$114 Cheap Flights from Los Angeles (LAX) to St. Louis (STL)

View $114 flight on Thu, May 1, 2025Opens in a new window

Popular airlines from Los Angeles Intl. (LAX) to St. Louis Lambert Intl. Airport (STL)

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Find available prices by choosing your travel dates.

Cheap Flights from Los Angeles to St. Louis (LAX-STL)

Prices were available within the past 7 days and start at $114 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Apr 29 - Wed, May 7
LAX
Los Angeles
STL
St. Louis
$188 Roundtrip, just found
$188
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Apr 29 from Los Angeles to St. Louis, returning Wed, May 7, priced at $188 just found
Frontier Airlines
Tue, Apr 29 - Wed, Apr 30
LAX
Los Angeles
STL
St. Louis
$198 Roundtrip, just found
$198
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Apr 29 from Los Angeles to St. Louis, returning Wed, Apr 30, priced at $198 just found
Frontier Airlines
Thu, May 1 - Wed, May 7
LAX
Los Angeles
STL
St. Louis
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 1 from Los Angeles to St. Louis, returning Wed, May 7, priced at $208 just found
Frontier Airlines
Thu, May 8 - Sun, May 11
LAX
Los Angeles
STL
St. Louis
$217 Roundtrip, just found
$217
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, May 8 from Los Angeles to St. Louis, returning Sun, May 11, priced at $217 just found
Frontier Airlines
Wed, Apr 30 - Thu, May 1
LAX
Los Angeles
STL
St. Louis
$218 Roundtrip, just found
$218
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Apr 30 from Los Angeles to St. Louis, returning Thu, May 1, priced at $218 just found
Frontier Airlines
Wed, Apr 30 - Sat, May 3
LAX
Los Angeles
STL
St. Louis
$227 Roundtrip, just found
$227
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Apr 30 from Los Angeles to St. Louis, returning Sat, May 3, priced at $227 just found
Southwest Airlines
Wed, Jun 4 - Sat, Jun 7
LAX
Los Angeles
STL
St. Louis
$240 Roundtrip, found 6 hours ago
$240
Roundtrip
found 6 hours ago
Select Southwest Airlines flight, departing Wed, Jun 4 from Los Angeles to St. Louis, returning Sat, Jun 7, priced at $240 found 6 hours ago
Sun Country Airlines
Sat, May 10 - Wed, May 14
LAX
Los Angeles
STL
St. Louis
$246 Roundtrip, just found
$246
Roundtrip
just found
Select Sun Country Airlines flight, departing Sat, May 10 from Los Angeles to St. Louis, returning Wed, May 14, priced at $246 just found
Alaska Airlines
Tue, May 20 - Wed, May 28
LAX
Los Angeles
STL
St. Louis
$256 Roundtrip, found 5 hours ago
$256
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Tue, May 20 from Los Angeles to St. Louis, returning Wed, May 28, priced at $256 found 5 hours ago
American Airlines
Tue, Jul 1 - Sat, Jul 5
LAX
Los Angeles
STL
St. Louis
$300 Roundtrip, found 14 hours ago
$300
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Jul 1 from Los Angeles to St. Louis, returning Sat, Jul 5, priced at $300 found 14 hours ago
Flights from Los Angeles (LAX) to St. Louis (STL)
Origin airport
Los Angeles Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$188
Distance
1588 mi

Los Angeles to St. Louis Flights

The cheapest times to fly from Los Angeles to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Los Angeles to St. Louis are during the month of April. You can find some of the cheapest flights from Los Angeles to St. Louis with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Los Angeles to St. Louis

Sunday is one of the best days to book for cheap flights from Los Angeles to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Los Angeles to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Los Angeles to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $114 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Los Angeles to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Los Angeles to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL) cost?
Cheap return fares from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL) start at $300. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving LAX on May 20 2025 and touching down at STL. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from LAX to STL?
The cheapest flights from LAX to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
When setting off from Los Angeles Intl. Airport (LAX), you can hop on a direct flight to Lambert-St. Louis Intl. Airport (STL) with Southwest Airlines.
What is the cheapest airline that flies from LAX to STL?
Take off from LAX to STL with Southwest Airlines. This carrier currently has the cheapest one-way ticket on this route, starting from $153. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from LAX on June 4 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
On average, just 1 direct flight departs each day from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL). Seeking more options? Use Expedia’s filter tool to discover flights with layovers and add a new destination to your journey.
What are the most popular departure times for flights from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
More people fly between LAX and STL at 5 PM than at any other point in the day. Rather skip the crowds? Try choosing a quieter departure window and you could save on your fare as well.
What day of the week has the most flights from LAX to STL?
If you fly on a Thursday, you’ll get the largest range of choices for flights from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL).
What is the earliest flight from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
Take the earliest flight at around 6:15AM UTC-8, heading out of Los Angeles Intl. Airport (LAX). You’ll be flying for roughly 3h 35m, arriving at Lambert-St. Louis Intl. Airport (STL) at approximately 11:50AM UTC-6.
How long does it take to fly from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
The average flight duration from LAX to STL is 3 hours and 35 minutes, covering a total distance of 1,600 mi.
What airline has the least delays from LAX to STL?
Consider traveling with Alaska Airlines if you’d like to fly straight from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL) without any interruptions. This carrier has the strongest track record for punctuality, with an on-time score of 90%. Want to be notified if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
Select a flight from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for St. Louis from Los Angeles Intl. Airport (LAX)?
Check out your flight options from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL). This is the only airport in St. Louis you can fly into if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute bookings from LAX to STL are usually more expensive. To lock in the lowest rates, start looking for flights early. That being said, if you’re flexible with your travel plans, you may find a cheap ticket right before your trip.
Is it cheaper to book a LAX to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a LAX to STL flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL)?
Generally, it’s possible to reschedule or cancel your LAX to STL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find further details on our Customer Service portal.

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