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

Popular airlines from Los Angeles Intl. (LAX) to St. Louis, MO (CPS-St. Louis Downtown)

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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 $247
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $247

Frequently asked questions

How much does a flight from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS) cost?
Get a cheap one-way flight or cheap return flight from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS)?
Traveling in is a good way to save, as it's the cheapest month for flights between LAX and CPS. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest LAX to CPS flight.
How many flights per day from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS)?
Nonstop flights from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LAX to CPS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS)?
To land at St. Louis Downtown Airport (CPS) without delays, choose a flight that leaves from Los Angeles Intl. Airport (LAX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 East St. Louis from Los Angeles Intl. Airport (LAX)?
Browse your flight options from Los Angeles Intl. Airport (LAX) to Lambert-St. Louis Intl. Airport (STL). This is the only airport in East St. Louis you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS) last-minute?
Waiting until just before your trip to book your flight from LAX to CPS often results in higher prices. Although you may find some last-minute offers, there's no guarantee. Be flexible with your itinerary to boost your chances of landing a bargain.
Is it cheaper to book a LAX to CPS flight and hotel package?
Compared with arranging flights and hotels separately, booking a LAX to CPS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Just pick your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Los Angeles Intl. Airport (LAX) to St. Louis Downtown Airport (CPS)?
If you booked your LAX to CPS flight in 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 want more information.

Travel information

Origin airport
Los Angeles Intl.
Destination airport
St. Louis Downtown
Distance
1599 mi

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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 . 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 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

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