Route
DTW → IAD
Detroit Metropolitan Wayne County Airport Washington Dulles International Airport
How punctual is this route?
- On-time arrivals
- 77.0%
- Less than 15 minutes late
- Cancelled
- 1.1%
- Of scheduled flights
- Average delay when late
- 88 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,198
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 68%
- Air traffic control & airport 16%
- Extreme weather 9%
- Late-arriving aircraft 6%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.6% | 79 |
| October 2025 | 84.3% | 89 |
| November 2025 | 68.6% | 35 |
| December 2025 | 59.5% | 75 |
| January 2026 | 52.3% | 90 |
| February 2026 | 63.6% | 78 |
| March 2026 | 62.4% | 128 |
| April 2026 | 89.0% | 109 |
| May 2026 | 83.3% | 145 |
| June 2026 | 85.7% | 120 |
| July 2026 | 78.7% | 123 |
| August 2026 | 88.9% | 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 | 690 | 69.9% | 1.2% | 92 min |
| Republic Airways | 270 | 85.8% | 1.1% | 66 min |
| Delta Air Lines | 199 | 87.3% | 1.0% | 84 min |
| United Airlines | 39 | 87.2% | 0.0% | 137 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO3988
30% late · 116 flights
-
DL1787
17% late · 104 flights
-
YX3500
9% late · 82 flights
-
OO3776
26% late · 81 flights
-
DL2884
8% late · 74 flights
-
OO3939
50% late · 62 flights
-
OO3971
37% late · 62 flights
-
OO3910
25% late · 60 flights
-
OO3788
22% late · 58 flights
-
OO4038
2% late · 40 flights
-
OO3868
31% late · 36 flights
-
OO3960
50% late · 36 flights
-
OO3849
3% late · 31 flights
-
OO3878
0% late · 24 flights
-
YX3518
26% late · 24 flights
-
DL955
10% late · 21 flights
-
YX3404
30% late · 21 flights
-
YX3485
5% late · 21 flights
-
UA1265
20% late · 20 flights
-
YX3548
40% late · 20 flights
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