Cheap Flights from Los Alamos (LAM) to St. Louis (STL)

Popular airlines from Los Alamos, NM (LAM-Los Alamos County) to St. Louis Lambert Intl. Airport (STL)

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Frequently asked questions

How much does a flight from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL) cost?
Lock in a cheap one-way flight or cheap return flight from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL)?
is the most affordable month to fly from LAM to STL. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LAM to STL flight.
How many flights per day from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL) 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 pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LAM to STL?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, such as the time of year and airline.*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 Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Later flights have a 22% higher chance of cancellation.**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.
Is it cheaper to buy a plane ticket from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your trip to book a ticket from LAM to STL often results in higher prices. While you might find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary to maximize your chances of snagging a bargain.
Is it cheaper to book a LAM to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a LAM to STL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place takes the hassle out of travel planning. Just pick your flights and choose from our extensive range of stays, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Los Alamos County Airport (LAM) to Lambert-St. Louis Intl. Airport (STL)?
You can usually cancel or reschedule your LAM to STL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Los Alamos County
Destination airport
Lambert-St. Louis Intl.
Distance
895 mi

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Los Alamos to St. Louis Flights

The cheapest times to fly from Los Alamos 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 Alamos to St. Louis are during the month of . You can find some of the cheapest flights from Los Alamos to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Los Alamos 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 Alamos 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 Alamos to St. Louis in 2026. 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 Alamos 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 Alamos 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 Alamos to St. Louis Flights

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*Available to One Key members.