Most delayed flights from BIL: every route ranked

4 regularly flown nonstop routes from Billings Logan International Airport, worst on-time record first (Aug 2025 – Jul 2026). Routes with fewer than 360 flights in the period are listed separately.

#	Destination	On time	Cancelled	Avg delay	Airlines	Flights
1	BIL → DEN Denver, CO	82%	0.7%	15 min	2	1,778
2	BIL → DFW Dallas/Fort Worth, TX	84%	0.6%	11 min	1	691
3	BIL → SLC Salt Lake City, UT	92%	0.6%	8 min	2	1,074
4	BIL → MSP Minneapolis, MN	92%	0.8%	10 min	1	365

Less frequent routes

Too few flights for a reliable ranking.

BIL → ORD (Chicago) 317 flts
BIL → AZA (Phoenix) 178 flts
BIL → LAS (Las Vegas) 129 flts
BIL → PHX (Phoenix) 110 flts

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.