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St. Louis

$59+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STL
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
1 adult, Economy
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Cheap 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 May 5, 2026.

This Super.com deal was found by Cheapflights users on 5/4. 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.
Wed 8/1212:40 pm
LAS
-
STL
Nonstop3h 25m
Frontier
Mon 8/172:52 pm
STL
-
LAS
Nonstop3h 36m
Frontier
Deal found 5/4$156
This Trip.com deal was found by Cheapflights users on 4/30. 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.
Wed 5/276:00 am
ONT
-
STL
1 stop11h 23m
Frontier
Fri 5/299:06 pm
STL
-
ONT
1 stop12h 58m
Frontier
Deal found 4/30$173
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Mon 6/812:59 am
LAS
-
STL
1 stop16h 24m
Frontier
Tue 6/167:03 pm
STL
-
LAS
1 stop7h 01m
Frontier
Deal found 5/2$175
This Expedia deal was found by Cheapflights users on 5/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
ONT
-
STL
1 stop11h 23m
Frontier
Sat 5/236:30 pm
STL
-
ONT
1 stop15h 34m
Frontier
Deal found 5/2$180
This Frontier deal was found by Cheapflights users on 5/4. 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 5/1811:36 am
ONT
-
STL
1 stop28h 30m
Frontier
Tue 5/268:08 pm
STL
-
ONT
1 stop15h 57m
Frontier
Deal found 5/4$181
This Trip.com deal was found by Cheapflights users on 5/4. 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.
Wed 8/1210:49 am
ONT
-
STL
1 stop6h 34m
Frontier
Sat 8/158:08 pm
STL
-
ONT
1 stop5h 42m
Frontier
Deal found 5/4$182
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2410:50 am
ONT
-
STL
1 stop6h 33m
Frontier
Thu 5/289:21 pm
STL
-
ONT
1 stop12h 43m
Frontier
Deal found 4/30$185
This Expedia deal was found by Cheapflights users on 5/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:25 am
SAN
-
STL
1 stop10h 58m
Frontier
Wed 5/276:51 pm
STL
-
SAN
1 stop28h 21m
Frontier
Deal found 5/2$185
This Trip.com deal was found by Cheapflights users on 5/4. 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.
Tue 6/26:00 am
ONT
-
STL
1 stop11h 23m
Frontier
Tue 6/96:03 pm
STL
-
ONT
1 stop27h 48m
Frontier
Deal found 5/4$187
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:39 pm
ONT
-
STL
1 stop26h 27m
Frontier
Sat 5/308:08 pm
STL
-
ONT
1 stop5h 41m
Frontier
Deal found 4/30$192
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/26:00 am
ONT
-
STL
1 stop11h 23m
Frontier
Sun 6/76:33 pm
STL
-
ONT
2 stops41h 32m
Frontier
Deal found 5/4$193
This CheapOair deal was found by Cheapflights users on 4/30. 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 5/264:39 pm
ONT
-
STL
1 stop23h 27m
Frontier
Mon 6/19:21 pm
STL
-
ONT
1 stop20h 23m
Frontier
Deal found 4/30$196

Find 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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$156
(Super.com)

One-way from

$59
(Trip.com)

Popular in

March

Cheapest in

October

Average price

$411

Good round-trip deal

$413 or less

Good one-way deal

$225 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. 12% potential increase in price ($57 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 May 2026
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 May 5, 2026.
Use the filters below to find and compare flights from California to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Sat 6/20

6:00 am-6:53 pm

1 stop10h 53m

Lambert-St Louis

Fri 6/26

2:56 pm-7:51 pm

1 stop6h 55m

$250

OntarioSt. Louis

ONT - STL

ONTSTL

Ontario

Tue 6/23

10:50 am-7:23 pm

1 stop6h 33m

Lambert-St Louis

Fri 6/26

7:38 pm-11:49 pm

1 stop6h 11m

$250

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 7/16

6:15 am-7:23 pm

1 stop11h 08m

Lambert-St Louis

Sun 7/19

2:52 pm-4:28 pm

Nonstop3h 36m

$255

San DiegoSt. Louis

SAN - STL

SANSTL

San Diego

Tue 8/4

10:40 pm-7:45 am

1 stop7h 05m

Lambert-St Louis

Tue 8/11

8:25 am-10:10 am

Nonstop3h 45m

$343

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 5/27

12:12 pm-6:17 pm

Nonstop4h 05m

Lambert-St Louis

Sat 5/30

7:23 pm-9:43 pm

Nonstop4h 20m

$347

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Thu 6/18

4:40 pm-1:50 am

1 stop7h 10m

Lambert-St Louis

Thu 7/2

5:45 am-11:30 am

1 stop7h 45m

$348

OaklandSt. Louis

OAK - STL

OAKSTL

Oakland

Tue 6/2

6:00 am-4:46 pm

2 stops8h 46m

Lambert-St Louis

Wed 6/10

7:55 pm-11:54 pm

1 stop5h 59m

$362

San FranciscoSt. Louis

SFO - STL

SFOSTL

San Francisco

Wed 6/3

12:12 pm-6:17 pm

Nonstop4h 05m

Lambert-St Louis

Wed 6/10

5:10 am-9:18 am

1 stop6h 08m

$363

OaklandSt. Louis

OAK - STL

OAKSTL

Oakland

Wed 5/27

5:45 am-5:55 pm

2 stops10h 10m

Lambert-St Louis

Sat 5/30

6:05 am-12:05 pm

2 stops8h 00m

$377

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Tue 6/9

12:35 pm-6:15 pm

Nonstop3h 40m

Lambert-St Louis

Mon 6/15

7:45 pm-12:15 am

1 stop6h 30m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 60 resultsSorted by cheapest first
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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

How far ahead should I book a flight from California to St. Louis?

To ensure you get the cheapest price possible for a flight from California to St. Louis, you should look to book at least 70 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 California to St. Louis?

Currently, February is the cheapest month in which you can book a flight from California to St. Louis (average of $91). Flying from California to St. Louis in September is currently the most expensive (average of $1,176). 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 May 5, 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 23% versus a flight in the afternoon.

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 May 2, 2026.

Travelers seeking maximum savings on their California to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday 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 May 5, 2026.

The most flights from USCA to STL are scheduled on a Monday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from California to St. Louis?

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 31 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, United Airlines, and Southwest fly from California to St. Louis in about 4h 05m. The time it takes to get you to your destination can typically vary by up to 6h 53m. The distance from California to St. Louis is about 1730 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 ($68), 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 Los Angeles - Lambert-St Louis. You may also consider San Francisco - 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 Malaysia Airlines (83%), Alaska Airlines (83%) and Japan Airlines (82%).

  • 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 $413, our data indicates the cheapest price to be $183. The most popular route (Los Angeles - Lambert-St Louis), is priced around $182.

  • 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, February is the cheapest month in which you can book a flight from California to St. Louis (average of $91). Flying from California to St. Louis in September is currently the most expensive (average of $1,176). 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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
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 7 airlines flying from California to St. Louis

Discover the top 7 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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$139Average$386FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$140Average$245FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$186Average$421FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$209Average$406FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$236Average$463FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$257Average$505FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$276Average$476FlexibilityNo cancel feeOn-time63%

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