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

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

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Alternative airports near Los Alamos

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

Select flight to Santa Fe Municipal SAF. Cheapest option available. Average driving time to city center is 54 minutes. Flights from $359
SAF
Santa Fe Municipal
Cheapest
Average driving time to city center54 min
Flights from $359

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM) cost?
Snag a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM) 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 Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM)?
The cheapest month to fly from STL to LAM is , when there's less demand. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM)?
To find the cheapest airline flying from STL to LAM, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to LAM?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM)?
To arrive at Los Alamos County Airport (LAM) without delays, opt for a flight that leaves from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM) last-minute?
Last-minute bookings from STL to LAM are generally more expensive. To lock in the cheapest rates, start looking for flights as early as possible. That being said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a STL to LAM flight and hotel package?
Opting for a STL to LAM flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our wide range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Los Alamos County Airport (LAM)?
Usually, it's possible to reschedule or cancel your STL to LAM 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 allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

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

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St. Louis to Los Alamos Flights

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

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

 

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

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

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 St. Louis to Los Alamos 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 St. Louis to Los Alamos 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 St. Louis to Los Alamos 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.

 

St. Louis to Los Alamos Flights

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