Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Tucson via Salt Lake City: arrives on time 91%
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08:55 ORD → 11:39 SLCUA 1972 · United · 3h 44m · 84% on time, 1.3% cancelled
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3h 21m layover in Salt Lake City (SLC) · 90 min minimum on separate tickets
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15:00 SLC → 16:07 TUSDL 3717 · Delta, flown by SkyWest · 2h 07m · 94% on time, 0.3% cancelled
Total trip 9h 12m, scheduled departure to arrival (Tucson is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.
Makes the connection99%The first flight arrived more than 111 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 21m layover.
Arrives on time91%First flight not cancelled (1.3% are) × connection made (99%) × second flight not cancelled (0.3% are) and within 15 minutes (94%).
Total trip9h 12mORD 08:55 to TUS 16:07, 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.