HELENA, Mont. (AP) - A Wyoming-based airline plans to resume Essential Air Service to the Montana towns of Lewistown and Sidney in early September.

Great Lakes Aviation says reports last week that it was renewing service to Miles City on Sept. 3 were incorrect.

Spokeswoman Monica Taylor says the U.S. Department of Transportation has given the airline permission to renew service in Miles City, with flights to Denver, but that the company doesn't have enough airplanes to do so yet.

Great Lakes says its schedule for Lewistown includes two flights to and from Denver each weekday, with one each on Saturday and Sunday, beginning on Sept. 3. Sidney will have two flights to and from Denver each day.

Taylor says the company will be adding Sidney to Billings service as well as Miles City to Denver service at a later date.