No clear winner: United’s SFO → BOS flights land within a few points of 4 in 5 on time whatever the hour.
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.
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.
All 7 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 1015 | SFO 07:00 | BOS 15:54 | 5h 54m | 81 | 95% | 1.2% | 55 min |
| UA 2647 | SFO 08:10 | BOS 17:04 | 5h 54m | 337 | 82% | 1.2% | 88 min |
| UA 2356 | SFO 10:05 | BOS 18:59 | 5h 54m | 328 | 63% | 0.9% | 82 min |
| UA 1372 | SFO 12:25 | BOS 21:21 | 5h 56m | 340 | 79% | 1.2% | 81 min |
| UA 2001 | SFO 16:15 | BOS 01:11 | 5h 56m | 94 | 88% | 0.0% | 66 min |
| UA 796 | SFO 21:25 | BOS 06:21 | 5h 56m | 204 | 87% | 0.5% | 37 min |
| UA 1665 | SFO 23:05 | BOS 08:01 | 5h 56m | 343 | 84% | 1.5% | 47 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 | SFO | BOS | 5h 54m | 80% | 1.2% | 1,904 | 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