Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Washington → Seattle via Denver: arrives on time 78%
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07:00 DCA → 09:07 DENF9 685 · Frontier · 4h 07m · 86% on time, 0.8% cancelled
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2h 53m layover in Denver (DEN) · 45 min minimum on one ticket
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12:00 DEN → 14:01 SEAF9 1175 · Frontier · 3h 04m · 81% on time, 2.2% cancelled
Total trip 10h 04m, scheduled departure to arrival (Seattle is 3 h behind Washington). Times are local. Both flew on 54 of the last 56 days.
Makes the connection99%The first flight arrived more than 128 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 2h 53m layover.
Arrives on time78%First flight not cancelled (0.8% are) × connection made (99%) × second flight not cancelled (2.2% are) and within 15 minutes (81%).
Total trip10h 04mDCA 07:00 to SEA 14:01, 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.