Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Columbus via Dulles: arrives on time 40%
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13:15 SFO → 21:25 IADUA 1791 · United · 5h 10m · 76% on time, 0.0% cancelled
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50m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:15 IAD → 23:42 CMHUA 4414 · United, flown by GoJet · 1h 27m · 66% on time, 6.5% cancelled
Total trip 7h 27m, scheduled departure to arrival (Columbus is 3 h ahead of San Francisco). Times are local. Both flew on 31 of the last 56 days.
Makes the connection65%The first flight arrived more than 5 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time40%First flight not cancelled (0.0% are) × connection made (65%) × second flight not cancelled (6.5% are) and within 15 minutes (66%).
Total trip7h 27mSFO 13:15 to CMH 23:42, 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.