Y4 2483 then B6 1534 at San Francisco
Los Angeles → San Francisco → Boston
Timetable, San Francisco time
10:11Y4 2483 from Los Angeles at the gatealso F9 2857
22:10B6 1534 to Boston leaves the gatealso EY 8032
11 h 59 apart on the timetable
The last days
Y4 2483 and B6 1534 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.
Later flights to Boston
UA 166523:2013 h 09 after Y4 2483 on the timetablenot a partner airline