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Showing United only (incl. its regional partners)All airlines ×
1,316 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 88% depart on time. After 4 pm it’s 72%.

Best time to leave 7–8 am 86% arrive on time from ORD
Best single flight UA 4382 ORD 10:25 → BUF 13:13 · 73% on time Avoid UA 1335 ORD 18:17 → BUF 21:03 · 66% 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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ORD
88
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72
% 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 4382flown by GoJet ORD 10:25 BUF 13:13 73%
UA 1335 ORD 18:17 BUF 21:03 66%

All 6 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 2753 ORD 07:15 BUF 10:00 1h 45m 37 86% 0.0% 45 min
UA 5690flown by SkyWest ORD 07:27 BUF 10:15 1h 48m 35 83% 0.0% 176 min
UA 4382flown by GoJet ORD 10:25 BUF 13:13 1h 48m 281 73% 2.1% 84 min
UA 2226 ORD 13:55 BUF 16:41 1h 46m 88 82% 0.0% 99 min
UA 1335 ORD 18:17 BUF 21:03 1h 46m 189 66% 1.6% 95 min
UA 5763flown by SkyWest ORD 18:17 BUF 21:08 1h 51m 30 62% 3.3% 38 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 ORD BUF 1h 46m 73% 2.8% 1,316 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