Best Time to Fly IDA to SEA: On-Time Stats by Hour & Airline
Idaho Falls Regional → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.8% of Idaho Falls (IDA) to Seattle (SEA) flights arrived on time (366 scheduled flights). That is 6.2 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
June has been the best month (90% on time) and Thursday the weakest day of the week (77%).
0.3% of flights were cancelled, versus 1.8% nationally.
IDA 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 | 83.8% | 44 min | 0.3% | 366 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IDA to SEA
On-time arrival % by scheduled departure hour (local time), 366 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 84.1% | 0.8% | 127 |
| 7am–8am | 94.2% | 0.0% | 52 |
| 1pm–2pm | 85.0% | 0.0% | 80 |
| 2pm–3pm | Limited data | 12 | |
| 3pm–4pm | 86.4% | 0.0% | 44 |
| 4pm–5pm | Limited data | 21 | |
| 5pm–6pm | 63.3% | 0.0% | 30 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IDA 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 | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -5.9 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 89.4% | +6.8 pts | 0.0% | 94 |
| All other days | 82.5% | — | 0.4% | 230 |
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).