L. M. Clayton Airport
L. M. Clayton Airport is a public airport three miles east of Wolf Point, in Roosevelt County, Montana. The airport is served by one airline, subsidized by the Essential Air Service program. Reportedly, it is smallest airport in the 48 contiguous states with scheduled air service.
The Federal Aviation Administration says this airport had 321 passenger boardings in calendar year 2008, 900 in 2009 and 494 in 2010. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation airport.
Scheduled air service temporarily ceased on March 8, 2008, when Big Sky Airlines ended operations in bankruptcy. Great Lakes Airlines was given USDOT approval to take over Essential Air Service and flights began in 2009. Service is currently provided under EAS contract by Cape Air.
The first airline flights were Frontier DC-3s in 1954-55; Frontier pulled out in 1980.
Facilities
L. M. Clayton Airport covers 290 acres at an elevation of 1,989 feet. Its one runway, 11/29, is 5,091 by 100 feet asphalt.In 2011 the airport had 5,975 aircraft operations, average 16 per day: 53% general aviation, 47% air taxi, and <1% military. Eight aircraft were then based at the airport, all with five or less engines.
Airline and destination
Statistics
| Rank | Airport | Passengers | Airline |
| 1 | Billings Logan International | 4,000 | Cape Air |