IAH to RDU flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to Raleigh-Durham International Airport · 1,042 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or RDU right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (IAH) to Raleigh/Durham (RDU) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.2% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (84% on time); Frontier Airlines was the least (78%).
- Departures scheduled around 12pm did best (91% on time); around 5pm did worst (73%).
- Wednesday was the most reliable day to fly (89% on time) and Sunday the least (77%).
- The largest source of delay minutes was late-arriving aircraft (53%).
Which airline is most on time from IAH to RDU?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 84% | 0.9% | 11 min | 5.4% | 696 |
| Frontier Airlines | 78% | 2.2% | 20 min | 9.5% | 227 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 0% | 0.0% | 22 min | 0.0% | 1 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am89%28 flights
- 9am81%98 flights
- 11am92%26 flights
- 12pm91%294 flights
- 2pm65%27 flights
- 3pm71%18 flights
- 4pm79%34 flights
- 5pm73%32 flights
- 6pm77%349 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%2.1% cancelled
- Tuesday87%0.0% cancelled
- Wednesday89%0.0% cancelled
- Thursday83%0.0% cancelled
- Friday85%0.0% cancelled
- Saturday82%1.9% cancelled
- Sunday77%3.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft53%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion10%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather82%
- Airline (crew, maintenance, cleaning, fueling)18%
- Air traffic control & airport congestion0%
- Security0%
IAH to RDU: common questions
- How often are IAH to RDU flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Houston to Raleigh/Durham cancelled?
- 1.2% of scheduled flights were cancelled (11 of 924).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 71 min behind schedule on average, and 6.4% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: RDU to IAH — 85% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAH → RDU, nonstop flights by US airlines that report to the DOT. How we calculate this.