Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Newark via Houston: arrives on time 55%
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00:45 SFO → 06:34 IAHUA 604 · United · 3h 49m · 83% on time, 0.0% cancelled
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46m layover in Houston (IAH) · 45 min minimum on one ticket
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07:20 IAH → 11:59 EWRUA 1886 · United · 3h 39m · 88% on time, 1.6% cancelled
Total trip 8h 14m, scheduled departure to arrival (Newark is 3 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.
Makes the connection63%The first flight arrived more than 1 minutes late on 37% of the days it flew: too late for the 45-minute minimum connection on a 46m layover.
Arrives on time55%First flight not cancelled (0.0% are) × connection made (63%) × second flight not cancelled (1.6% are) and within 15 minutes (88%).
Total trip8h 14mSFO 00:45 to EWR 11:59, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.