UA688 LAX → IAD

United Airlines · Los Angeles, CA to Washington, DC · 113 flights observed, 2025-07-01 to 2026-01-05 · 2,288 mi

This flight has been getting less reliable recently — 2026-01's on-time rate (60%) is well below the 85% average from earlier months.

UA688 covers more than one route in the data window — the stats below are for LAX → IAD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
84%
Median delay
-6 min
90th percentile
+30 min
Cancellation rate
3%

How often is UA688 on time?

Across 113 flights on LAX → IAD from 2025-07-01 to 2026-01-05, UA688 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +30 min or later. 3% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time9284%
16-30 min66%
31-60 min44%
61-120 min33%
2+ hrs44%

Performance by month

MonthFlightsOn-timeAvg delay
2025-072972%+22 min
2025-083190%+3 min
2025-09786%+0 min
2025-1024100%-14 min
2025-121377%-2 min
2026-01560%+25 min

Performance by day of week

DayFlightsOn-time
Mon1688%
Tue1493%
Wed1567%
Thu17100%
Fri1479%
Sat1782%
Sun1681%

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