Route · IAD → RDU · 2020–2025 BTS data
Washington to Raleigh/Durham
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAD to RDU (Washington to Raleigh/Durham) ranks #2058 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.4%
- On-time
- +5.4 pts
- vs US avg
- 71 min
- Delay when late
- 6,042
- Flights
- #2058 of 4927
- Corpus placement
Cancelled
1.1%
Best Month
Feb 2024 99%
Worst Month
Sep 2024 72%
Distance
224 mi
Carriers
10
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 120 | 28 | 0 | 0 | YX,UA |
| Nov 2025 | 118 | 20 | 1 | 0 | UA,YX |
| Oct 2025 | 119 | 17 | 0 | 1 | UA,YX |
| Sep 2025 | 140 | 17 | 1 | 0 | UA,YX |
| Aug 2025 | 107 | 14 | 1 | 0 | YX,UA |
| Jul 2025 | 79 | 12 | 4 | 0 | UA,YX |
| Jun 2025 | 127 | 35 | 3 | 0 | UA,YX |
| May 2025 | 143 | 40 | 2 | 2 | UA,YX |
| Apr 2025 | 89 | 11 | 0 | 0 | UA,YX |
| Mar 2025 | 72 | 6 | 0 | 0 | YX,UA |
| Feb 2025 | 42 | 8 | 0 | 0 | UA,YX |
| Jan 2025 | 69 | 9 | 4 | 0 | YX,UA |
| Dec 2024 | 88 | 10 | 0 | 0 | UA,YX |
| Nov 2024 | 114 | 9 | 0 | 0 | YX,UA |
| Oct 2024 | 72 | 4 | 0 | 0 | UA,YX |
| Sep 2024 | 60 | 17 | 0 | 1 | YX,UA |
| Aug 2024 | 62 | 16 | 1 | 0 | YX,UA |
| Jul 2024 | 66 | 10 | 5 | 0 | UA,YX |
| Jun 2024 | 53 | 12 | 0 | 0 | UA |
| May 2024 | 74 | 13 | 0 | 1 | UA |
| Apr 2024 | 69 | 8 | 0 | 0 | UA |
| Mar 2024 | 89 | 7 | 0 | 0 | YX,UA |
| Feb 2024 | 74 | 1 | 1 | 0 | UA,YX |
| Jan 2024 | 38 | 11 | 0 | 0 | YX,UA |
IAD–RDU seasonal on-time pattern
Best: October (90.5%) · weakest: August (76.4%)
Strongest calendar month
October
90.5% on-time · ~97 flights/mo
Busiest calendar month
October
~97 flights/mo avg
Weakest calendar month
August
76.4% on-time · ~93 flights/mo
Cancellation Rate
1.1%
23 of 2,084 flights
Diversion Rate
0.2%
5 of 2,084 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
IAD on-time profileRDU - Raleigh/Durham
Full on-time, delay-cause, and seasonal performance for Raleigh/Durham, NC.
RDU on-time profileCompare the two airports
See IAD and RDU side by side on delays, cancellations, and reliability.
Compare IAD vs RDUOrigin-hub reliability standing
Mid-pack among IAD departures
From IAD, this corridor sits with 42 other 75–85% on-time routes out of 58 tracked departures, not the hub's reliability leaders (14 at ≥85%) and not the softest ( 2 below 75%). Destination: Raleigh/Durham · fleet on-time rank #1431 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAD–RDU.
Routes with a similar on-time rate
What the Data Says About IAD to RDU
Bureau of Transportation Statistics records show Washington to Raleigh/Durham (IAD to RDU) running a 84.4% on-time rate over 6,042 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 70.5 minutes. The 224-mile corridor is served by 10 carriers, and over the last 24 months 1.1% of 2,084 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 99% on-time, while Sep 2024 came in at just 72% - a 27-point swing worth factoring into travel timing.
On the multi-year calendar, IAD–RDU peaks in October at 90.5% on-time ; the softest month is August at 76.4%, a 14.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does IAD to RDU rank among US routes by traffic? ▼
How often are flights delayed from IAD to RDU? ▼
What is the cancellation rate for IAD to RDU? ▼
How far is the flight from IAD to RDU? ▼
When is the best time to fly from IAD to RDU? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using IAD–RDU data
IAD–RDU runs 5.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare IAD and RDU airport profiles: delay causes and top routes differ even on the same corridor. IAD airport
- If your dates flex, October (90.5% on-time) beats August (76.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.4% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.