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

Atlanta → Boston via Washington: arrives on time 31%

  1. 15:30 ATL → 17:25 DCA
    DL 850 · Delta · 1h 55m · 58% on time, 1.4% cancelled
  2. 1h 00m layover in Washington (DCA) · 45 min minimum on one ticket
  3. 18:25 DCA → 20:23 BOS
    DL 5689 · Delta, flown by Republic · 1h 58m · 62% on time, 12.8% cancelled

Total trip 4h 53m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.

Makes the connection58%The first flight arrived more than 15 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time31%First flight not cancelled (1.4% are) × connection made (58%) × second flight not cancelled (12.8% are) and within 15 minutes (62%).
Total trip4h 53mATL 15:30 to BOS 20:23, 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.