Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Ontario via Salt Lake City: arrives on time 77%
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17:50 IAD → 20:46 SLCUA 2410 · United · 4h 56m · 80% on time, 1.2% cancelled
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2h 13m layover in Salt Lake City (SLC) · 90 min minimum on separate tickets
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22:59 SLC → 23:48 ONTDL 1614 · Delta · 1h 49m · 89% on time, 0.6% cancelled
Total trip 8h 58m, scheduled departure to arrival (Ontario is 3 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.
Makes the connection89%The first flight arrived more than 43 minutes late on 11% of the days it flew: too late for the 90-minute minimum connection on a 2h 13m layover.
Arrives on time77%First flight not cancelled (1.2% are) × connection made (89%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip8h 58mIAD 17:50 to ONT 23:48, 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.