Showing United only (incl. its regional partners)All airlines ×

1,453 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 83%.

Best time to leave 10–11 am 93% arrive on time from RDU

Best single flight UA 1789 RDU 06:00 → IAD 07:11 · 96% 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).

RDU

% 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 1789	RDU 06:00	IAD 07:11	96%

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 1789	RDU 06:00	IAD 07:11	1h 11m	167	96%	1.8%	60 min
UA 1535	RDU 10:32	IAD 11:43	1h 11m	149	90%	0.7%	68 min
UA 6265flown by Mesa	RDU 15:00	IAD 16:21	1h 21m	59	76%	0.0%	247 min
UA 3520flown by Republic	RDU 19:45	IAD 21:06	1h 21m	63	72%	4.8%	115 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	RDU	IAD	1h 13m	87%	1.2%	1,453	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