Most delayed flights from LWS: every route ranked

2 regularly flown nonstop routes from Lewiston Nez Perce County 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	LWS → SEA Seattle, WA	90%	0.3%	8 min	1	364
2	LWS → SLC Salt Lake City, UT	93%	0.0%	9 min	1	365

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.