Most delayed flights from BOI: every route ranked

17 regularly flown nonstop routes from Boise Air Terminal/Gowen Field, 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	BOI → SFO San Francisco, CA	68%	0.5%	26 min	2	1,716
2	BOI → ORD Chicago, IL	75%	1.2%	23 min	4	1,111
3	BOI → SAN San Diego, CA	81%	0.6%	11 min	3	1,028
4	BOI → DFW Dallas/Fort Worth, TX	81%	3.1%	22 min	1	802
5	BOI → LAS Las Vegas, NV	81%	0.2%	12 min	5	1,363
6	BOI → DEN Denver, CO	82%	0.1%	15 min	4	3,033
7	BOI → PHX Phoenix, AZ	84%	0.4%	13 min	5	2,014
8	BOI → OAK Oakland, CA	84%	0.0%	10 min	1	554
9	BOI → ATL Atlanta, GA	85%	1.5%	12 min	1	545
10	BOI → SMF Sacramento, CA	85%	0.1%	9 min	1	860
11	BOI → SEA Seattle, WA	85%	0.4%	9 min	2	3,761
12	BOI → BUR Burbank, CA	86%	0.2%	8 min	2	430
13	BOI → SJC San Jose, CA	86%	0.2%	9 min	2	658
14	BOI → MSP Minneapolis, MN	87%	0.5%	11 min	1	783
15	BOI → SLC Salt Lake City, UT	91%	1.0%	8 min	2	1,740
16	BOI → PDX Portland, OR	91%	0.6%	6 min	2	1,084
17	BOI → LAX Los Angeles, CA	93%	0.2%	6 min	2	1,373

Less frequent routes

Too few flights for a reliable ranking.

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.