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Cheap flights from Los Angeles to St. Louis from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Los Angeles to St. Louis departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Los Angeles to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:03 am - 11:19 am
LAX
-
STL
23h 16m
1 stop
Multiple Airlines Logo
8:16 pm - 10:50 am
STL
-
LAX
16h 34m
1 stop
$282Multiple Airlines
Fri, Mar 27 - Mon, Apr 6
Frontier Logo
8:58 pm - 9:48 am
LAX
-
STL
10h 50m
1 stop
Frontier Logo
8:16 pm - 12:12 am
STL
-
LAX
5h 56m
1 stop
$283Frontier
Sun, Apr 5 - Fri, Apr 10
Frontier Logo
10:00 pm - 6:50 am
LAX
-
STL
30h 50m
1 stop
Frontier Logo
8:12 pm - 12:11 am
STL
-
LAX
5h 59m
1 stop
$284Frontier
Mon, Apr 13 - Thu, Apr 16
United Airlines Logo
11:59 pm - 10:45 am
LAX
-
STL
8h 46m
1 stop
United Airlines Logo
8:54 am - 1:01 pm
STL
-
LAX
6h 07m
1 stop
$286United Airlines
Sat, Apr 11 - Wed, Apr 15
Frontier Logo
8:19 pm - 12:15 pm
LAX
-
STL
13h 56m
1 stop
Frontier Logo
8:12 pm - 3:57 pm
STL
-
LAX
21h 45m
2 stops
$287Frontier
Mon, Mar 16 - Fri, Mar 20
Frontier Logo
6:15 am - 9:49 am
LAX
-
STL
25h 34m
1 stop
Frontier Logo
12:16 pm - 12:59 pm
STL
-
LAX
26h 43m
1 stop
$288Frontier
Sun, Mar 8 - Fri, Mar 13
Frontier Logo
8:57 pm - 9:49 am
LAX
-
STL
10h 52m
1 stop
Frontier Logo
8:12 pm - 3:57 pm
STL
-
LAX
21h 45m
2 stops
$289Frontier
Sun, Mar 8 - Fri, Mar 13
Frontier Logo
7:44 pm - 3:21 pm
LAX
-
STL
17h 37m
2 stops
Frontier Logo
8:12 pm - 12:11 am
STL
-
LAX
5h 59m
1 stop
$290Frontier
Fri, May 1 - Mon, May 4
Frontier Logo
7:15 am - 6:50 am
LAX
-
STL
21h 35m
2 stops
Frontier Logo
8:12 pm - 8:40 am
STL
-
LAX
14h 28m
1 stop
$291Frontier
Tue, May 12 - Sat, May 16
Multiple Airlines Logo
9:12 am - 5:24 pm
LAX
-
STL
6h 12m
1 stop
Multiple Airlines Logo
10:47 pm - 9:30 pm
STL
-
LAX
24h 43m
1 stop
$292Multiple Airlines
Sun, Mar 8 - Sun, Mar 8

Delta flights from Los Angeles to St. Louis

Our best Delta deals on Los Angeles to St. Louis flight tickets
Delta
Mar 4
LAX11:45 amLos Angeles
10h 40m
2 stops
STL12:25 amLambert-St Louis
Mar 10
STL7:15 amLambert-St Louis
10h 54m
2 stops
LAX4:09 pmLos Angeles
$293
Delta
Mar 25
LAX11:50 amLos Angeles
10h 31m
2 stops
STL12:21 amLambert-St Louis
Mar 30
STL2:12 pmLambert-St Louis
10h 38m
2 stops
LAX10:50 pmLos Angeles
$303
Delta
Feb 27
LAX11:45 amLos Angeles
9h 38m
2 stops
STL11:23 pmLambert-St Louis
Mar 2
STL2:22 pmLambert-St Louis
10h 23m
2 stops
LAX10:45 pmLos Angeles
$313

Frontier flights from Los Angeles to St. Louis

Our best Frontier deals on Los Angeles to St. Louis flight tickets
Frontier
Apr 5
LAX8:58 pmLos Angeles
10h 50m
1 stop
STL9:48 amLambert-St Louis
Apr 10
STL8:16 pmLambert-St Louis
5h 56m
1 stop
LAX12:12 amLos Angeles
$283
Frontier
Apr 13
LAX10:00 pmLos Angeles
30h 50m
1 stop
STL6:50 amLambert-St Louis
Apr 16
STL8:12 pmLambert-St Louis
5h 59m
1 stop
LAX12:11 amLos Angeles
$284
Frontier
Feb 12
LAX9:16 pmLos Angeles
22h 10m
1 stop
STL9:26 pmLambert-St Louis
Feb 17
STL3:49 pmLambert-St Louis
33h 29m
2 stops
LAX11:18 pmLos Angeles
$286

momondo Fare Finder

 
Customize your flight search to find flights from Los Angeles 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, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Los Angeles to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 3/27

