Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Seattle → Baltimore via Raleigh/Durham: arrives on time 90%

  1. 21:33 SEA → 05:40 RDU
    AS 677 · Alaska · 5h 07m · 86% on time, 0.0% cancelled
  2. 3h 00m layover in Raleigh/Durham (RDU) · 90 min minimum on separate tickets
  3. 08:40 RDU → 09:50 BWI +1 day
    WN 4550 · Southwest · 1h 10m · 90% on time, 0.0% cancelled

Total trip 9h 17m, scheduled departure to arrival (Baltimore is 3 h ahead of Seattle). Times are local. Both flew on 37 of the last 56 days.

Makes the connection99%The first flight arrived more than 90 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 00m layover.
Arrives on time90%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip9h 17mSEA 21:33 to BWI 09:50, 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.