On President's Day holiday weekend, February 14-16, 2015, Haleakalā National Park will waive entrance fees for all park visitors.
The National Park Service will also waive admission fees on five additional days in 2015 - April 18th and 19th (the first weekend of National Park Week); August 25th (the National Park Service's 99th birthday); September 26th (National Public Lands Day);and November 11th (Veterans Day).
National park passes that provide annual free or discounted admission (for active duty military members and their dependents, senior citizens, or people with permanent disabilities) are available on any day of the year.
Source: U.S. Department of the Interior, National Park Service