Best Time to Fly BZN to SEA: On-Time Stats by Hour & Airline
Bozeman Yellowstone International → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 84.5% of Bozeman (BZN) to Seattle (SEA) flights arrived on time (1,573 scheduled flights). That is 6.9 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 85.4%, while Alaska Airlines trailed at 83.1%.
April has been the best month (90% on time) and Sunday the weakest day of the week (78%).
0.6% of flights were cancelled, versus 1.8% nationally.
BZN to SEA on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 85.4% | 68 min | 0.2% | 949 |
| Alaska Airlines | 83.1% | 62 min | 1.1% | 623 |
| Delta Air Lines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BZN to SEA
On-time arrival % by scheduled departure hour (local time), 2,224 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 97.7% | 1.1% | 87 |
| 7am–8am | 93.6% | 0.0% | 502 |
| 8am–9am | 92.0% | 0.9% | 114 |
| 11am–12pm | 85.0% | 0.9% | 114 |
| 12pm–1pm | 80.3% | 0.0% | 71 |
| 1pm–2pm | Limited data | 15 | |
| 2pm–3pm | 75.5% | 2.9% | 172 |
| 3pm–4pm | 80.3% | 0.5% | 583 |
| 4pm–5pm | 65.0% | 0.0% | 160 |
| 5pm–6pm | 86.7% | 0.0% | 120 |
| 6pm–7pm | 61.3% | 0.0% | 62 |
| 7pm–8pm | 63.5% | 1.8% | 224 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BZN to SEA
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 31 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.4% | -7.4 pts | 0.0% | 107 |
| Summer peak (Jun 15 - Aug 15) | 75.8% | -8.0 pts | 0.6% | 540 |
| All other days | 83.8% | — | 0.7% | 1,546 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).