Route
RDU → IAH
Raleigh-Durham International Airport George Bush Intercontinental Airport
1,042 miles
Return route IAH → RDU →
How punctual is this route?
- On-time arrivals
- 85.9%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 92 min
- Flights arriving 15+ minutes late
- Flights tracked
- 943
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Air traffic control & airport 31%
- Airline (crew, maintenance, cleaning) 22%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.2% | 74 |
| October 2025 | 84.1% | 83 |
| November 2025 | 75.0% | 79 |
| December 2025 | 81.8% | 77 |
| January 2026 | 89.9% | 73 |
| February 2026 | 90.0% | 71 |
| March 2026 | 83.8% | 100 |
| April 2026 | 90.4% | 73 |
| May 2026 | 86.8% | 76 |
| June 2026 | 83.3% | 66 |
| July 2026 | 83.1% | 84 |
| August 2026 | 90.8% | 87 |
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 | 696 | 89.1% | 0.9% | 86 min |
| Frontier Airlines | 246 | 76.8% | 2.0% | 99 min |
| SkyWest Airlines | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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