BOI · Boise Air Terminal/Gowen Field
Boise, ID. All airports.
Share of flights 15+ min late, by month
departures
arrivals
usual for the month (departures)
Jan 2015 → Jul 2026; gridlines 10/20/30/40%
Recent months — departures
| 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 |
Airlines here, May 2026 (departures)
| Airline | Flights | Late | Canc. |
|---|---|---|---|
| Alaska | 193 | 11.9% | 0.0% |
| Delta | 234 | 14.1% | 0.0% |
| Envoy | 31 | 16.1% | 0.0% |
| SkyWest | 919 | 16.3% | 0.1% |
| United | 124 | 20.3% | 0.8% |
| American | 104 | 27.7% | 2.9% |
| Southwest | 415 | 30.8% | 0.0% |
Airlines with 30+ departures that month.
Worst days on record
| 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.
FAA programs, last 90 days
None recorded.