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Showing United only (incl. its regional partners)All airlines ×
1,327 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: United’s IAD → SYR flights land within a few points of 4 in 5 on time whatever the hour.

Best time to leave 8–9 am 85% arrive on time from IAD
Best single flight UA 4360 IAD 12:45 → SYR 14:15 · 82% on time Avoid UA 4977 IAD 17:25 → SYR 19:04 · 77% 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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IAD
87
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83
% 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 4360flown by CommuteAir IAD 12:45 SYR 14:15 82%
UA 4977flown by CommuteAir IAD 17:25 SYR 19:04 77%

All 8 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 4860flown by CommuteAir IAD 08:29 SYR 09:55 1h 26m 34 88% 0.0% 126 min
UA 4370flown by CommuteAir IAD 08:29 SYR 09:55 1h 26m 31 86% 3.2% 76 min
UA 4499flown by GoJet IAD 12:35 SYR 14:04 1h 29m 18 94% 11.1% 41 min
UA 4360flown by CommuteAir IAD 12:45 SYR 14:15 1h 30m 228 82% 2.6% 80 min
UA 4843flown by CommuteAir IAD 12:45 SYR 14:15 1h 30m 35 89% 0.0% 54 min
UA 4977flown by CommuteAir IAD 17:25 SYR 19:04 1h 39m 183 77% 3.8% 105 min
UA 4856flown by CommuteAir IAD 22:25 SYR 23:59 1h 34m 30 79% 6.7% 47 min
UA 4854flown by CommuteAir IAD 22:25 SYR 23:59 1h 34m 35 77% 0.0% 136 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 IAD SYR 1h 27m 80% 2.5% 1,327 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