Route
IAD → DTW
Washington Dulles International Airport Detroit Metropolitan Wayne County Airport
How punctual is this route?
- On-time arrivals
- 78.4%
- Less than 15 minutes late
- Cancelled
- 1.3%
- Of scheduled flights
- Average delay when late
- 110 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,178
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 65%
- Extreme weather 13%
- Air traffic control & airport 12%
- Late-arriving aircraft 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 91.0% | 78 |
| October 2025 | 93.3% | 89 |
| November 2025 | 69.4% | 36 |
| December 2025 | 55.7% | 61 |
| January 2026 | 61.2% | 84 |
| February 2026 | 66.2% | 78 |
| March 2026 | 66.7% | 128 |
| April 2026 | 85.5% | 110 |
| May 2026 | 87.3% | 144 |
| June 2026 | 83.8% | 120 |
| July 2026 | 76.2% | 123 |
| August 2026 | 84.1% | 127 |
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 |
|---|---|---|---|---|
| SkyWest Airlines | 689 | 77.2% | 1.2% | 131 min |
| Republic Airways | 251 | 78.0% | 1.6% | 74 min |
| Delta Air Lines | 199 | 82.7% | 1.5% | 87 min |
| United Airlines | 39 | 79.5% | 0.0% | 53 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO3826
15% late · 117 flights
-
DL1787
24% late · 104 flights
-
OO3776
21% late · 81 flights
-
DL2884
9% late · 74 flights
-
OO3931
24% late · 62 flights
-
OO3939
48% late · 62 flights
-
OO3796
7% late · 59 flights
-
YX3495
26% late · 47 flights
-
YX3643
30% late · 45 flights
-
OO4038
2% late · 40 flights
-
OO3868
40% late · 36 flights
-
OO3888
25% late · 36 flights
-
OO3910
23% late · 36 flights
-
YX3502
12% late · 35 flights
-
OO3849
6% late · 31 flights
-
OO3878
12% late · 24 flights
-
OO3905
4% late · 24 flights
-
DL955
14% late · 21 flights
-
UA2265
24% late · 21 flights
-
YX3494
19% late · 21 flights
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