A city skyline with a prominent arch bridge at sunset.

$142 Cheap Flights from Los Angeles (LAX) to St. Louis (STL)

View $142 flight on Tue, Oct 13, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $142 for one-way flights and $284 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Nov 3 - Wed, Nov 4
LAX
Los Angeles
STL
St. Louis
$284 Roundtrip, found 1 hour ago
$284
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Nov 3 from Los Angeles to St. Louis, returning Wed, Nov 4, priced at $284 found 1 hour ago
Frontier Airlines
Tue, Nov 3 - Wed, Nov 4
LAX
Los Angeles
STL
St. Louis
$289 Roundtrip, found 1 hour ago
$289
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Nov 3 from Los Angeles to St. Louis, returning Wed, Nov 4, priced at $289 found 1 hour ago
Frontier Airlines
Tue, Nov 3 - Wed, Nov 4
LAX
Los Angeles
STL
St. Louis
$294 Roundtrip, found 1 hour ago
$294
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Nov 3 from Los Angeles to St. Louis, returning Wed, Nov 4, priced at $294 found 1 hour ago
Frontier Airlines
Sat, Nov 7 - Sun, Nov 8
LAX
Los Angeles
STL
St. Louis
$299 Roundtrip, found 1 hour ago
$299
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Nov 7 from Los Angeles to St. Louis, returning Sun, Nov 8, priced at $299 found 1 hour ago
Frontier Airlines
Fri, Oct 30 - Sat, Oct 31
LAX
Los Angeles
STL
St. Louis
$304 Roundtrip, found 1 hour ago
$304
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Oct 30 from Los Angeles to St. Louis, returning Sat, Oct 31, priced at $304 found 1 hour ago
Frontier Airlines
Wed, Sep 2 - Sat, Sep 12
LAX
Los Angeles
STL
St. Louis
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Sep 2 from Los Angeles to St. Louis, returning Sat, Sep 12, priced at $307 found 1 day ago
Southwest Airlines
Sat, Oct 3 - Sat, Oct 10
LAX
Los Angeles
STL
St. Louis
$316 Roundtrip, found 14 hours ago
$316
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Sat, Oct 3 from Los Angeles to St. Louis, returning Sat, Oct 10, priced at $316 found 14 hours ago
United
Tue, Oct 20 - Wed, Oct 21
LAX
Los Angeles
STL
St. Louis
$321 Roundtrip, found 1 hour ago
$321
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 20 from Los Angeles to St. Louis, returning Wed, Oct 21, priced at $321 found 1 hour ago
American Airlines
Tue, Sep 1 - Thu, Sep 3
LAX
Los Angeles
STL
St. Louis
$357 Roundtrip, found 7 hours ago
$357
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Sep 1 from Los Angeles to St. Louis, returning Thu, Sep 3, priced at $357 found 7 hours ago
Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
LAX
Los Angeles
STL
St. Louis
$367 Roundtrip, found 5 hours ago
$367
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Wed, Oct 21 from Los Angeles to St. Louis, returning Sat, Oct 24, priced at $367 found 5 hours ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $490
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $490

Find the cheapest month to fly from Los Angeles (LAX) to St. Louis (STL)

September is typically the cheapest month to fly

From $248 - $304 per traveler.

What you need to know for your flight from Los Angeles Intl. to Lambert-St. Louis Intl.

Los Angeles (LAX) to St. Louis (STL) at a glance

Embark on your journey from Los Angeles International Airport (LAX) to Lambert-St. Louis International Airport (STL) with a range of airlines available for this domestic short-haul route. Explore various options, including both full-service and budget-friendly carriers, to discover the best itinerary that aligns with your schedule and budget. Whether you’re looking to enjoy the vibrant sights and neighborhoods of St. Louis or just need a straightforward trip, you'll find all the essential details regarding Los Angeles to St. Louis flights right here.

  • Fastest flight duration: around 3h 30m non-stop
  • Route distance: roughly 1,600 miles (2,570 km)
  • Flights per week: around 30+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $120–$450, depending on seasonality and how far ahead you book

Flights from Los Angeles International Airport (LAX) to Lambert-St. Louis International Airport (STL)

Explore the top airlines frequently chosen by travelers flying from Los Angeles to St. Louis, focusing on non-stop and one-stop options. Popular layover points include Denver International Airport (DEN) with an average layover of about 1 hour and 15 minutes, Harry Reid International Airport (LAS) at approximately 1 hour and 30 minutes, and Sky Harbor International Airport (PHX) with a 1-hour layover. These choices allow you to tailor your itinerary by balancing price, total travel time, and cabin class to find the perfect flight.

  • Southwest Airlines: This budget-friendly airline provides both non-stop and one-stop options, with one-way ticket prices usually between $140 and $440. Southwest operates around 47% of flights on this route, with a standard non-stop travel duration of 3 hours and 30 minutes.
  • American Airlines: A comprehensive service provider, American Airlines offers non-stop and one-stop flights with one-way fares typically falling within the $140 to $490 range. It makes up about 25% of the departures on this route, also featuring a usual non-stop flight time of 3 hours and 30 minutes.
  • United: This full-service airline provides both non-stop and one-stop services, with one-way fares generally ranging from $155 to $490. United accounts for roughly 14% of departures on this route, with a standard one-stop flight duration of 4 hours and 45 minutes, totaling around 6 hours for the journey.
  • Delta: As a full-service option, Delta offers one-stop flights with one-way fares typically spanning $150 to $505. It represents about 6% of the departures on this route, with an in-flight time of 4 hours and 45 minutes and an overall journey time of about 6 hours, including layovers.
  • Frontier Airlines: This low-cost airline specializes in one-stop services, with one-way fares usually between $120 and $250. Frontier operates approximately 5% of departures on this route, featuring an in-flight duration of 4 hours and 45 minutes, culminating in a total journey time of around 6 hours, including layover periods.

