K5U1 → KGTF
Dutton Airport → Great Falls Intl
26 NM
48 km — Great Circle Distance
International Route — Permits may be required
Arrival at KGTF
Port of entry: clear customs and immigration here
Source: 19 CFR 122.13 List of international airports, 2026-10-13
Customs available per FAA NASR data
All airports of entry in this country →
Fuel
K5U1
Not listed