Route Reliability
Raleigh–Durham → Houston
RDU–IAH · 1,042 miles · Raleigh–Durham International Airport to George Bush Intercontinental Airport
- 84%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 1.4%
- Cancelled
- 1,238
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines86%1,054 flights
- 2.Frontier Airlines70%184 flights
What the data says
Morning flights do better here.
RDU–IAH flights departing between 6–9 AM arrived on time 93% of the time, versus 63% between 6–9 PM.
Sunday scaries are real for this one.
RDU–IAH flights arrived on time 91% of the time on Tuesdays. On Sundays: 80%.
United Airlines has a clear lead on this route.
United Airlines arrived on time 86% of the time on this route; Frontier Airlines managed 70%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon83%(181 flights)
- Tue91%(150 flights)
- Wed85%(149 flights)
- Thu80%(202 flights)
- Fri83%(187 flights)
- Sat86%(147 flights)
- Sun80%(199 flights)
- 6–9 AM93%(361 flights)
- 9 AM–12 PM81%(75 flights)
- 12–3 PM88%(331 flights)
- 3–6 PM77%(358 flights)
- 6–9 PM63%(90 flights)
Jun 70% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 91 |
| July 2025 | 66% | 98 |
| August 2025 | 83% | 100 |
| September 2025 | 94% | 100 |
| October 2025 | 88% | 112 |
| November 2025 | 78% | 102 |
| December 2025 | 82% | 106 |
| January 2026 | 89% | 93 |
| February 2026 | 91% | 92 |
| March 2026 | 85% | 106 |
| April 2026 | 91% | 103 |
| May 2026 | 84% | 112 |
Same trip, other airports
Keep nerding
Based on 1,238 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.