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1,516 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: almost all depart on time. After 4 pm it’s 7 in 10.

Best time to leave 5–6 am 97% arrive on time from BOS
Best single flight UA 1734 BOS 05:45 → IAD 07:23 · 97% on time Avoid UA 2136 BOS 19:27 → IAD 21:16 · 71% 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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BOS
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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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United (incl. Republic) 1,516 84% 2.7% 82 min

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 1734 BOS 05:45 IAD 07:23 97%
UA 2098 BOS 09:25 IAD 11:07 91%
UA 721 BOS 14:15 IAD 15:57 78%
UA 2136 BOS 19:27 IAD 21:16 71%

All 6 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 1734 BOS 05:45 IAD 07:23 1h 38m 345 97% 2.3% 60 min
UA 2098 BOS 09:25 IAD 11:07 1h 42m 347 91% 2.0% 66 min
UA 3413flown by Republic BOS 12:35 IAD 14:43 2h 08m 27 85% 3.7% 294 min
UA 721 BOS 14:15 IAD 15:57 1h 42m 347 78% 2.9% 88 min
UA 3543flown by Republic BOS 18:05 IAD 20:20 2h 15m 27 75% 25.9% 95 min
UA 2136 BOS 19:27 IAD 21:16 1h 49m 335 71% 2.4% 82 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 BOS IAD 1h 43m 84% 2.7% 1,516 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