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Airport · 12 months to July 2026
Bozeman Yellowstone International: delays and on-time record
Bozeman, Montana
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. Data through July 2026; this is a monthly history, not live airport status.
Reporting carriers scheduled 11,804 domestic departures from Bozeman Yellowstone International (BZN), Bozeman, in the 12 months to July 2026: about 32 a day to 28 destinations.
79.6% of those flights left the gate less than 15 minutes late, 3.5 points above the national departure figure of 76.1%. Flights arriving at BZN were on time 78.0% of the time, 2.0 points above the national arrival figure of 76.0%.
0.8% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 17.2 min.
United Airlines is the largest reporting carrier at BZN with 26% of departures. Among carriers with at least 120 departures, Delta Air Lines had the highest on-time arrival share for its BZN departures (87.5%) and JetBlue Airways the lowest (65.5%).
On-time departures are about level with the previous 12 months (79.7%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving BZN, late-arriving aircraft 34%, air carrier 31% and national aviation system 27%.
- On time 79.5%
- Arrived 15+ minutes late 19.3%
- Cancelled 0.8%
- Diverted 0.4%
As origin and as destination, against the nation
| Measure | Departures from BZN | Arrivals at BZN | All reported flights | BZN departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 79.6% | 79.3% | 76.1% | 79.7% |
| Arrived on time | 79.5% | 78.0% | 76.0% | 78.0% |
| Cancelled | 0.8% | 0.7% | 1.8% | 0.6% |
| Diverted | 0.4% | 0.4% | 0.3% | 0.4% |
| Average departure delay (late minutes only) | 17.2 min | 12.6 min | 17.4 min | 17.3 min |
| Arrival delay minutes per 100 flights | 1,692 | 1,280 | 1,684 | 1,800 |
| Scheduled flights | 11,804 | 11,804 | 7,043,858 | 10,329 |
12 months to July 2026. The first column follows flights that left BZN; the second follows flights that landed there. Year on year, on-time departures moved −0.1 pts.
Airlines at BZN
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 3,053 | 26% | 78.0% | 5.8 min | 0.8% |
| OO SkyWest Airlines | 2,337 | 20% | 82.9% | 3.2 min | 0.5% |
| DL Delta Air Lines | 2,011 | 17% | 87.5% | -2.1 min | 0.9% |
| WN Southwest Airlines | 1,894 | 16% | 76.9% | 5.9 min | 0.2% |
| AA American Airlines | 1,269 | 11% | 69.4% | 22.5 min | 1.6% |
| AS Alaska Airlines | 623 | 5% | 82.0% | -0.4 min | 1.1% |
| G4 Allegiant Air | 341 | 3% | 79.5% | 10.4 min | 0.6% |
| B6 JetBlue Airways | 235 | 2% | 65.5% | 31.7 min | 5.1% |
| MQ Envoy Air | 41 | 0% | 75.6% | 10.4 min | 0.0% |
Departures from BZN by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 79.5%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from BZN
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BZN–DEN | Bozeman to Denver | 2,722 | 76.8% | 5.1 min | 0.4% |
| BZN–SEA | Bozeman to Seattle | 1,573 | 83.8% | 0.4 min | 0.6% |
| BZN–ORD | Bozeman to Chicago | 1,267 | 72.2% | 14.8 min | 1.1% |
| BZN–SLC | Bozeman to Salt Lake City | 1,162 | 89.4% | -1.4 min | 0.5% |
| BZN–MSP | Bozeman to Minneapolis | 805 | 89.4% | -4.6 min | 0.7% |
| BZN–DFW | Bozeman to Dallas/Fort Worth | 713 | 72.5% | 21.4 min | 2.1% |
| BZN–LAS | Bozeman to Las Vegas | 598 | 82.9% | 2.0 min | 0.3% |
| BZN–LAX | Bozeman to Los Angeles | 543 | 88.2% | -5.6 min | 0.0% |
| BZN–ATL | Bozeman to Atlanta | 429 | 84.1% | 0.3 min | 1.4% |
| BZN–SFO | Bozeman to San Francisco | 378 | 70.4% | 17.0 min | 0.0% |
| BZN–EWR | Bozeman to Newark | 375 | 72.0% | 13.4 min | 2.4% |
| BZN–BOS | Bozeman to Boston | 207 | 62.3% | 43.6 min | 4.3% |
| BZN–AZA | Bozeman to Phoenix | 150 | 72.0% | 20.6 min | 0.0% |
| BZN–BNA | Bozeman to Nashville | 122 | 87.7% | -1.0 min | 0.0% |
| BZN–MDW | Bozeman to Chicago | 120 | 85.8% | 2.4 min | 0.0% |
The 15 busiest of 28 routes with reported flights. Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 236 departures, 5 am to 6 am had the highest on-time share (94.0% of 619 flights) and 4 pm to 5 pm the lowest (67.8% of 1,197).
Delay causes
Cancellations by reported reason (98 in the period): air carrier 31%, weather 56%, national aviation system 13%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for BZN on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave BZN on time?
79.6% of the 11,804 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 0.8% were cancelled.
How often do flights arrive at BZN on time?
78.0% of 11,804 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at BZN?
Counting departures from BZN and whether they reached their destination on time, Delta Air Lines had the highest share (87.5% of 2,011 flights), then SkyWest Airlines (82.9%) and Alaska Airlines (82.0%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at BZN?
For departures from BZN that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: late-arriving aircraft 34%, air carrier 31%, national aviation system 27%, extreme weather 8%, security 0%.
What time of day has the highest on-time share at BZN?
Departures scheduled from 5 am to 6 am local time left on time 94.0% of the time, the highest of any hour with enough flights to compare; 4 pm to 5 pm was lowest at 67.8%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 79.6%, about level with the previous 12 months (79.7%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at BZN?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.