Detroit (DTW) to Dulles (IAD) flights

Mesa Airlines, Delta Air Lines, SkyWest Airlines, Republic Airline fly nonstop from Detroit Metropolitan Wayne County Airport to Washington Dulles International Airport, with about 45 flights a week in July 2026. The 383-mile flight takes about 1h 31m gate to gate.

From

DTW

Detroit

Detroit Metropolitan Wayne County Airport

IAD

Dulles

Washington Dulles International Airport

Distance: 383 mi · 616 km
Flight time: 1h 31m
Airlines: 4
Seats filled: 77%

Flights a week, July 2026

2,173 flights and 128,039 passengers in 12 months

Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying DTW to IAD

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
Mesa Airlines	18	Embraer E175	40,393	1h 31m
Delta Air Lines	12	Boeing 717-200, Airbus A319, Airbus A320-100/200	13,206	1h 26m
SkyWest Airlines	9	Bombardier CRJ900, Bombardier CRJ700, Bombardier CRJ550	37,792	1h 31m
Republic Airline	7	Embraer E175, Embraer E170	15,632	1h 32m
Endeavor AirSeasonal or ended	n/a	Bombardier CRJ900, Bombardier CRJ700	16,755	1h 32m
United AirlinesSeasonal or ended	n/a	Boeing 737-700 / MAX 7, Airbus A319, Airbus A320-100/200	3,483	1h 26m
GoJet AirlinesSeasonal or ended	n/a	Bombardier CRJ550	778	1h 41m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

DTW to IAD flight schedule

12 flight numbers flew this route in August 2026, 5 of them almost daily. The first usually leaves at 6:00am and the last at 9:50pm. Times are local and can change; check with the airline before you book.

Flight	Departs	Arrives	Days flown in August 2026	On time (12 months)
UA 4058United Airlines · operated by Mesa Airlines	6:00am	7:34am	8	82%
UA 6168United Airlines · operated by Mesa Airlines	6:00am	7:31am	12	90%
DL 2884Delta Air Lines	8:50am	10:23am	26	92%
UA 3500United Airlines · operated by Republic Airline	10:13am	11:50am	10	92%
DL 3883Delta Air Lines · operated by SkyWest Airlines	10:15am	11:48am	4	n/a
UA 3485United Airlines · operated by Republic Airline	10:20am	11:51am	21	95%
UA 6190United Airlines · operated by Mesa Airlines	2:05pm	3:49pm	31	81%
DL 3787Delta Air Lines · operated by SkyWest Airlines	3:00pm	4:36pm	5	67%
DL 1787Delta Air Lines	3:05pm	4:38pm	26	83%
UA 6362United Airlines · operated by Mesa Airlines	7:45pm	9:20pm	16	75%
UA 4305United Airlines · operated by CommuteAir	7:48pm	9:25pm	15	40%
DL 3988Delta Air Lines · operated by SkyWest Airlines	9:50pm	11:26pm	30	70%

Is DTW to IAD on time?

From September 2025 to August 2026, 79% of 2,198 flights arrived within 15 minutes of schedule and 1.2% were cancelled. Flights leaving around 6am were the most punctual (91%), those around 9pm the least (69%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (47%).

Airline	Flights	On time	Average delay	Cancelled
Delta Air Lines	1,129	74%	25 min	1.3%
United Airlines	1,069	83%	17 min	1.1%

Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.

On-time arrivals by departure time

Scheduled departure	Flights	On time
5am to 6am	85	88%
6am to 7am	137	91%
8am to 9am	170	89%
10am to 11am	318	81%
2pm to 3pm	493	76%
3pm to 4pm	191	72%
7pm to 8pm	360	78%
9pm to 10pm	359	69%

Flights by month

Month	Flights	Passengers
August 2025	206	12,354
September 2025	195	11,108
October 2025	200	11,173
November 2025	174	9,498
December 2025	180	10,338
January 2026	150	7,209
February 2026	140	7,180
March 2026	171	9,783
April 2026	168	9,506
May 2026	193	13,193
June 2026	199	13,368
July 2026	201	13,476

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.