Route on-time record
CLE to IAD: most on-time flights and the best time to fly
Cleveland (Cleveland Hopkins International Airport) to Dulles (Washington Dulles International Airport). 980 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was United 1252 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CLE → IAD
Cleveland to Dulles: 980 nonstop flights a year
On time (12 months)
87%
Cancelled
0.9%
avg delay 12 min
Best time to leave
Before 9 AM
96% on time vs 78% noon to 3 PM
Most reliable airline
United
87% chance on time
Lowest nonstop fare seen in the next two months: $206 (United 1252 on 2026-10-18). 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 1252
6:00 AM → 7:20 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
96%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 98% of the time (87 flights, Jun 2025 to May 2026).
- Never cancelled in 87 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; Noon to 3 PM: 78%).
Moderate track record · 87 flights
Find United 1252 fares Opens this date on Aviasales#2 · United 445
10:37 AM → 11:53 AM1h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1327; its record covers all of them.
93%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 96% of the time (27 flights, Jun 2025 to May 2026).
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find United 445 fares Opens this date on Aviasales#3 · United 780
3:10 PM → 4:30 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 214; its record covers all of them.
83%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 84% of the time (114 flights, Jun 2025 to May 2026).
- Never cancelled in 114 scheduled flights.
- 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 · 114 flights
Find United 780 fares Opens this date on Aviasales#4 · Republic 3577 · sold as American Eagle, Delta Connection or United Express
7:47 PM → 9:13 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-19.
81%
chance on time
- On time (history)
- 86%
- Cancelled
- 2.3%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (42 flights, Jun 2025 to May 2026).
- Short track record (42 flights), so its score leans on the airline's record at this hour.
Limited track record · 42 flights
Find 7:47 PM flight fares Opens this date on Aviasales#5 · Republic 3456 · sold as American Eagle, Delta Connection or United Express
2:53 PM → 4:19 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-03-28.
80%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 81% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 78% on time; Before 9 AM: 96%).
- Lands inside IAD's trouble window: 75% of its 63 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 2:53 PM flight fares Opens this date on Aviasales#6 · United 2378
7:59 PM → 9:16 PM1h 17m nonstop
Local times, typical schedule. Last flown 2026-03-28.
79%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 45 min
- Arrived on time 71% of the time (24 flights, Jun 2025 to May 2026).
- 93% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find United 2378 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines87%
706 flights · 87% on time as flown · 0.5% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)84%
274 flights · 85% on time as flown · 1.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM96%
276 flights · avg delay 4 min
- 9 AM to noon94%
160 flights · avg delay 6 min
- Noon to 3 PM78%
124 flights · avg delay 12 min
- 3 to 6 PM86%
112 flights · avg delay 10 min
- 6 to 9 PM79%
308 flights · avg delay 22 min
Best day: Saturday (91%). 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
- Late-arriving aircraft60%
- Airline (crew, maintenance, boarding)26%
- Air traffic control and airport volume14%
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
CLE to IAD questions
- What time of day is best to fly CLE to IAD?
- Before 9 AM: 96% of flights arrived on time, against 78% 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 CLE to IAD?
- United, with a season-adjusted 87% chance of operating and arriving on time over 706 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 CLE to IAD?
- July (83% on time); the best was October (96%), 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 CLE
- IAD to CLE (return)
- CLE to ORD 74%
- CLE to ATL 85%
- CLE to EWR 80%
- CLE to MCO 78%
- CLE to LGA 76%
- CLE to DEN 81%
- CLE to CLT 81%
- CLE to BOS 78%
- CLE to DFW 75%
- CLE to DCA 65%
- CLE to FLL 80%
- CLE to MDW 82%
Live status: FAA delays and ground stops