Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → Washington via St Louis: arrives on time 80%
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06:50 ATL → 07:30 STLWN 3937 · Southwest · 1h 40m · 96% on time, 0.0% cancelled
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1h 00m layover in St Louis (STL) · 45 min minimum on one ticket
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08:30 STL → 11:25 DCAWN 3905 · Southwest · 1h 55m · 84% on time, 0.0% cancelled
Total trip 4h 35m, scheduled departure to arrival. Times are local. Both flew on 39 of the last 56 days.
Makes the connection96%The first flight arrived more than 15 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (0.0% are) and within 15 minutes (84%).
Total trip4h 35mATL 06:50 to DCA 11:25, 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.