Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Francisco → Aspen via Denver: arrives on time 42%
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12:43 SFO → 16:35 DENUA 540 · United · 2h 52m · 77% on time, 0.0% cancelled
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50m layover in Denver (DEN) · 45 min minimum on one ticket
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17:25 DEN → 18:29 ASEUA 5775 · United, flown by SkyWest · 1h 04m · 72% on time, 6.0% cancelled
Total trip 4h 46m, scheduled departure to arrival (Aspen is 1 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.
Makes the connection61%The first flight arrived more than 5 minutes late on 39% of the days it flew: too late for the 45-minute minimum connection on a 50m layover.
Arrives on time42%First flight not cancelled (0.0% are) × connection made (61%) × second flight not cancelled (6.0% are) and within 15 minutes (72%).
Total trip4h 46mSFO 12:43 to ASE 18:29, 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.