Best Time to Fly PDX to IAH
Portland to Houston — month-by-month delay data from the Bureau of Transportation Statistics.
Best month
January
1% on time
Worst month
January
1% on time
PDX → IAH on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
Monthly breakdown
| Month | On-time | Cancel rate | Flights |
|---|---|---|---|
| January | 1% | 0.1% | 284 |
| February | 1% | 0% | 250 |
| March | 1% | 0% | 277 |
| April | 1% | 0% | 271 |
| May | 1% | 0% | 339 |
| June | 1% | 0% | 414 |
| July | 1% | 0% | 426 |
| August | 1% | 0% | 295 |
| September | 1% | 0% | 245 |
| October | 1% | 0% | 268 |
| November | 1% | 0% | 212 |
| December | 1% | 0% | 239 |
Frequently asked
What is the best month to fly from PDX to IAH?
January has the highest on-time rate at 1% for flights from Portland to Houston.
What is the worst month to fly PDX to IAH?
January has the lowest on-time rate at 1%, often due to winter weather.
How often are PDX to IAH flights delayed?
On average, 1% of flights from PDX to IAH arrive on time. That means about 99% experience some form of delay.
Source: Bureau of Transportation Statistics.