Leave before 9 am: almost all depart on time. After 4 pm it’s 7 in 10.
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).
Pick an hour to see this route’s flights leaving then.
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 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 |
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