BZN · Bozeman Yellowstone International Airport
Bozeman, MT. 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 | 1,379 | 27.4% | +3.5 | 1.2% | 22 | Air traffic |
| Jun 2026 | 1,258 | 23.6% | +3.6 | 0.6% | 20 | Late aircraft |
| May 2026 | 849 | 17.6% | +1.0 | 0.7% | 13 | Airline |
| Apr 2026 | 717 | 15.7% | -0.1 | 0.3% | 15 | Airline |
| Mar 2026 | 1,020 | 22.5% | +5.0 | 1.3% | 24 | Airline |
| Feb 2026 | 848 | 18.5% | -1.5 | 0.7% | 14 | Airline |
| Jan 2026 | 890 | 15.0% | -7.9 | 1.2% | 11 | Late aircraft |
| Dec 2025 | 941 | 25.9% | +9.6 | 1.0% | 24 | Late aircraft |
| Nov 2025 | 660 | 13.2% | -0.5 | 2.1% | 17 | Late aircraft |
| Oct 2025 | 861 | 12.6% | +0.2 | 0.3% | 8 | Airline |
| Sep 2025 | 1,081 | 13.7% | +0.2 | 0.3% | 10 | Air traffic |
| Aug 2025 | 1,300 | 21.8% | +3.7 | 0.5% | 20 | Air traffic |
| Jul 2025 | 1,330 | 26.5% | +3.3 | 0.8% | 22 | Air traffic |
| Jun 2025 | 1,129 | 24.4% | +5.7 | 0.2% | 20 | Late aircraft |
| May 2025 | 720 | 18.4% | +4.1 | 1.0% | 14 | Air traffic |
| Apr 2025 | 568 | 16.0% | +4.3 | 1.1% | 16 | Late aircraft |
| Mar 2025 | 928 | 17.5% | -0.0 | 0.2% | 14 | Air traffic |
| Feb 2025 | 752 | 26.0% | +6.0 | 0.8% | 25 | Air traffic |
| Jan 2025 | 781 | 24.6% | +3.1 | 1.7% | 29 | Airline |
| Dec 2024 | 791 | 16.2% | +0.1 | 0.4% | 18 | Airline |
| Nov 2024 | 587 | 14.2% | +0.6 | 0.7% | 13 | Airline |
| Oct 2024 | 729 | 11.1% | -1.5 | 0.1% | 7 | Airline |
| Sep 2024 | 902 | 12.3% | -1.2 | 0.0% | 7 | Late aircraft |
| Aug 2024 | 1,112 | 21.2% | +3.1 | 0.8% | 18 | Late aircraft |
Airlines here, Apr 2026 (departures)
| Airline | Flights | Late | Canc. |
|---|---|---|---|
| Alaska | 34 | 2.9% | 0.0% |
| SkyWest | 170 | 11.2% | 0.0% |
| Delta | 150 | 13.3% | 0.0% |
| United | 165 | 17.7% | 0.6% |
| Southwest | 125 | 18.4% | 0.0% |
| American | 48 | 25.5% | 2.1% |
Airlines with 30+ departures that month.
Worst days on record
| Date | Flights | Late | Canc. |
|---|---|---|---|
| 2021-07-18 | 52 | 50% | 12% |
| 2021-07-25 | 52 | 54% | 4% |
| 2026-07-11 | 56 | 47% | 2% |
| 2021-07-31 | 57 | 46% | 2% |
| 2021-06-27 | 51 | 42% | 6% |
| 2026-06-13 | 52 | 44% | 0% |
| 2021-07-01 | 50 | 42% | 4% |
| 2026-06-20 | 55 | 37% | 2% |
| 2021-06-26 | 53 | 37% | 2% |
| 2021-07-17 | 57 | 34% | 2% |
| 2026-07-18 | 55 | 29% | 7% |
| 2021-07-22 | 53 | 33% | 2% |
Departures; ranked by share late or cancelled.
FAA programs, last 90 days
None recorded.