Helena Regional Airport

General Aviation Airport Fact Sheet 
Helena Regional Airport (KHLN) 
2540 Airport Road, Helena, MT 59602
Regular Office Hours 
Monday-Friday, 0900-1700 
Mountain Time (MT) 
 
 
  
 
 
 
 
Contact Information 
(406) 449-5506   CBP Airport Office
(406) 335-9628   CBP Sweetgrass, MT Command Center - 24 hours 
KHLN_GAP@cbp.dhs.gov
Hours of Service for Entrance 
and Clearance 
Inspection services for the entrance/
arrival of aircraft at Helena Regional 
Airport are available Monday-Friday, 
0900-1700 (MT) in accordance with 
the port's permission to land 
procedures.
Commercial aircraft operators 
departing the U.S. must obtain an 
outbound clearance by contacting 
CBP directly. 
Permission to Land Procedures 
Pilots must secure permission to land by contacting CBP 
prior to departure from the foreign port or place and at least 
2 hours in advance of the anticipated arrival time at KHLN. 
Permission to land is granted with a tolerance of (+/-) 30 
minutes. If your ETA deviates outside these parameters, 
previously granted permission(s) are invalid and you must 
contact CBP to re-secure permission to land.  
Inspection Process 
• All inspections will be conducted on the CBP ramp unless prior arrangements for off-site clearance
are approved by CBP.
• The CBP ramp is located on the south side of the airport; the tower can direct you if needed.
• Please taxi to the ramp located in front of the CBP facility and park in the designated area.
• A CBP Officer will meet the aircraft on the ramp to begin the inspection.
• All passengers should be prepared to de-plane and be processed inside the CBP facility.
• Be prepared to present passports, visas, pilot’s license, medical certificate, aircraft registration, and
user fee decal (if appropriate).
• Regulated garbage handling must be coordinated through one of the FBOs.
Special Procedures/Miscellaneous 
• Effective November 17th, 2024, all flights requesting permission to land outside of normal operating hours will be
required to utilize an individual or third-party Reimbursable Services Agreement (RSP) to compensate CBP for
the overtime cost to clear the flight.
• Please contact the on-duty CBP Officer in Helena to inquire about after-hours clearance procedures.
• After the inspection is complete, FBO services available at KHLN and can fuel/service aircraft on the CBP ramp.
• FBOs will not approach the CBP ramp until a CBP Officer has signaled the inspection is complete.
• KHLN FBO Services: Exec Air (406) 442-2190.
NOTE: For further detailed information regarding national GA processing standards and procedures, 
please refer to the CBP Private Aircraft Arrival Information Document or contact GAsupport@cbp.dhs.gov 
October 31, 2025 Publication Number KHLN-1025 
Helena Regional Airport