http://www.nps.gov/glac/parknews/news10-21.htm
Unfortunately, the dates are different in many cases than are posted at their detailed campground availability/status site here (click on individual campground for dates):
http://home.nps.gov/applications/glac/c ... status.cfm
This is the most recent information from the first link above.....
Apgar, May 7 - Oct. 11 $20
Primitive camping April 1 - May 6 and Oct. 12 - Nov. 30 (Picnic Area) *Winter camping Dec. 1 - Mar. 31 (Picnic Area)
Avalanche, June 11 -Sept. 6 $20
Bowman Lake, May 28 - Sept. 12 $15
Primitive camping prior to May 28 and beginning Sept. 13 (weather dependent)*
Cut Bank, May 28 - Sept. 6 $10
Operated in primitive status all season
Fish Creek (Reservations), June 1 - Sept. 6** $23
National Recreation Reservation System campground
Kintla Lake, May 28 - Sept. 12 $15
Primitive camping prior to May 28 and beginning Sept. 13 (weather dependent) *
Logging Creek, July 1 - Sept. 28 $10
Operated in primitive status all season*
Many Glacier, May 28 - Sept. 19 $20
Primitive Sept. 20 - Oct. 31 (weather dependent )*
Quartz Creek, July 1 - Nov. 30, $10
Operated in primitive status all season* (End of season date weather dependent)
Rising Sun, May 28 - Sept. 13 $20
Sprague Creek, May 14 - Sept. 13, $20
St. Mary (Reservations), June 1 - Sept. 5** $23
St. Mary, May 28 - Sept. 19*** $20
Primitive camping April 1 - May 20 and Sept. 19 - Nov. 30* First come, first serve May 21 - 31 and Sept. 6 - 19** Winter camping Dec. 1 - March 31
Two Medicine, May 28 - Sept. 19 $20
Primitive camping Sept. 20 - Oct. 31 (weather dependent)*