In 2018 the National Park Service will offer nine fee-free days.
- January 15: Martin Luther King Jr. Day
- April 21: First day of National Park Week
- September 22: National Public Lands Day
- November 11: Veterans Day
Fee waiver includes: entrance fees, commercial tour fees, and transportation entrance fees.
Other fees such as reservation, camping, tour, concession, and fees collected by third parties are not included unless stated otherwise.