Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Newark via Boston: arrives on time 88%
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21:25 SFO → 06:21 BOSUA 796 · United · 5h 56m · 87% on time, 0.5% cancelled
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3h 09m layover in Boston (BOS) · 45 min minimum on one ticket
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09:30 BOS → 10:58 EWR +1 dayUA 1307 · United · 1h 28m · 90% on time, 1.6% cancelled
Total trip 10h 33m, scheduled departure to arrival (Newark is 3 h ahead of San Francisco). Times are local. Both flew on 28 of the last 56 days.
Makes the connection100%The first flight arrived more than 144 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 09m layover.
Arrives on time88%First flight not cancelled (0.5% are) × connection made (100%) × second flight not cancelled (1.6% are) and within 15 minutes (90%).
Total trip10h 33mSFO 21:25 to EWR 10:58, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.