Travelers flying from Los Angeles to St. Louis have the option to upgrade their flight. Top airlines offering first-class service include American Airlines, United, and Delta, each providing exceptional seating and amenities.

Best time to fly from Los Angeles (LAX) to St. Louis (STL)

The most popular months for travelers flying from Los Angeles to St. Louis are March, April, and July, when peak temperatures in St. Louis reach up to 78.6°F in July. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 70.9°F. For better deals, October usually offers the lowest average one-way fare around $218. Flight availability peaks in July, with approximately 41 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 22 flights per week.

  • Cheapest time to fly: October usually offers good deals with average one-way fare around $218, roughly 13% cheaper than the yearly average.
  • More budget-friendly months to fly: September and August typically offer average one-way fares of around $223.
  • Most flight options: July has the highest number of flights from Los Angeles to St. Louis, with approximately 41 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)Average27$270
February34.9°F (1.6°C)Average22$247
March46.4°F (8.0°C)Slightly High30$281
April56.1°F (13.4°C)Slightly High31$292
May66.6°F (19.2°C)Average34$255
June76.1°F (24.5°C)Average36$285
July78.6°F (25.9°C)Slightly High41$244
August77.0°F (25.0°C)Average36$227
September70.9°F (21.6°C)Slightly Low35$219
October58.6°F (14.8°C)Average30$218
November46.2°F (7.9°C)Slightly Low29$242
December37.8°F (3.2°C)Slightly Low34$241

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Los Angeles (LAX) to St. Louis (STL)

  • Burbank to St. Louis (BUR-STL): Hollywood Burbank Airport (BUR) is located approximately 18 miles from Los Angeles International Airport (LAX). On this route, one-way economy tickets generally fall within the range of $130 to $465, influenced by the time of year and when you make your reservation. Travelers can choose from both non-stop and one-stop flights, with common layover airports being Denver International Airport (DEN) and Phoenix Sky Harbor International Airport (PHX). Leading airlines operating on this route include Southwest Airlines, a budget-friendly option, and United. Additionally, first-class service is available for those seeking a more premium experience.

How to find the best prices for flights from Los Angeles (LAX) to St. Louis (STL)

Getting some of the best deals on flights from Los Angeles to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures from 6 PM to 12 AM tend to offer lower prices, although morning flights from 5 AM to 12 PM are the most popular. Additionally, flying on Wednesday generally provides better prices, while Thursday is the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Los Angeles International Airport

St. Louis welcomes travelers from Los Angeles with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is located just 0.1 miles away on foot, providing easy access to public transportation.

Frequently asked questions

How much does a flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $142 and cheap return flights from $284 Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights generally range between $194 and $1099, and roundtrip flights usually range from $360 to $1384. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
September is the cheapest month to fly from Los Angeles, CA (LAX) to St. Louis, MO (STL), with average round-trip fares around $368. This is about 12% lower than the average price throughout the year, as September is often a quieter travel month. Other cheap months to fly from LAX to STL include February and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
American Airlines offers around 9 weekly direct flights from LAX to STL.
What is the cheapest airline that flies from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
American Airlines is one of the cheapest airlines offering nonstop flights from Los Angeles Intl. (LAX) to Lambert-St. Louis Intl. (STL), with round-trip tickets starting from around $380. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Los Angeles, CA (LAX) to St. Louis, MO (STL) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. American Airlines offers the most daily flights from LAX to STL, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly from Los Angeles, CA (LAX) to St. Louis, MO (STL) is in September or February. These months feature average return flight prices around $368, making them the most economical choices for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 3 nonstop flights per day from Los Angeles Intl. (LAX) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
What is the earliest flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) usually departs at around 12:05 AM, operated by United. This seasonal service is available in June, July, and August, giving you a head start on your travels. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
For flights from Los Angeles, CA (LAX) to St. Louis, MO (STL), the most popular departure times are in the early morning, from 6am to 9am. This accounts for around 23% of total traffic. Many major carriers, including American Airlines, United Airlines, and Southwest Airlines, offer flights during this window. This timing is favored as it allows travelers to arrive in St. Louis with a full day ahead of them.
How long does it take to fly from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying nonstop from LAX to STL takes around 3 hours 30 minutes, with the route covering approximately 1,589 miles. Flights with a layover typically take 3 hours 30 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class is available on flights from LAX to STL. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines
  • Spirit Airlines

How much is a business class flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A direct, return business class ticket from Los Angeles (LAX) to St. Louis (STL) typically costs between $1,574 - $1,953. A non-stop, one-way business class flight is usually around $991 - $1,190. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Los Angeles Intl. (LAX)?
If you're planning to travel to St. Louis from Los Angeles Intl. (LAX), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like Harry Reid Intl. (LAS), Sky Harbor Intl. (PHX), Denver Intl. (DEN) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Los Angeles, CA (LAX-Los Angeles Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Los Angeles Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$284
Distance
1588 mi
Average flight time
5 hours 34 mins

Book with confidence

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 November. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $142 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.

 

Los Angeles to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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