Route on-time record
IAD to DTW: most on-time flights and the best time to fly
Dulles (Washington Dulles International Airport) to Detroit (Detroit Metropolitan Wayne County Airport). 1,091 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was SkyWest 3826 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAD → DTW
Dulles to Detroit: 1,091 nonstop flights a year
On time (12 months)
76%
Cancelled
1.4%
avg delay 27 min
Best time to leave
9 AM to noon
90% on time vs 66% noon to 3 PM
Most reliable airline
Delta
77% chance on time
Lowest nonstop fare seen in the next two months: $227 (United 2846 on 2026-10-22). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3826 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 7:31 AM1h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 3905, 3888; its record covers all of them.
83%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 87% of the time (85 flights, Jun 2025 to May 2026).
- Never cancelled in 85 scheduled flights.
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Moderate track record · 85 flights
Find 6:00 AM flight fares Opens this date on Aviasales#2 · SkyWest 3849 · sold as United Express, Delta Connection, American Eagle or Alaska
11:15 AM → 12:53 PM1h 38m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 92% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 90% on time; Noon to 3 PM: 66%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find 11:15 AM flight fares Opens this date on Aviasales#3 · SkyWest 3878 · sold as United Express, Delta Connection, American Eagle or Alaska
11:04 AM → 12:41 PM1h 37m nonstop
Local times, typical schedule. Last flown 2026-05-06.
80%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 88% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 90% on time; Noon to 3 PM: 66%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find 11:04 AM flight fares Opens this date on Aviasales#4 · Delta 1787
5:21 PM → 6:57 PM1h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 88%
- Cancelled
- 4.0%
- Avg arrival delay
- 17 min
- Arrived on time 88% of the time (24 flights, Jun 2025 to May 2026).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Delta 1787 fares Opens this date on Aviasales#5 · Delta 955
5:07 PM → 6:44 PM1h 37m nonstop
Local times, typical schedule. Last flown 2026-05-06.
74%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (21 flights, Jun 2025 to May 2026).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find Delta 955 fares Opens this date on Aviasales#6 · Republic 3502 · sold as American Eagle, Delta Connection or United Express
12:55 PM → 2:34 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 66% on time; 9 AM to noon: 90%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 11 flights
Find 12:55 PM flight fares Opens this date on Aviasales#7 · SkyWest 3910 · sold as United Express, Delta Connection, American Eagle or Alaska
12:14 PM → 1:55 PM1h 41m nonstop
Local times, typical schedule. Last flown 2026-04-12.
73%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.8%
- Avg arrival delay
- 36 min
- Arrived on time 77% of the time (35 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 66% on time; 9 AM to noon: 90%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 35 flights
Find 12:14 PM flight fares Opens this date on Aviasales#8 · Republic 3554 · sold as American Eagle, Delta Connection or United Express
10:10 PM → 11:57 PM1h 47m nonstop
Local times, typical schedule. Last flown 2026-03-28.
72%
chance on time
- On time (history)
- 67%
- Cancelled
- 11.1%
- Avg arrival delay
- 18 min
- Arrived on time 67% of the time (15 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- 73% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find 10:10 PM flight fares Opens this date on Aviasales#9 · United 2265
10:05 PM → 11:44 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-05-20.
71%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 76% of the time (21 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find United 2265 fares Opens this date on Aviasales#10 · United 1873
5:10 PM → 6:51 PM1h 41m nonstop
Local times, typical schedule. Last flown 2026-04-27.
70%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find United 1873 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines77%
46 flights · 87% on time as flown · 1.6% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)75%
203 flights · 75% on time as flown · 1.7% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)74%
803 flights · 75% on time as flown · 1.3% cancel
- United Airlines74%
39 flights · 79% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
291 flights · avg delay 22 min
- 9 AM to noon90%
156 flights · avg delay 13 min
- Noon to 3 PM66%
89 flights · avg delay 46 min
- 3 to 6 PM66%
438 flights · avg delay 36 min
- After 9 PM72%
102 flights · avg delay 14 min
Best day: Thursday (85%). Worst: Saturday (79%).
Smarter routing
Nearby airports that run more on time
BWI → DTW 80% chance on time
Baltimore/Washington International Thurgood Marshall Airport to Detroit Metropolitan Wayne County Airport · 2,269 flights a year · 45 mi from your airports · yours: 75%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)71%
- Air traffic control and airport volume12%
- Severe weather11%
- Late-arriving aircraft5%
- Security1%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
IAD to DTW questions
- What time of day is best to fly IAD to DTW?
- 9 AM to noon: 90% of flights arrived on time, against 66% for departures noon to 3 PM.
- Which airline is most on time from IAD to DTW?
- Delta, with a season-adjusted 77% chance of operating and arriving on time over 46 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on IAD to DTW?
- January (72% on time); the best was October (93%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from IAD
- DTW to IAD (return)
- IAD to ATL 78%
- IAD to DEN 81%
- IAD to SFO 79%
- IAD to LAX 80%
- IAD to MCO 81%
- IAD to CLT 83%
- IAD to ORD 75%
- IAD to SEA 76%
- IAD to DFW 77%
- IAD to IAH 83%
- IAD to BOS 75%
- IAD to EWR 73%
Live status: FAA delays and ground stops