Best Time to Fly SEA to BOI
Seattle to Boise — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
SEA → BOI on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,259 |
| February | 1% | 0% | 1,235 |
| March | 1% | 0% | 1,465 |
| April | 1% | 0% | 1,458 |
| May | 1% | 0% | 1,508 |
| June | 1% | 0% | 1,368 |
| July | 1% | 0% | 1,398 |
| August | 1% | 0% | 1,061 |
| September | 1% | 0% | 1,016 |
| October | 1% | 0% | 1,064 |
| November | 1% | 0% | 904 |
| December | 1% | 0% | 802 |
Frequently asked
What is the best month to fly from SEA to BOI?
January has the highest on-time rate at 1% for flights from Seattle to Boise.
What is the worst month to fly SEA to BOI?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are SEA to BOI flights delayed?
On average, 1% of flights from SEA to BOI arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.