BOI · Boise Air Terminal/Gowen Field

Share of flights 15+ min late, by month

departures arrivals usual for the month (departures) Jan 2015 → Jul 2026; gridlines 10/20/30/40%

Month	Flights	Late 15+	vs usual	Cancelled	Avg min	Main cause
Jul 2026	2,070	20.3%	+4.8	0.2%	14	Air traffic
Jun 2026	2,002	21.7%	+4.7	0.6%	16	Late aircraft
May 2026	2,040	19.5%	+6.7	0.2%	14	Late aircraft
Apr 2026	1,946	14.7%	+2.5	0.4%	12	Airline
Mar 2026	2,027	14.3%	+2.7	1.0%	11	Airline
Feb 2026	1,781	11.4%	-0.5	0.1%	10	Airline
Jan 2026	1,910	12.1%	-2.7	0.8%	10	Airline
Dec 2025	2,012	17.8%	+0.2	0.6%	13	Late aircraft
Nov 2025	1,956	14.5%	+3.7	1.4%	16	Late aircraft
Oct 2025	2,008	12.8%	+2.1	0.2%	10	Airline
Sep 2025	1,924	13.2%	+2.8	0.4%	10	Late aircraft
Aug 2025	2,025	14.9%	+0.7	0.2%	11	Late aircraft
Jul 2025	2,136	17.0%	+2.7	0.6%	12	Late aircraft
Jun 2025	2,074	17.1%	+1.8	0.6%	12	Late aircraft
May 2025	1,993	12.8%	-0.1	0.2%	9	Air traffic
Apr 2025	1,927	12.2%	+0.8	0.0%	9	Late aircraft
Mar 2025	1,947	14.3%	+2.7	0.1%	10	Airline
Feb 2025	1,683	15.1%	+3.3	0.7%	12	Airline
Jan 2025	1,839	12.8%	-1.9	0.5%	8	Airline
Dec 2024	1,971	17.6%	+1.7	0.9%	13	Late aircraft
Nov 2024	1,957	10.8%	-1.3	0.5%	9	Airline
Oct 2024	1,991	9.8%	-1.7	0.1%	8	Airline
Sep 2024	2,038	14.0%	+3.7	0.1%	9	Airline
Aug 2024	2,097	15.1%	+0.9	0.4%	10	Airline

Airline	Flights	Late	Canc.
American	64	6.2%	0.0%
Delta	251	7.6%	0.0%
SkyWest	979	9.0%	0.1%
Alaska	87	10.3%	0.0%
United	124	11.3%	0.0%
Southwest	418	12.0%	0.0%
Spirit	43	16.3%	0.0%

Airlines with 30+ departures that month.

Date	Flights	Late	Canc.
2025-11-21	70	79%	11%
2022-12-23	73	58%	29%
2021-02-13	51	54%	31%
2021-12-27	68	58%	16%
2022-12-25	66	56%	18%
2021-12-30	67	57%	9%
2021-12-28	61	54%	11%
2022-12-24	51	43%	27%
2021-12-29	63	53%	8%
2022-12-26	71	38%	25%
2022-12-27	67	38%	22%
2023-01-11	51	45%	4%

Departures; ranked by share late or cancelled.

None recorded.