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

San Francisco → Baltimore via Atlanta: arrives on time 68%

  1. 07:50 SFO → 15:33 ATL
    DL 640 · Delta · 4h 43m · 90% on time, 0.5% cancelled
  2. 3h 57m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 19:30 ATL → 21:25 BWI
    DL 1257 · Delta · 1h 55m · 70% on time, 1.6% cancelled

Total trip 10h 35m, scheduled departure to arrival (Baltimore is 3 h ahead of San Francisco). Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 192 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 57m layover.
Arrives on time68%First flight not cancelled (0.5% are) × connection made (99%) × second flight not cancelled (1.6% are) and within 15 minutes (70%).
Total trip10h 35mSFO 07:50 to BWI 21:25, 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.