-
LAS
1 stop10h 13m
Frontier
Deal found 1/14$117
This CheapOair deal was found by Cheapflights users on 1/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:59 am
LAS
-
STL
1 stop12h 54m
Frontier
Fri 2/2710:11 pm
STL
-
LAS
Nonstop3h 48m
Frontier
Deal found 1/16$119
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2012:59 am
LAS
-
STL
1 stop10h 57m
Frontier
Mon 2/2310:11 pm
STL
-
LAS
Nonstop3h 48m
Frontier
Deal found 1/14$122
This Cheapflightsfares deal was found by Cheapflights users on 1/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/53:50 pm
LAS
-
STL
Nonstop3h 16m
Frontier
Sat 2/73:46 pm
STL
-
LAS
1 stop10h 13m
Frontier
Deal found 1/14$127
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:00 pm
SAN
-
STL
1 stop19h 48m
Frontier
Sat 4/118:16 pm
STL
-
SAN
1 stop29h 46m
Frontier
Deal found 1/15$128
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:18 pm
SAN
-
STL
1 stop19h 28m
Frontier
Mon 2/238:47 pm
STL
-
SAN
1 stop25h 37m
Frontier
Deal found 1/14$135
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/229:16 pm
SFO
-
STL
1 stop20h 46m
Frontier
Wed 2/254:51 pm
STL
-
SFO
1 stop9h 37m
Frontier
Deal found 1/15$136

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 January 16, 2026.
Use the filters below to find and compare flights from California to St. Louis that are best for you.

Fly from

California

Fly to

St. Louis

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 2/12

4:10 pm-9:26 pm

Nonstop3h 16m

Lambert-St Louis

Sat 2/21

6:41 pm-8:31 pm

Nonstop3h 50m

$67

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 2/13

4:10 pm-9:26 pm

Nonstop3h 16m

Lambert-St Louis

Fri 2/20

10:11 pm-11:59 pm

Nonstop3h 48m

$88

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 4/10

4:28 pm-9:48 pm

Nonstop3h 20m

Lambert-St Louis

Mon 4/13

10:44 pm-12:36 am

Nonstop3h 52m

$98

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Tue 2/24

12:59 am-3:53 pm

1 stop12h 54m

Lambert-St Louis

Fri 2/27

10:11 pm-11:59 pm

Nonstop3h 48m

$119

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 2/20

12:59 am-1:56 pm

1 stop10h 57m

Lambert-St Louis

Mon 2/23

10:11 pm-11:59 pm

Nonstop3h 48m

$122

San DiegoSt. Louis

SAN - STL

SANSTL

San Diego

Fri 2/6

8:16 pm-2:46 pm

1 stop16h 30m

Lambert-St Louis

Mon 2/9

1:40 pm-12:08 am

1 stop12h 28m

$163

San DiegoSt. Louis

SAN - STL

SANSTL

San Diego

Fri 2/13

6:25 am-1:56 pm

1 stop29h 31m

Lambert-St Louis

Mon 2/16

10:11 pm-8:24 pm

2 stops24h 13m

$163

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Wed 2/25

8:40 am-3:53 pm

1 stop5h 13m

Lambert-St Louis

Sat 2/28

2:51 pm-11:59 pm

1 stop11h 08m

$164

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Thu 2/5

11:04 am-9:06 pm

1 stop8h 02m

Lambert-St Louis

Mon 2/9

1:40 pm-12:20 am

1 stop12h 40m

$180

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Fri 2/13

6:45 am-9:26 pm

1 stop12h 41m

Lambert-St Louis

Mon 2/16

10:11 pm-3:42 pm

1 stop19h 31m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 60 results
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Best time to book a flight from California to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from California 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 California to St. Louis

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

Currently, September is the cheapest month in which you can book a flight from California to St. Louis (average of $71). Flying from California to St. Louis in August is currently the most expensive (average of $206). 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 CA to STL?

Find hourly flight availability from California 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 January 16, 2026.

When flying from California to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from California to St. Louis. Price data was last updated on January 10, 2026.

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

Weekly flight availability from California to St. Louis

Explore weekly flight availability from California 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 January 16, 2026.

The most flights from USCA to STL are scheduled on a Monday (12 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

Related info for your journey

Find useful and relevant information for your journey from California 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 California?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from California to St. Louis.

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

    The California to Lambert-St Louis flight path was viewed by 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from California to St. Louis?

    Airlines like Frontier and Southwest fly from California to St. Louis in about 3h 16m. The time it takes to get you to your destination can typically vary by up to 3h 19m. The distance from California to St. Louis is about 1367 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from California to St. Louis are Frontier ($67), American Airlines ($89), and Southwest ($111).

  • What are the most popular routes from California to St. Louis?

    The most popular route from California to St. Louis is San Francisco - Lambert-St Louis. You may also consider Los Angeles - Lambert-St Louis or San Diego - Lambert-St Louis.

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

    The top 3 most reliable airlines when flying from California to St. Louis are SkyWest Airlines (78%), American Airlines (78%) and Cathay Pacific (77%).

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

    Looking for the cheapest flight from California to St. Louis? While on average our users pay $342, our data indicates the cheapest price to be $138. The most popular route (San Francisco - Lambert-St Louis), is priced around $209.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California 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 California to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from California to St. Louis (average of $71). Flying from California to St. Louis in August is currently the most expensive (average of $206). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for California to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from California to St. Louis

Discover the top 6 airlines that operate flights from California 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 January 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$237FlexibilityNo cancel feeOn-time62%
DeltaCheapest$136Average$364FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$202Average$393FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$453FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$257Average$487FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$282Average$451FlexibilityNo cancel feeOn-time63%

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