UA406 IAD → SFO

United Airlines · Washington, DC to San Francisco, CA · 18 flights observed, 2026-03-05 to 2026-03-28 · 2,418 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -23 min, while the worst 10% run +57 min or later.

UA406 covers more than one route in the data window — the stats below are for IAD → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
83%
Median delay
-23 min
90th percentile
+57 min
Cancellation rate
0%

How often is UA406 on time?

Across 18 flights on IAD → SFO from 2026-03-05 to 2026-03-28, UA406 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -23 min, and the worst 10% of flights arrived +57 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1583%
16-30 min00%
31-60 min16%
61-120 min16%
2+ hrs16%

Performance by month

MonthFlightsOn-timeAvg delay
2026-031883%+2 min

Performance by day of week

DayFlightsOn-time
MonNo data—
TueNo data—
Wed367%
Thu4100%
Fri475%
Sat475%
Sun3100%

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