Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Pittsburgh via Boston: arrives on time 89%
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23:05 SFO → 08:01 BOSUA 1665 · United · 5h 56m · 84% on time, 1.5% cancelled
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3h 44m layover in Boston (BOS) · 90 min minimum on separate tickets
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11:45 BOS → 13:40 PIT +1 dayDL 5731 · Delta, flown by Republic · 1h 55m · 91% on time, 0.6% cancelled
Total trip 11h 35m, scheduled departure to arrival (Pittsburgh is 3 h ahead of San Francisco). Times are local. Both flew on 48 of the last 56 days.
Makes the connection100%The first flight arrived more than 134 minutes late on <1% of the days it flew: too late for the 90-minute minimum connection on a 3h 44m layover.
Arrives on time89%First flight not cancelled (1.5% are) × connection made (100%) × second flight not cancelled (0.6% are) and within 15 minutes (91%).
Total trip11h 35mSFO 23:05 to PIT 13:40, 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.