Route
IAD → RDU
Washington Dulles International Airport Raleigh-Durham International Airport
How punctual is this route?
- On-time arrivals
- 83.1%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,275
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 39%
- Late-arriving aircraft 33%
- Air traffic control & airport 16%
- Extreme weather 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.8% | 140 |
| October 2025 | 85.6% | 119 |
| November 2025 | 82.9% | 118 |
| December 2025 | 76.7% | 120 |
| January 2026 | 89.7% | 93 |
| February 2026 | 85.6% | 91 |
| March 2026 | 76.3% | 115 |
| April 2026 | 87.6% | 113 |
| May 2026 | 90.2% | 112 |
| June 2026 | 78.6% | 86 |
| July 2026 | 66.2% | 86 |
| August 2026 | 86.4% | 82 |
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 | 1,078 | 83.3% | 1.2% | 74 min |
| Republic Airways | 197 | 82.3% | 2.0% | 85 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1322
22% late · 224 flights
-
UA1357
13% late · 178 flights
-
UA2382
25% late · 178 flights
-
UA1348
13% late · 126 flights
-
UA1536
5% late · 108 flights
-
UA1370
17% late · 73 flights
-
YX3624
30% late · 71 flights
-
UA529
26% late · 47 flights
-
YX3515
2% late · 45 flights
-
UA1685
13% late · 31 flights
-
UA635
8% late · 24 flights
-
UA1206
5% late · 22 flights
-
UA336
20% late · 21 flights
Reviews
No reviews yet. Be the first to review this route.