Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boise → Ontario via San Francisco: arrives on time 21%
-
19:05 BOI → 19:58 SFOUA 649 · United · 1h 53m · 24% on time, 0.0% cancelled
-
1h 02m layover in San Francisco (SFO) · 45 min minimum on one ticket
-
21:00 SFO → 22:37 ONTUA 552 · United · 1h 37m · 83% on time, 0.5% cancelled
Total trip 4h 32m, scheduled departure to arrival (Ontario is 1 h behind Boise). Times are local. Both flew on 56 of the last 56 days.
Makes the connection25%The first flight arrived more than 17 minutes late on 75% of the days it flew: too late for the 45-minute minimum connection on a 1h 02m layover.
Arrives on time21%First flight not cancelled (0.0% are) × connection made (25%) × second flight not cancelled (0.5% are) and within 15 minutes (83%).
Total trip4h 32mBOI 19:05 to ONT 22:37, 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.