Route
PDX → IAH
Portland International Airport George Bush Intercontinental Airport
1,825 miles
Return route IAH → PDX →
How punctual is this route?
- On-time arrivals
- 86.6%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,208
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 39%
- Late-arriving aircraft 32%
- Air traffic control & airport 28%
- Security 1%
- Extreme weather 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 92.7% | 96 |
| October 2025 | 81.2% | 118 |
| November 2025 | 80.9% | 90 |
| December 2025 | 88.6% | 105 |
| January 2026 | 90.3% | 94 |
| February 2026 | 90.0% | 80 |
| March 2026 | 86.5% | 91 |
| April 2026 | 92.2% | 91 |
| May 2026 | 85.7% | 119 |
| June 2026 | 84.3% | 115 |
| July 2026 | 75.0% | 117 |
| August 2026 | 96.7% | 92 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 855 | 87.1% | 0.4% | 84 min |
| Alaska Airlines | 353 | 85.4% | 0.8% | 50 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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