Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Missoula → San Francisco via Chicago: arrives on time 41%
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12:34 MSO → 17:05 ORDUA 636 · United · 3h 31m · 84% on time, 4.2% cancelled
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1h 15m layover in Chicago (ORD) · 45 min minimum on one ticket
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18:20 ORD → 21:18 SFOUA 2179 · United · 4h 58m · 48% on time, 1.2% cancelled
Total trip 9h 44m, scheduled departure to arrival (San Francisco is 1 h behind Missoula). Times are local. Both flew on 56 of the last 56 days.
Makes the connection90%The first flight arrived more than 30 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time41%First flight not cancelled (4.2% are) × connection made (90%) × second flight not cancelled (1.2% are) and within 15 minutes (48%).
Total trip9h 44mMSO 12:34 to SFO 21:18, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.