What is the CTAF frequency at 3U4?

Saint Labre Mission Airport's CTAF frequency is 122.8.

Saint Labre Mission Airport frequencies

Radio frequencies for Saint Labre Mission Airport (3U4) in Ashland, MT — tower, ground, ATIS, CTAF, and approach/departure for your radio setup.

CTAF	122.8
UNICOM	122.8

Frequencies from FAA NASR. For planning and education only; always verify against official sources.