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

Boston → Bozeman via Seattle: arrives on time 42%

  1. 15:40 BOS → 19:11 SEA
    DL 2889 · Delta · 6h 31m · 71% on time, 0.0% cancelled
  2. 48m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 19:59 SEA → 22:48 BZN
    DL 4039 · Delta, flown by SkyWest · 1h 49m · 84% on time, 0.5% cancelled

Total trip 9h 08m, scheduled departure to arrival (Bozeman is 2 h behind Boston). Times are local. Both flew on 42 of the last 56 days.

Makes the connection50%The first flight arrived more than 3 minutes late on 50% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time42%First flight not cancelled (0.0% are) × connection made (50%) × second flight not cancelled (0.5% are) and within 15 minutes (84%).
Total trip9h 08mBOS 15:40 to BZN 22:48, 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.