Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Houston via Atlanta: arrives on time 83%
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21:20 SFO → 05:20 ATLUA 1603 · United · 5h 00m · 85% on time, 0.7% cancelled
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3h 00m layover in Atlanta (ATL) · 90 min minimum on separate tickets
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08:20 ATL → 09:28 HOU +1 dayDL 1509 · Delta · 2h 04m · 90% on time, 3.3% cancelled
Total trip 10h 04m, scheduled departure to arrival (Houston is 2 h ahead of San Francisco). Times are local. Both flew on 51 of the last 56 days.
Makes the connection97%The first flight arrived more than 90 minutes late on 3% of the days it flew: too late for the 90-minute minimum connection on a 3h 00m layover.
Arrives on time83%First flight not cancelled (0.7% are) × connection made (97%) × second flight not cancelled (3.3% are) and within 15 minutes (90%).
Total trip10h 04mSFO 21:20 to HOU 09:28, 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.