Bozeman Yellowstone International (BZN) Delays and On-Time Departures
Bozeman, MT · ranked 178th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
80.3% of the 11,804 flights scheduled to depart Bozeman (BZN) in the last 12 months left on time, 2.9 points above the US average of 77.4%.
That ranks 178th of 333 US airports tracked on this site, with 0.8% of departures cancelled.
Among airlines at Bozeman (BZN), Delta Air Lines left on time most often (87.0%).
Over 24 months, Wednesday was the most reliable day (84% on time) and July the worst month (73%).
Best time of day to fly out of Bozeman (BZN)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.7% | 0.2% | 1,284 |
| 6am–7am | 94.3% | 0.5% | 1,472 |
| 7am–8am | 92.3% | 0.5% | 1,743 |
| 8am–9am | 92.9% | 1.0% | 510 |
| 9am–10am | 92.2% | 0.0% | 154 |
| 10am–11am | 83.9% | 0.5% | 1,501 |
| 11am–12pm | 80.7% | 1.1% | 1,945 |
| 12pm–1pm | 78.7% | 1.1% | 1,896 |
| 1pm–2pm | 75.6% | 0.5% | 2,538 |
| 2pm–3pm | 73.9% | 1.1% | 2,655 |
| 3pm–4pm | 78.1% | 0.8% | 2,240 |
| 4pm–5pm | 70.2% | 0.5% | 2,110 |
| 5pm–6pm | 68.9% | 1.1% | 788 |
| 6pm–7pm | 80.0% | 0.7% | 743 |
| 7pm–8pm | 68.0% | 0.8% | 479 |
| 8pm–9pm | 54.9% | 0.0% | 51 |
| 9pm–10pm | Limited data | 4 | |
| 10pm–11pm | Limited data | 20 | |
Airlines at BZN ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 87.0% | 88.4% | 0.9% | 2,011 |
| SkyWest Airlines | 86.7% | 83.5% | 0.5% | 2,337 |
| Alaska Airlines | 83.6% | 83.1% | 1.1% | 623 |
| Allegiant Air | 81.4% | 80.2% | 0.6% | 341 |
| United Airlines | 79.9% | 79.2% | 0.8% | 3,053 |
| Envoy Air | 78.0% | 75.6% | 0.0% | 41 |
| Southwest Airlines | 73.7% | 77.2% | 0.2% | 1,894 |
| American Airlines | 69.8% | 70.9% | 1.6% | 1,269 |
| JetBlue | 63.2% | 69.7% | 5.1% | 235 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of BZN
On-time departures by day, 24 months.
Best month to fly out of BZN
On-time departures by month, 24 months.
Holiday travel at Bozeman (BZN)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 80.7% | -2.1 pts | 0.7% | 297 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.8% | -11.0 pts | 0.6% | 1,100 |
| Summer peak (Jun 15 - Aug 15) | 74.6% | -8.2 pts | 0.8% | 5,257 |
| All other days | 82.8% | — | 0.7% | 15,479 |
Monthly on-time departure trend at BZN
On-time departure % each month, with the 12-month US average for reference.
Routes from Bozeman (BZN)
Every route from BZN with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| BZN → Denver (DEN) | 77.4% | 0.4% | 2,722 |
| BZN → Seattle (SEA) | 84.5% | 0.6% | 1,573 |
| BZN → Chicago (ORD) | 73.5% | 1.1% | 1,267 |
| BZN → Salt Lake City (SLC) | 89.9% | 0.5% | 1,162 |
| BZN → Minneapolis (MSP) | 90.2% | 0.8% | 805 |
| BZN → Dallas/Fort Worth (DFW) | 74.4% | 2.1% | 713 |
| BZN → Las Vegas (LAS) | 83.2% | 0.3% | 598 |
| BZN → Los Angeles (LAX) | 88.2% | 0.0% | 543 |
| BZN → Atlanta (ATL) | 85.8% | 1.4% | 429 |
| BZN → San Francisco (SFO) | 70.4% | 0.0% | 378 |
| BZN → Newark (EWR) | 75.8% | 2.4% | 375 |
| BZN → Boston (BOS) | 65.2% | 4.3% | 207 |
| BZN → Phoenix (AZA) | 72.5% | 0.0% | 150 |