Best Time to Fly ORD to SEA
Chicago to Seattle — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
ORD → SEA on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 1,161 |
| February | 1% | 0% | 1,070 |
| March | 1% | 0% | 1,324 |
| April | 1% | 0% | 1,653 |
| May | 1% | 0% | 1,997 |
| June | 1% | 0% | 2,203 |
| July | 1% | 0% | 2,356 |
| August | 1% | 0% | 1,717 |
| September | 1% | 0% | 1,490 |
| October | 1% | 0% | 1,363 |
| November | 1% | 0% | 1,109 |
| December | 1% | 0% | 1,085 |
Frequently asked
What is the best month to fly from ORD to SEA?
January has the highest on-time rate at 1% for flights from Chicago to Seattle.
What is the worst month to fly ORD to SEA?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are ORD to SEA flights delayed?
On average, 1% of flights from ORD to SEA arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.