Airports › Bozeman (BZN) › September 2025
Airport month · September 2025
Bozeman Yellowstone International in September 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In September 2025, reporting carriers scheduled 1,081 domestic departures from Bozeman Yellowstone International (BZN). 86.0% left less than 15 minutes late and 86.1% reached their destination on time; 0.3% were cancelled.
Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so BZN departures were 2.9 points above the national departure figure.
A year earlier, in September 2024, the airport had 902 departures with 87.7% leaving on time: a change of −1.7 points, with flights up 20%.
Flights arriving at BZN that month were on time 86.1% of the time (1,080 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 38%, air carrier 28% and late-arriving aircraft 26%.
- On time 86.1%
- Arrived 15+ minutes late 13.2%
- Cancelled 0.3%
- Diverted 0.4%
September 2025 against a year earlier, the airport's year and the nation
| Measure | Sep 2025 | Sep 2024 | BZN, 12 months to Jul 2026 | All reported flights, Sep 2025 |
|---|---|---|---|---|
| Departed on time | 86.0% | 87.7% | 79.6% | 83.1% |
| Arrived on time | 86.1% | 85.7% | 79.5% | 82.8% |
| Cancelled | 0.3% | 0.0% | 0.8% | 0.5% |
| Average departure delay (late minutes only) | 9.9 min | 7.2 min | 17.2 min | 12.2 min |
| Scheduled departures a day | 36 | 30 | 32 | 18,748 |
| Scheduled departures | 1,081 | 902 | 11,804 | 562,439 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 276 | 26% | 82.6% | 4.7 min | 0.0% |
| OO SkyWest Airlines | 222 | 21% | 91.4% | -7.2 min | 0.0% |
| WN Southwest Airlines | 197 | 18% | 82.2% | 4.9 min | 0.0% |
| AA American Airlines | 156 | 14% | 81.4% | 0.2 min | 1.9% |
| DL Delta Air Lines | 154 | 14% | 94.8% | -5.8 min | 0.0% |
| AS Alaska Airlines | 47 | 4% | 83.0% | 3.4 min | 0.0% |
| G4 Allegiant Air | 26 | 2% | 92.3% | -8.8 min | 0.0% |
| B6 JetBlue Airways | 3 | 0% | 66.7% | 2.3 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BZN–DEN | Bozeman to Denver | 237 | 78.9% | 7.5 min | 0.0% |
| BZN–SEA | Bozeman to Seattle | 137 | 89.8% | -7.9 min | 0.0% |
| BZN–ORD | Bozeman to Chicago | 133 | 76.7% | 5.5 min | 0.0% |
| BZN–SLC | Bozeman to Salt Lake City | 90 | 96.7% | -8.3 min | 0.0% |
| BZN–DFW | Bozeman to Dallas/Fort Worth | 82 | 89.0% | -7.9 min | 3.7% |
| BZN–MSP | Bozeman to Minneapolis | 67 | 91.0% | 7.0 min | 0.0% |
| BZN–LAS | Bozeman to Las Vegas | 55 | 85.5% | 3.0 min | 0.0% |
| BZN–EWR | Bozeman to Newark | 54 | 79.6% | 11.1 min | 0.0% |
| BZN–LAX | Bozeman to Los Angeles | 47 | 95.7% | -2.8 min | 0.0% |
| BZN–ATL | Bozeman to Atlanta | 30 | 100.0% | -22.3 min | 0.0% |
| BZN–MDW | Bozeman to Chicago | 30 | 93.3% | -0.9 min | 0.0% |
| BZN–PDX | Bozeman to Portland | 30 | 90.0% | -13.1 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left BZN on time in September 2025?
86.0% of 1,081 scheduled domestic departures left less than 15 minutes late, and 86.1% reached their destination on time. The national figures that month were 83.1% and 82.8%.
How does that compare with a year earlier?
In September 2024, 87.7% of 902 departures left on time and 0.0% were cancelled, against 86.0% and 0.3% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BZN · methodology · corrections.