Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Dulles via Atlanta: arrives on time 63%
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07:50 SFO → 15:33 ATLDL 640 · Delta · 4h 43m · 90% on time, 0.5% cancelled
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1h 19m layover in Atlanta (ATL) · 45 min minimum on one ticket
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16:52 ATL → 18:42 IADDL 2902 · Delta · 1h 50m · 71% on time, 5.5% cancelled
Total trip 7h 52m, scheduled departure to arrival (Dulles is 3 h ahead of San Francisco). Times are local. Both flew on 39 of the last 56 days.
Makes the connection94%The first flight arrived more than 34 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 19m layover.
Arrives on time63%First flight not cancelled (0.5% are) × connection made (94%) × second flight not cancelled (5.5% are) and within 15 minutes (71%).
Total trip7h 52mSFO 07:50 to IAD 18:42, 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.