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Showing United only (incl. its regional partners)All airlines ×
1,107 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 3 in 4.

Best time to leave 10–11 am 87% arrive on time from MDT
Best single flight UA 4974 MDT 10:30 → IAD 11:28 · 87% on time Avoid UA 4268 MDT 14:52 → IAD 15:50 · 85% 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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MDT
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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 4974flown by CommuteAir MDT 10:30 IAD 11:28 87%
UA 4244flown by CommuteAir MDT 06:15 IAD 07:13 87%
UA 4268flown by CommuteAir MDT 14:52 IAD 15:50 85%

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 4244flown by CommuteAir MDT 06:15 IAD 07:13 58m 294 87% 1.7% 91 min
UA 4974flown by CommuteAir MDT 10:30 IAD 11:28 58m 298 87% 1.3% 111 min
UA 4268flown by CommuteAir MDT 14:52 IAD 15:50 58m 355 85% 1.1% 125 min
UA 4882flown by CommuteAir MDT 19:59 IAD 20:57 58m 85 78% 7.1% 143 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 MDT IAD 58m 85% 1.7% 1,107 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