Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Dulles via Seattle: arrives on time 72%
-
11:59 ONT → 14:53 SEADL 4070 · Delta, flown by SkyWest · 3h 01m · 91% on time, 0.0% cancelled
-
1h 27m layover in Seattle (SEA) · 45 min minimum on one ticket
-
16:20 SEA → 00:25 IAD +1 dayDL 541 · Delta · 5h 05m · 77% on time, 1.1% cancelled
Total trip 9h 26m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 45 of the last 56 days.
Makes the connection95%The first flight arrived more than 42 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 27m layover.
Arrives on time72%First flight not cancelled (0.0% are) × connection made (95%) × second flight not cancelled (1.1% are) and within 15 minutes (77%).
Total trip9h 26mONT 11:59 to IAD 00:25, 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.