10:03 am-11:19 am

1 stop23h 16m

Lambert-St Louis

Mon 4/6

8:16 pm-10:50 am

1 stop16h 34m

$282

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 4/5

8:58 pm-9:48 am

1 stop10h 50m

Lambert-St Louis

Fri 4/10

8:16 pm-12:12 am

1 stop5h 56m

$283

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Mon 4/13

10:00 pm-6:50 am

1 stop30h 50m

Lambert-St Louis

Thu 4/16

8:12 pm-12:11 am

1 stop5h 59m

$284

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sat 4/11

11:59 pm-10:45 am

1 stop8h 46m

Lambert-St Louis

Wed 4/15

8:54 am-1:01 pm

1 stop6h 07m

$286

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Mon 3/16

8:19 pm-12:15 pm

1 stop13h 56m

Lambert-St Louis

Fri 3/20

8:12 pm-3:57 pm

2 stops21h 45m

$287

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 3/8

6:15 am-9:49 am

1 stop25h 34m

Lambert-St Louis

Fri 3/13

12:16 pm-12:59 pm

1 stop26h 43m

$288

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 3/8

8:57 pm-9:49 am

1 stop10h 52m

Lambert-St Louis

Fri 3/13

8:12 pm-3:57 pm

2 stops21h 45m

$289

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 5/1

7:44 pm-3:21 pm

2 stops17h 37m

Lambert-St Louis

Mon 5/4

8:12 pm-12:11 am

1 stop5h 59m

$290

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Tue 5/12

7:15 am-6:50 am

2 stops21h 35m

Lambert-St Louis

Sat 5/16

8:12 pm-8:40 am

1 stop14h 28m

$291

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 3/8

9:12 am-5:24 pm

1 stop6h 12m

Lambert-St Louis

Sun 3/8

10:47 pm-9:30 pm

1 stop24h 43m

$292

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Los Angeles to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Los Angeles to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. The month of April is another great option to travel to St. Louis, with average flight prices from Los Angeles averaging around $357.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $389. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $428. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Los Angeles in the evening is the least expensive time of day to depart. momondo users have found prices as low as $351 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $411 per ticket.

What is the cheapest Los Angeles to Lambert-St Louis flight route?

Fly from Los Angeles to Lambert-St Louis for the best Los Angeles - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Los Angeles when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $389 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Los Angeles for as low as $312 on momondo.

What cabin class options are available on Los Angeles to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Los Angeles to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Los Angeles to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Los Angeles to St. Louis.

How have Los Angeles to St. Louis flight prices changed over time?

As of February 2026, prices for Los Angeles to St. Louis flights are approximately 36% cheaper when compared to flights at the same time last year.

When to book flights from Los Angeles to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Los Angeles to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Los Angeles to St. Louis (LAX to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Los Angeles to St. Louis

Best Price Found

$196

Fastest flight time

3h 25m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Los Angeles in the past 72 hours is $196. The best round-trip flight deal from Los Angeles to St. Louis found on momondo in the last 72 hours is $360.
The fastest flight from Los Angeles to St. Louis takes 3h 25m
Direct flights go from Los Angeles to St. Louis every day.
There is 1 airport in St. Louis. From Los Angeles there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • How far is Los Angeles to Lambert-St Louis by plane?

    The straight-line distance from Los Angeles to Lambert-St Louis is 1588.8 mi. Typically, this will take 3h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Los Angeles Airport to Lambert-St Louis Airport?

    Prices for flights from Los Angeles Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Los Angeles Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Los Angeles Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Los Angeles Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Los Angeles to St. Louis?

  • What is the most popular airline from Los Angeles to St. Louis?

Best airlines flying from Los Angeles to St. Louis

Compare and see reviews for airlines that fly from Los Angeles to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $140Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
11,834 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $283Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
DeltaPriceFrom $296Free CancellationRating
7.9
8,138 reviews
Search Delta flights
American AirlinesPriceFrom $302Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights
United AirlinesPriceFrom $329Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Los Angeles to St. Louis

    The lowest priced Alaska Airlines flight from Los Angeles to St. Louis from the last 72 hours was $257. Generally, Alaska Airlines has 7 flights on this route every week with an average price of $505. Alaska Airlines is rated 8.0/10 by our users.

  • Southwest Flights From Los Angeles to St. Louis

    Across 4,272 Southwest reviews on momondo, the average score is 8.0/10. Southwest flies from Los Angeles to St. Louis about 14 times each week, with ticket deals ranging from $283 to $391. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Los Angeles to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Los Angeles.

Can I find flights from Los Angeles to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Los Angeles which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Los Angeles to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Los Angeles.

I’m not ready to book a flight from Los Angeles to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Los Angeles to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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