Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Washington → Buffalo via Detroit: arrives on time 52%

19:59 DCA → 21:41 DTW

DL 2030 · Delta · 1h 41m · 70% on time, 3.3% cancelled
1h 09m layover in Detroit (DTW) · 45 min minimum on one ticket
22:50 DTW → 23:58 BUF

DL 978 · Delta · 1h 09m · 74% on time, 1.4% cancelled

Total trip 4h 00m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection74%The first flight arrived more than 24 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 1h 09m layover.

Arrives on time52%First flight not cancelled (3.3% are) × connection made (74%) × second flight not cancelled (1.4% are) and within 15 minutes (74%).

Total trip4h 00mDCA 19:59 to BUF 23:58, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.