Route on-time record
BDL to IAD: most on-time flights and the best time to fly
Hartford (Bradley International Airport) to Dulles (Washington Dulles International Airport). 1,071 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was United 635 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
BDL → IAD
Hartford to Dulles: 1,071 nonstop flights a year
On time (12 months)
85%
Cancelled
2.1%
avg delay 12 min
Best time to leave
Before 9 AM
94% on time vs 56% noon to 3 PM
Most reliable airline
United
85% chance on time
Lowest nonstop fare seen in the next two months: $231 (United 635 on 2026-10-21). 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 · United 635
6:00 AM → 7:31 AM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 2.3%
- Avg arrival delay
- 5 min
- Arrived on time 94% of the time (302 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; Noon to 3 PM: 56%).
Strong track record · 302 flights
Find United 635 fares Opens this date on Aviasales#2 · United 1786
10:33 AM → 11:58 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 2746, 1581; its record covers all of them.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.3%
- Avg arrival delay
- 9 min
- Arrived on time 91% of the time (232 flights, Jun 2025 to May 2026).
Strong track record · 232 flights
Find United 1786 fares Opens this date on Aviasales#3 · United 495
7:44 PM → 9:10 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-20.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 83% of the time (36 flights, Jun 2025 to May 2026).
- Never cancelled in 36 scheduled flights.
- 84% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (36 flights), so its score leans on the airline's record at this hour.
Limited track record · 36 flights
Find United 495 fares Opens this date on Aviasales#4 · Republic 3537 · sold as American Eagle, Delta Connection or United Express
7:35 PM → 9:14 PM1h 39m nonstop
Local times, typical schedule. Last flown 2026-03-28.
78%
chance on time
- On time (history)
- 89%
- Cancelled
- 10.3%
- Avg arrival delay
- 8 min
- Arrived on time 89% of the time (35 flights, Jun 2025 to May 2026).
- Cancelled 10.3% of the time (4 of 39).
- Short track record (35 flights), so its score leans on the airline's record at this hour.
Limited track record · 35 flights
Find 7:35 PM flight fares Opens this date on Aviasales#5 · United 1764
3:04 PM → 4:29 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 2.7%
- Avg arrival delay
- 15 min
- Arrived on time 76% of the time (107 flights, Jun 2025 to May 2026).
- Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 107 flights
Find United 1764 fares Opens this date on Aviasales#6 · Republic 3664 · sold as American Eagle, Delta Connection or United Express
2:45 PM → 4:23 PM1h 38m nonstop
Local times, typical schedule. Last flown 2026-03-27.
53%
chance on time
- On time (history)
- 53%
- Cancelled
- 5.0%
- Avg arrival delay
- 32 min
- Arrived on time 53% of the time (19 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 56% on time; Before 9 AM: 94%).
- Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 19 flights
Find 2:45 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines85%
878 flights · 87% on time as flown · 1.6% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)74%
193 flights · 72% on time as flown · 3.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
360 flights · avg delay 4 min
- 9 AM to noon89%
265 flights · avg delay 10 min
- Noon to 3 PM56%
132 flights · avg delay 33 min
- 3 to 6 PM76%
110 flights · avg delay 15 min
- 6 to 9 PM85%
204 flights · avg delay 12 min
Best day: Saturday (89%). Worst: Sunday (84%).
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
- Air traffic control and airport volume43%
- Late-arriving aircraft39%
- Airline (crew, maintenance, boarding)15%
- Severe weather3%
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
BDL to IAD questions
- What time of day is best to fly BDL to IAD?
- Before 9 AM: 94% of flights arrived on time, against 56% for departures noon to 3 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from BDL to IAD?
- United, with a season-adjusted 85% chance of operating and arriving on time over 878 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 BDL to IAD?
- June (80% on time); the best was October (92%), 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 BDL
- IAD to BDL (return)
- BDL to ORD 72%
- BDL to ATL 82%
- BDL to MCO 74%
- BDL to BWI 83%
- BDL to DCA 68%
- BDL to CLT 82%
- BDL to DTW 88%
- BDL to DEN 84%
- BDL to MSP 83%
- BDL to MDW 82%
- BDL to FLL 71%
Live status: FAA delays and ground stops