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St. Louis

$61+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STL
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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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 October 16, 2025.

This Frontier deal was found by Cheapflights users on 10/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/263:50 pmLAS - STL
Nonstop3h 19mFrontier
Fri 11/2812:01 pmSTL - LAS
Nonstop3h 45mFrontier
Deal found 10/16$104
This Cheapflightsfares deal was found by Cheapflights users on 10/14. 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 10/318:32 amLAS - STL
Nonstop3h 25mFrontier
Sun 11/22:42 pmSTL - LAS
Nonstop3h 40mFrontier
Deal found 10/14$120
This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
Tue 10/282:24 pmSAN - STL
1 stop16h 43mFrontier
Tue 11/47:45 pmSTL - SAN
1 stop18h 07mFrontier
Deal found 10/14$122
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/78:48 pmLAS - STL
1 stop10h 19mFrontier
Sat 11/87:45 pmSTL - LAS
1 stop13h 44mFrontier
Deal found 10/14$124
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Wed 11/121:37 pmSAN - STL
1 stop17h 30mFrontier
Wed 11/197:45 pmSTL - SAN
1 stop18h 25mFrontier
Deal found 10/15$126
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Fri 11/73:20 pmLAS - STL
1 stop15h 47mFrontier
Sun 11/167:45 pmSTL - LAS
1 stop14h 17mFrontier
Deal found 10/15$137
This Frontier deal was found by Cheapflights users on 10/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:32 amLAS - STL
Nonstop3h 25mFrontier
Mon 11/179:07 pmSTL - LAS
Nonstop3h 38mFrontier
Deal found 10/15$144
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 11/111:37 pmSAN - STL
1 stop17h 30mFrontier
Sat 11/157:45 pmSTL - SAN
1 stop17h 32mFrontier
Deal found 10/15$151
This Frontier deal was found by Cheapflights users on 10/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:32 amLAS - STL
Nonstop3h 25mFrontier
Wed 11/197:45 pmSTL - LAS
1 stop5h 44mFrontier
Deal found 10/15$152
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/69:14 amSAN - STL
1 stop24h 10mFrontier
Sat 11/87:45 pmSTL - SAN
1 stop15h 35mFrontier
Deal found 10/16$153
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Fri 12/51:35 pmSNA - STL
1 stop18h 39mFrontier
Mon 12/87:43 pmSTL - SNA
1 stop18h 59mFrontier
Deal found 10/15$154
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:34 pmSAN - STL
2 stops18h 33mFrontier
Tue 11/47:45 pmSTL - SAN
1 stop27h 54mFrontier
Deal found 10/16$157

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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$122
(Kiwi.com)

One-way from

$61
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$360

Good round-trip deal

$306 or less

Good one-way deal

$163 or less
Provider with most accurate pricing for Los Angeles-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Lambert-St Louis flights.
Search Deals
From California to Lambert-St Louis
Search Deals
One-way flight from California to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from California to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from California to Lambert-St Louis.
Search Deals

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 October 16, 2025.
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

Fri 11/7

8:48 pm-9:07 am

1 stop10h 19m

Lambert-St Louis

Sat 11/8

4:51 pm-6:30 pm

Nonstop3h 39m

$131

San DiegoSt. Louis

SAN - STL

SANSTL

San Diego

Tue 10/28

2:24 pm-9:07 am

1 stop16h 43m

Lambert-St Louis

Tue 11/4

7:45 pm-8:24 pm

2 stops26h 39m

$152

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 10/28

2:20 pm-9:07 am

1 stop16h 47m

Lambert-St Louis

Fri 10/31

8:40 pm-1:35 pm

1 stop18h 55m

$166

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Sat 11/1

6:53 am-10:07 am

1 stop25h 14m

Lambert-St Louis

Wed 11/5

7:45 pm-11:10 am

1 stop17h 25m

$172

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Thu 10/30

6:53 am-9:07 am

1 stop24h 14m

Lambert-St Louis

Sun 11/2

7:45 pm-11:50 pm

1 stop6h 05m

$178

San DiegoSt. Louis

SAN - STL

SANSTL

San Diego

Fri 10/31

12:34 pm-9:07 am

2 stops18h 33m

Lambert-St Louis

Sun 11/2

7:45 pm-11:50 pm

1 stop6h 05m

$198

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 10/23

8:37 am-2:02 pm

Nonstop3h 25m

Lambert-St Louis

Thu 10/30

8:40 pm-10:36 am

2 stops15h 56m

$200

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Thu 11/13

7:22 am-5:27 pm

1 stop8h 05m

Lambert-St Louis

Sat 11/15

4:51 pm-8:42 pm

1 stop5h 51m

$210

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Thu 11/6

1:31 pm-9:07 am

2 stops17h 36m

Lambert-St Louis

Mon 11/10

7:45 pm-1:30 pm

1 stop19h 45m

$232

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 11/28

8:00 am-2:35 pm

1 stop4h 35m

Lambert-St Louis

Tue 12/2

5:50 pm-10:00 pm

1 stop6h 10m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

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 October 16, 2025.

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 27% 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 October 12, 2025.

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

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 28 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, Southwest, and Delta fly from California to St. Louis in about 4h 35m. The time it takes to get you to your destination can typically vary by up to 5h 44m. 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 ($71), Southwest ($99), and Delta ($127).

  • 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 Ontario - 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 Sun Country Air (100%), Qantas Airways (86%) and Qatar Airways (85%).

  • 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 $443, our data indicates the cheapest price to be $147. The most popular route (San Francisco - Lambert-St Louis), is priced around $193.

  • 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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$92Average$258FlexibilityNo cancel feeOn-time62%
DeltaCheapest$173Average$369FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$202Average$390FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$245Average$545FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$246Average$446FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$282Average$447FlexibilityNo cancel feeOn-time63%

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