Best Time to Fly PWM to ORD
Portland to Chicago — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
PWM → ORD on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0% | 137 |
| February | 1% | 0% | 164 |
| March | 1% | 0% | 285 |
| April | 1% | 0% | 349 |
| May | 1% | 0% | 411 |
| June | 1% | 0% | 507 |
| July | 1% | 0% | 557 |
| August | 1% | 0% | 467 |
| September | 1% | 0% | 422 |
| October | 1% | 0% | 408 |
| November | 1% | 0% | 221 |
| December | 1% | 0% | 175 |
Frequently asked
What is the best month to fly from PWM to ORD?
January has the highest on-time rate at 1% for flights from Portland to Chicago.
What is the worst month to fly PWM to ORD?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are PWM to ORD flights delayed?
On average, 1% of flights from PWM to ORD arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.