Airports › Bozeman (BZN) › December 2025
Airport month · December 2025
Bozeman Yellowstone International in December 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 December 2025, reporting carriers scheduled 941 domestic departures from Bozeman Yellowstone International (BZN). 73.4% left less than 15 minutes late and 74.1% reached their destination on time; 1.0% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so BZN departures were 1.4 points above the national departure figure.
A year earlier, in December 2024, the airport had 791 departures with 83.4% leaving on time: a change of −10.0 points, with flights up 19%.
Flights arriving at BZN that month were on time 72.2% of the time (944 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 33% and national aviation system 20%.
- On time 74.1%
- Arrived 15+ minutes late 24.7%
- Cancelled 1.0%
- Diverted 0.3%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | BZN, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 73.4% | 83.4% | 79.6% | 72.0% |
| Arrived on time | 74.1% | 84.5% | 79.5% | 71.9% |
| Cancelled | 1.0% | 0.4% | 0.8% | 1.5% |
| Average departure delay (late minutes only) | 24.3 min | 17.8 min | 17.2 min | 21.2 min |
| Scheduled departures a day | 31 | 26 | 32 | 19,410 |
| Scheduled departures | 941 | 791 | 11,804 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 241 | 26% | 70.5% | 14.4 min | 0.4% |
| OO SkyWest Airlines | 222 | 24% | 75.7% | 7.9 min | 1.4% |
| DL Delta Air Lines | 176 | 19% | 77.8% | 5.5 min | 1.1% |
| WN Southwest Airlines | 135 | 14% | 79.3% | 4.3 min | 0.7% |
| AS Alaska Airlines | 60 | 6% | 71.7% | 14.1 min | 1.7% |
| AA American Airlines | 55 | 6% | 67.3% | 36.9 min | 0.0% |
| G4 Allegiant Air | 24 | 3% | 70.8% | 45.0 min | 0.0% |
| B6 JetBlue Airways | 14 | 1% | 64.3% | 115.8 min | 7.1% |
| MQ Envoy Air | 14 | 1% | 64.3% | 4.3 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BZN–DEN | Bozeman to Denver | 231 | 75.3% | 6.1 min | 1.7% |
| BZN–SEA | Bozeman to Seattle | 161 | 75.8% | 7.7 min | 1.2% |
| BZN–SLC | Bozeman to Salt Lake City | 90 | 86.7% | -9.6 min | 0.0% |
| BZN–ORD | Bozeman to Chicago | 83 | 67.5% | 31.5 min | 0.0% |
| BZN–MSP | Bozeman to Minneapolis | 62 | 80.6% | 4.0 min | 1.6% |
| BZN–LAX | Bozeman to Los Angeles | 55 | 72.7% | 4.2 min | 0.0% |
| BZN–LAS | Bozeman to Las Vegas | 51 | 84.3% | 5.4 min | 0.0% |
| BZN–DFW | Bozeman to Dallas/Fort Worth | 43 | 69.8% | 5.5 min | 0.0% |
| BZN–ATL | Bozeman to Atlanta | 41 | 75.6% | 16.9 min | 0.0% |
| BZN–SFO | Bozeman to San Francisco | 31 | 64.5% | 61.2 min | 0.0% |
| BZN–BOS | Bozeman to Boston | 17 | 35.3% | 127.9 min | 11.8% |
| BZN–EWR | Bozeman to Newark | 16 | 68.8% | 26.0 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left BZN on time in December 2025?
73.4% of 941 scheduled domestic departures left less than 15 minutes late, and 74.1% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 83.4% of 791 departures left on time and 0.4% were cancelled, against 73.4% and 1.0% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 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.