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

Boston → San Antonio via Chicago: arrives on time 28%

  1. 17:00 BOS → 19:00 ORD
    UA 2040 · United · 3h 00m · 55% on time, 2.5% cancelled
  2. 58m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 19:58 ORD → 22:57 SAT
    UA 1394 · United · 2h 59m · 57% on time, 2.2% cancelled

Total trip 6h 57m, scheduled departure to arrival (San Antonio is 1 h behind Boston). Times are local. Both flew on 55 of the last 56 days.

Makes the connection52%The first flight arrived more than 13 minutes late on 48% of the days it flew: too late for the 45-minute minimum connection on a 58m layover.
Arrives on time28%First flight not cancelled (2.5% are) × connection made (52%) × second flight not cancelled (2.2% are) and within 15 minutes (57%).
Total trip6h 57mBOS 17:00 to SAT 22:57, 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.