Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Newark via San Francisco: arrives on time 42%
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13:50 ONT → 15:15 SFOUA 1375 · United · 1h 25m · 57% on time, 0.0% cancelled
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1h 05m layover in San Francisco (SFO) · 45 min minimum on one ticket
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16:20 SFO → 01:10 EWR +1 dayUA 2626 · United · 5h 50m · 70% on time, 1.7% cancelled
Total trip 8h 20m, scheduled departure to arrival (Newark is 3 h ahead of Ontario). Times are local. Both flew on 53 of the last 56 days.
Makes the connection61%The first flight arrived more than 20 minutes late on 39% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time42%First flight not cancelled (0.0% are) × connection made (61%) × second flight not cancelled (1.7% are) and within 15 minutes (70%).
Total trip8h 20mONT 13:50 to EWR 01:10, 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.