Big Southern Butte Airport
U46 has 1 runway. The longest is 1/19 at 2,600 ft × 110 ft (dirt).
FAA NASR data, cycle 2026-09-03
U46 field elevation is 5,073 ft MSL. The standard traffic pattern altitude at U46 is 6,070 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.9 MHz — U46 is non-towered; self-announce position and intentions on CTAF.
Check U46 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, U46 is a non-towered airport. The CTAF frequency is 122.9 MHz.
U46 has 1 runway (1/19). The longest runway is 2,600 feet.
U46 uses the standard traffic pattern altitude of 1,000 feet AGL — about 6,070 feet MSL at a field elevation of 5,073 feet.
U46 (Big Southern Butte Airport) has a field elevation of 5,073 feet MSL.
U46 (Big Southern Butte Airport) is located in Blackfoot, ID.