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Showing United only (incl. its regional partners)All airlines ×
950 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s DAY → IAD flights land within a few points of 84% on time whatever the hour.

Best time to leave 7–8 pm 86% arrive on time from DAY
Best single flight UA 4267 DAY 19:43 → IAD 21:25 · 87% on time Avoid UA 4824 DAY 14:53 → IAD 16:30 · 80% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

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% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
UA 4267flown by CommuteAir DAY 19:43 IAD 21:25 87%
UA 4824flown by CommuteAir DAY 14:53 IAD 16:30 80%

All 4 United flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
UA 4181flown by GoJet DAY 10:23 IAD 11:53 1h 30m 37 84% 0.0% 87 min
UA 4296flown by CommuteAir DAY 10:23 IAD 11:55 1h 32m 138 88% 1.4% 81 min
UA 4824flown by CommuteAir DAY 14:53 IAD 16:30 1h 37m 364 80% 1.9% 143 min
UA 4267flown by CommuteAir DAY 19:43 IAD 21:25 1h 42m 227 87% 1.8% 156 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
United DAY IAD 1h 33m 84% 1.6% 950 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON