$685 Cheap Flights from St. Louis (STL) to Las Cruces (LRU)

View $685 flight on Sat, Nov 15, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.)

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Cheap Flights from St. Louis to Las Cruces (STL-LRU)

Prices were available within the past 7 days and start at $685 for one-way flights and $1,105 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Nov 19 - Fri, Nov 21
STL
St. Louis
LRU
Las Cruces
$1,105 Roundtrip, found 3 days ago
$1,105
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Nov 19 from St. Louis to Las Cruces, returning Fri, Nov 21, priced at $1,105 found 3 days ago
Alaska Airlines
Thu, Nov 20 - Fri, Nov 21
STL
St. Louis
LRU
Las Cruces
$1,116 Roundtrip, found 3 days ago
$1,116
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 20 from St. Louis to Las Cruces, returning Fri, Nov 21, priced at $1,116 found 3 days ago
Alaska Airlines
Wed, Nov 19 - Thu, Nov 27
STL
St. Louis
LRU
Las Cruces
$1,131 Roundtrip, found 3 days ago
$1,131
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Nov 19 from St. Louis to Las Cruces, returning Thu, Nov 27, priced at $1,131 found 3 days ago
Alaska Airlines
Wed, Nov 19 - Sun, Nov 23
STL
St. Louis
LRU
Las Cruces
$1,136 Roundtrip, found 3 days ago
$1,136
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Nov 19 from St. Louis to Las Cruces, returning Sun, Nov 23, priced at $1,136 found 3 days ago
Alaska Airlines
Thu, Nov 20 - Thu, Nov 27
STL
St. Louis
LRU
Las Cruces
$1,142 Roundtrip, found 3 days ago
$1,142
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 20 from St. Louis to Las Cruces, returning Thu, Nov 27, priced at $1,142 found 3 days ago
Alaska Airlines
Thu, Nov 20 - Sun, Nov 23
STL
St. Louis
LRU
Las Cruces
$1,147 Roundtrip, found 3 days ago
$1,147
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 20 from St. Louis to Las Cruces, returning Sun, Nov 23, priced at $1,147 found 3 days ago
Alaska Airlines
Sat, Nov 22 - Thu, Nov 27
STL
St. Louis
LRU
Las Cruces
$1,191 Roundtrip, found 3 days ago
$1,191
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Nov 22 from St. Louis to Las Cruces, returning Thu, Nov 27, priced at $1,191 found 3 days ago
Alaska Airlines
Tue, Nov 18 - Fri, Nov 21
STL
St. Louis
LRU
Las Cruces
$1,210 Roundtrip, found 3 days ago
$1,210
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Nov 18 from St. Louis to Las Cruces, returning Fri, Nov 21, priced at $1,210 found 3 days ago
Alaska Airlines
Tue, Nov 18 - Sun, Nov 23
STL
St. Louis
LRU
Las Cruces
$1,241 Roundtrip, found 3 days ago
$1,241
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Nov 18 from St. Louis to Las Cruces, returning Sun, Nov 23, priced at $1,241 found 3 days ago
Alaska Airlines
Wed, Nov 19 - Mon, Nov 24
STL
St. Louis
LRU
Las Cruces
$1,390 Roundtrip, found 3 days ago
$1,390
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Nov 19 from St. Louis to Las Cruces, returning Mon, Nov 24, priced at $1,390 found 3 days ago
Alaska Airlines
Thu, Nov 20 - Mon, Nov 24
STL
St. Louis
LRU
Las Cruces
$1,401 Roundtrip, found 3 days ago
$1,401
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Thu, Nov 20 from St. Louis to Las Cruces, returning Mon, Nov 24, priced at $1,401 found 3 days ago

Alternative airports near Las Cruces

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

Select flight to Las Cruces Intl. LRU. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $1,142
LRU
Las Cruces Intl.
CheapestClosest
Average driving time to city center13 min
Flights from $1,142

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.) cost?
Secure a cheap one-way flight from $685 or cheap return flight from $1,105 from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.)?
The cheapest month to fly from STL to LRU is November, when there's less demand. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to LRU flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.)?
There are no daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to LRU?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, season and other factors.*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 Las Cruces, NM (LRU-Las Cruces Intl.)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.) route, aim to travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**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 Las Cruces, NM (LRU-Las Cruces Intl.) last-minute?
Last-minute fares from STL to LRU are generally more expensive. To lock in the cheapest rates, start looking for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to land a cheap ticket right before your trip.
Is it cheaper to book a STL to LRU flight and hotel package?
You can save money by securing a STL to LRU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Las Cruces, NM (LRU-Las Cruces Intl.)?
Typically, you can cancel or modify your STL to LRU flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want further information, head to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Las Cruces Intl.
Roundtrip price
$1,104
Distance
1030 mi

Book with confidence

St. Louis to Las Cruces Flights

The cheapest times to fly from St. Louis to Las Cruces

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

 

The best time to book a flight from St. Louis to Las Cruces

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

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 Las Cruces in 2025. You can also book with separate airlines for your outbound and return journeys, from $685 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 Las Cruces 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 Las Cruces 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 Las Cruces Flights

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*Available to One Key members.