Route Reliability
Houston → Raleigh–Durham
IAH–RDU · 1,042 miles · George Bush Intercontinental Airport to Raleigh–Durham International Airport
- 85%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.2%
- 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 Airlines75%184 flights
What the data says
Morning flights do better here.
IAH–RDU flights departing between 6–9 AM arrived on time 92% of the time, versus 75% between 3–6 PM.
Sunday scaries are real for this one.
IAH–RDU flights arrived on time 89% of the time on Wednesdays. On Sundays: 81%.
United Airlines runs this route best.
United Airlines arrived on time 86% of the time on this route; Frontier Airlines managed 75%.
Slipping a little lately.
IAH–RDU flights arrived on time 83% of the time over the last three months in the data, compared with 87% in the three months before that.
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%(183 flights)
- Tue88%(152 flights)
- Wed89%(151 flights)
- Thu83%(203 flights)
- Fri87%(187 flights)
- Sat84%(145 flights)
- Sun81%(201 flights)
- 6–9 AM92%(321 flights)
- 9 AM–12 PM85%(81 flights)
- 12–3 PM86%(384 flights)
- 3–6 PM75%(83 flights)
- 6–9 PM79%(353 flights)
Jun 72% → May 85% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 96 |
| July 2025 | 74% | 101 |
| August 2025 | 86% | 100 |
| September 2025 | 93% | 100 |
| October 2025 | 92% | 113 |
| November 2025 | 87% | 102 |
| December 2025 | 80% | 106 |
| January 2026 | 92% | 92 |
| February 2026 | 89% | 92 |
| March 2026 | 78% | 106 |
| April 2026 | 86% | 103 |
| May 2026 | 85% | 111 |
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.