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

Louisville → Washington via Houston: arrives on time 49%

  1. 15:41 SDF → 17:10 IAH
    UA 6310 · United, flown by Mesa · 2h 29m · 78% on time, 0.3% cancelled
  2. 55m layover in Houston (IAH) · 45 min minimum on one ticket
  3. 18:05 IAH → 22:15 DCA
    UA 1627 · United · 3h 10m · 66% on time, 0.6% cancelled

Total trip 6h 34m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection75%The first flight arrived more than 10 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time49%First flight not cancelled (0.3% are) × connection made (75%) × second flight not cancelled (0.6% are) and within 15 minutes (66%).
Total trip6h 34mSDF 15:41 to DCA 22:15, 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.