UA5339 SNA → SFO

United Airlines · Santa Ana, CA to San Francisco, CA · 139 flights observed, 2026-02-12 to 2026-06-30 · 372 mi

This flight's reliability varies a lot by day of week — 79% on-time on Saturdays vs. 32% on Mondays.

UA5339 covers more than one route in the data window — the stats below are for SNA → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
52%
Median delay
+11 min
90th percentile
+87 min
Cancellation rate
4%

How often is UA5339 on time?

Across 139 flights on SNA → SFO from 2026-02-12 to 2026-06-30, UA5339 arrived within 15 minutes of schedule 52% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +87 min or later. 4% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time7052%
16-30 min118%
31-60 min2317%
61-120 min2720%
2+ hrs32%

Performance by month

MonthFlightsOn-timeAvg delay
2026-021675%+93 min
2026-033097%-13 min
2026-042836%+71 min
2026-053033%+40 min
2026-063030%+43 min

Performance by day of week

DayFlightsOn-time
Mon1932%
Tue2070%
Wed1947%
Thu1850%
Fri2045%
Sat1979%
Sun1942%

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