Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dallas-Fort Worth → Boston via Denver: arrives on time 84%
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05:18 DFW → 06:31 DENF9 2147 · Frontier · 2h 13m · 90% on time, 0.9% cancelled
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3h 09m layover in Denver (DEN) · 90 min minimum on separate tickets
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09:40 DEN → 15:44 BOSUA 1232 · United · 4h 04m · 86% on time, 1.0% cancelled
Total trip 9h 26m, scheduled departure to arrival (Boston is 1 h ahead of Dallas-Fort Worth). Times are local. Both flew on 48 of the last 56 days.
Makes the connection99%The first flight arrived more than 99 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 09m layover.
Arrives on time84%First flight not cancelled (0.9% are) × connection made (99%) × second flight not cancelled (1.0% are) and within 15 minutes (86%).
Total trip9h 26mDFW 05:18 to BOS 15:44, 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.