Federal transportation officials are considering ending air service to Miles City and Lewistown under the Essential Air Service program.
The Department of Transportation sent out notice March 28 that it may allow Silver Airways to suspend to the federally subsidized service to the eastern Montana communities.
The Miles City Star reports the 20-day comment period goes until April 17.
To be eligible for the federal program, the average subsidy per passenger must be less than $1,000 per.
In Lewistown, the per-passenger subsidy is $2,009 and in Miles City, it is $2,337.
If the agency's decision is finalized, it would take effect 30 to 45 days after the order.
Custer County Commissioner Vicki Hamilton says county leaders need all the support letters they can get to stop the service from ending.