UA5508 SFO → CLD

United Airlines · San Francisco, CA to Carlsbad, CA · 94 flights observed, 2026-03-29 to 2026-06-30 · 422 mi

UA5508 covers more than one route in the data window — the stats below are for SFO → CLD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
75%
Median delay
-10 min
90th percentile
+43 min
Cancellation rate
1%

How often is UA5508 on time?

Across 94 flights on SFO → CLD from 2026-03-29 to 2026-06-30, UA5508 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +43 min or later. 1% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time7075%
16-30 min55%
31-60 min1213%
61-120 min44%
2+ hrs22%

Performance by month

MonthFlightsOn-timeAvg delay
2026-033100%-20 min
2026-042986%-8 min
2026-053171%+4 min
2026-063067%+32 min

Performance by day of week

DayFlightsOn-time
Mon1471%
Tue1486%
Wed1369%
Thu1362%
Fri1377%
Sat1292%
Sun1471%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…