Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Seattle → Chicago via San Francisco: arrives on time 23%
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15:33 SEA → 17:47 SFOUA 2866 · United · 2h 14m · 56% on time, 0.0% cancelled
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47m layover in San Francisco (SFO) · 45 min minimum on one ticket
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18:34 SFO → 00:59 ORD +1 dayUA 1375 · United · 4h 25m · 58% on time, 0.0% cancelled
Total trip 7h 26m, scheduled departure to arrival (Chicago is 2 h ahead of Seattle). Times are local. Both flew on 30 of the last 56 days.
Makes the connection40%The first flight arrived more than 2 minutes late on 60% of the days it flew: too late for the 45-minute minimum connection on a 47m layover.
Arrives on time23%First flight not cancelled (0.0% are) × connection made (40%) × second flight not cancelled (0.0% are) and within 15 minutes (58%).
Total trip7h 26mSEA 15:33 to ORD 00:59, 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.