Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Harrisburg via Chicago: arrives on time 56%
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08:15 IAD → 09:36 ORDUA 1775 · United · 2h 21m · 84% on time, 0.6% cancelled
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53m layover in Chicago (ORD) · 45 min minimum on one ticket
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10:29 ORD → 13:34 MDTUA 4798 · United, flown by SkyWest · 2h 05m · 77% on time, 5.4% cancelled
Total trip 5h 19m, scheduled departure to arrival. Times are local. Both flew on 37 of the last 56 days.
Makes the connection78%The first flight arrived more than 8 minutes late on 22% of the days it flew: too late for the 45-minute minimum connection on a 53m layover.
Arrives on time56%First flight not cancelled (0.6% are) × connection made (78%) × second flight not cancelled (5.4% are) and within 15 minutes (77%).
Total trip5h 19mIAD 08:15 to MDT 13:34, 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.