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

Boston → San Antonio via Dulles: arrives on time 75%

  1. 12:35 BOS → 14:43 IAD
    UA 3413 · United, flown by Republic · 2h 08m · 85% on time, 3.7% cancelled
  2. 3h 02m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 17:45 IAD → 20:22 SAT
    UA 1869 · United · 3h 37m · 81% on time, 0.6% cancelled

Total trip 8h 47m, scheduled departure to arrival (San Antonio is 1 h behind Boston). Times are local. Both flew on 27 of the last 56 days.

Makes the connection96%The first flight arrived more than 137 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 3h 02m layover.
Arrives on time75%First flight not cancelled (3.7% are) × connection made (96%) × second flight not cancelled (0.6% are) and within 15 minutes (81%).
Total trip8h 47mBOS 12:35 to SAT 20:22, 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.