Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Boise → Ontario via San Francisco: arrives on time 40%
-
14:00 BOI → 14:58 SFOUA 4661 · United, flown by SkyWest · 1h 58m · 48% on time, 1.0% cancelled
-
1h 19m layover in San Francisco (SFO) · 45 min minimum on one ticket
-
16:17 SFO → 17:54 ONTUA 5613 · United, flown by SkyWest · 1h 37m · 67% on time, 3.8% cancelled
Total trip 4h 54m, scheduled departure to arrival (Ontario is 1 h behind Boise). Times are local. Both flew on 39 of the last 56 days.
Makes the connection63%The first flight arrived more than 34 minutes late on 37% of the days it flew: too late for the 45-minute minimum connection on a 1h 19m layover.
Arrives on time40%First flight not cancelled (1.0% are) × connection made (63%) × second flight not cancelled (3.8% are) and within 15 minutes (67%).
Total trip4h 54mBOI 14:00 to ONT 17:54, 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.