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

Popular airlines from Los Angeles Intl. (LAX) to St. Louis, MO (SUS-Spirit of St. Louis)

Find available prices by choosing your travel dates.
Flights from Los Angeles (LAX) to St. Louis (SUS)
Origin airport
Los Angeles Intl.
Destination airport
Spirit of St. Louis
Distance
1573 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 . 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.

Frequently asked questions

Is it cheaper to buy a plane ticket from Los Angeles Intl. Airport (LAX) to St. Louis Airport last minute?
Booking your journey from Los Angeles Intl. Airport (LAX) to SUS last minute could save you a nice sum if you get lucky and find a bargain. However, tickets don’t usually get cheaper as the date of departure nears. If you hold off, flights could also be booked up or the best seats long gone. If you’d rather not take any chances, book well in advance of your departure date. In fact, some of the best deals are available on Expedia up to 12 months in advance. If your favorite airline hasn’t released its fares yet, check back regularly as deals are updated on Expedia all the time.
What airports do you fly into for St. Louis from Los Angeles?
With Spirit of St. Louis Airport (SUS), Lambert-St. Louis Intl. Airport (STL) and St. Louis Downtown Airport (CPS) to select from, flying from Los Angeles to St. Louis is a breeze. The city’s major hub, Spirit of St. Louis Airport (SUS), is around 25 mi west of the center. As well as the price of fares, consider things like transportation options from the airport and the distance to your hotel before deciding where you’ll get off the plane. Get your St. Louis vacation off to a fun start by exploring Busch Stadium and Gateway Arch.
Can I change the date of my flight from Los Angeles Intl. Airport (LAX) to SUS?
Plans can get upended, so Expedia is here to help make things as simple as possible. To start, access your LAX to SUS itinerary through the Expedia Trips portal and check the fare rules and conditions regarding changes. If you purchased your airfare in the last 24 hours, some airlines will allow you to cancel for free and organize new flights. If you bought your fare more than 24 hours ago, connect with us through our Customer Service portal so we can assist you further.

Explore a world of travel with Expedia

*Available to One Key members.