No clear winner: Alaska’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.
No Alaska flight on this route ran 150+ times in the year.
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.
| Alaska | SFO | BOS | 5h 49m | 81% | 0.6% | 173 | Not flying now |
Alternatives with one stop
All connections →| AlaskaDetails → | SFO 16:24 → SAN 18:09AS 3337 · flown by SkyWest | 2h 43m San Diego | SAN 20:52 → BOS 05:40 +1AS 255 | 10h 16m | 98% | 80% |
| AlaskaDetails → | SFO 10:18 → SEA 12:27AS 656 | 3h 09m Seattle | SEA 15:36 → BOS 23:59AS 460 | 10h 41m | 98% | 75% |
| AlaskaDetails → | SFO 17:38 → SEA 19:47AS 758 | 3h 31m Seattle | SEA 23:18 → BOS 07:40 +1AS 536 | 11h 02m | 98% | 75% |
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