Airport reliability
Bozeman (BZN) on-time performance
How reliably flights leave Bozeman, MT (BZN) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Bozeman, MT11,791 departures in 12 months
- Departures on time
- 79.3% U.S. average 75.6%
- Cancelled
- 0.8% U.S. average 1.9%
- 60+ minutes late
- 7.4% U.S. average 8.1%
- Scheduled departures
- 11,791 12 months
What this means
BZN departures beat the U.S. average.
- 79.3% of the 11,791 scheduled departures from Bozeman (BZN) arrived at their destination on time, 3.7 points higher than the U.S. average of 75.6%.
- 0.8% of departures were cancelled (U.S. average 1.9%), and 7.4% arrived an hour or more late.
- Flights arriving at BZN were on time 77.3% of the time.
- Among airlines with at least 300 departures, Delta Air Lines was the most punctual from BZN (88.2%) and American Airlines the least (70.5%).
- Over the last 3 years, November was the most reliable month for departures from BZN (86.3% on time) and July the least reliable (71.4%).
- Cancellations peaked in January, when 2.0% of flights were cancelled.
- Flights scheduled to depart 6 am to 7 am were the most punctual (93.3% on time); flights scheduled to depart 4 pm to 5 pm were the least (65.7%).
Airlines at BZN
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| Delta Air Lines | 88.2% | 0.9% | 4.3% | 94 min | 2,020 |
| Alaska Airlines | 83.0% | 1.2% | 5.6% | 65 min | 641 |
| SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska | 82.5% | 0.5% | 5.3% | 74 min | 2,264 |
| Allegiant Air | 79.1% | 0.6% | 6.5% | 107 min | 340 |
| United Airlines | 77.9% | 0.7% | 9.5% | 84 min | 3,094 |
| Southwest Airlines | 75.5% | 0.2% | 6.9% | 59 min | 1,915 |
| American Airlines | 70.5% | 1.5% | 11.3% | 103 min | 1,241 |
| JetBlue Airways | 59.6% | 5.5% | 17.4% | 126 min | 235 |
| Envoy AirSold as American Eagle | Insufficient sample | 41 | |||
Tap a heading to sort.
On-time rate by departure hour
Share of scheduled flights on time BZN average 79.3%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 93.1% | 568 |
| Departing 6 am to 7 am | 93.3% | 980 |
| Departing 7 am to 8 am | 88.3% | 806 |
| Departing 8 am to 9 am | 84.7% | 457 |
| Departing 9 am to 10 am | Insufficient sample | 45 |
| Departing 10 am to 11 am | 86.9% | 778 |
| Departing 11 am to noon | 81.6% | 1,062 |
| Departing noon to 1 pm | 75.7% | 1,040 |
| Departing 1 pm to 2 pm | 72.7% | 1,217 |
| Departing 2 pm to 3 pm | 74.1% | 1,309 |
| Departing 3 pm to 4 pm | 80.1% | 1,241 |
| Departing 4 pm to 5 pm | 65.7% | 1,216 |
| Departing 5 pm to 6 pm | 74.2% | 388 |
| Departing 6 pm to 7 pm | 74.4% | 390 |
| Departing 7 pm to 8 pm | 73.1% | 242 |
| Departing 8 pm to 9 pm | Insufficient sample | 36 |
| Departing 9 pm to 10 pm | Insufficient sample | 5 |
| Departing 10 pm to 11 pm | Insufficient sample | 11 |
Best and worst months at BZN
Share of scheduled flights on time 12-month average 79.3%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 76.8% | 2,512 |
| February | 75.9% | 2,401 |
| March | 79.2% | 2,826 |
| April | 82.9% | 1,928 |
| May | 81.6% | 2,288 |
| June | 77.0% | 3,423 |
| July | 71.4% | 3,873 |
| August | 73.9% | 3,699 |
| September | 85.5% | 2,792 |
| October | 85.3% | 2,280 |
| November | 86.3% | 1,838 |
| December | 81.4% | 2,545 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 86.1% | 1,081 |
| Oct 2025 | 86.1% | 861 |
| Nov 2025 | 84.1% | 660 |
| Dec 2025 | 74.1% | 941 |
| Jan 2026 | 83.6% | 890 |
| Feb 2026 | 83.1% | 848 |
| Mar 2026 | 76.7% | 1,020 |
| Apr 2026 | 83.3% | 717 |
| May 2026 | 82.0% | 849 |
| Jun 2026 | 77.7% | 1,258 |
| Jul 2026 | 72.3% | 1,379 |
| Aug 2026 | 72.0% | 1,287 |
Busiest routes from BZN
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Denver (DEN) | 76.8% | 0.4% | 3 | 2,704 |
| Seattle (SEA) | 83.4% | 0.6% | 2 | 1,565 |
| Chicago (ORD) | 72.2% | 0.9% | 4 | 1,251 |
| Salt Lake City (SLC) | 89.2% | 0.5% | 2 | 1,160 |
| Minneapolis (MSP) | 90.6% | 0.7% | 1 | 807 |
| Dallas/Fort Worth (DFW) | 74.6% | 2.0% | 1 | 710 |
| Las Vegas (LAS) | 82.3% | 0.3% | 2 | 599 |
| Los Angeles (LAX) | 88.6% | 0.0% | 2 | 527 |
| Atlanta (ATL) | 84.7% | 1.4% | 1 | 437 |
| San Francisco (SFO) | 68.0% | 0.0% | 2 | 378 |
| Newark (EWR) | 71.2% | 2.4% | 1 | 375 |
| Boston (BOS) | 59.4% | 4.8% | 2 | 207 |
| Phoenix (AZA) | 71.8% | 0.0% | 1 | 149 |
| Nashville (BNA) | 88.5% | 0.0% | 3 | 122 |
| Chicago (MDW) | 83.3% | 0.0% | 1 | 120 |
| San Diego (SAN) | 59.1% | 0.9% | 2 | 115 |
| New York (JFK) | 58.3% | 6.5% | 2 | 108 |
| Phoenix (PHX) | 71.9% | 0.0% | 1 | 89 |
| Portland (PDX) | 88.5% | 1.1% | 2 | 87 |
| Charlotte (CLT) | 68.4% | 0.0% | 1 | 76 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Bozeman, MT (BZN) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.