Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Salt Lake City via Austin: arrives on time 84%
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08:30 IAD → 10:56 AUSUA 637 · United · 3h 26m · 93% on time, 0.8% cancelled
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3h 35m layover in Austin (AUS) · 90 min minimum on separate tickets
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14:31 AUS → 16:40 SLCDL 3908 · Delta, flown by SkyWest · 3h 09m · 86% on time, 0.9% cancelled
Total trip 10h 10m, scheduled departure to arrival (Salt Lake City is 2 h behind Dulles). Times are local. Both flew on 32 of the last 56 days.
Makes the connection100%The first flight arrived more than 125 minutes late on <1% of the days it flew: too late for the 90-minute minimum connection on a 3h 35m layover.
Arrives on time84%First flight not cancelled (0.8% are) × connection made (100%) × second flight not cancelled (0.9% are) and within 15 minutes (86%).
Total trip10h 10mIAD 08:30 to SLC 16:40, 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.