UA1635 LAX → IAD

United Airlines · Los Angeles, CA to Washington, DC · 347 flights observed, 2025-07-01 to 2026-06-30 · 2,288 mi

UA1635 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
87%
Median delay
-11 min
90th percentile
+20 min
Cancellation rate
1%

How often is UA1635 on time?

Across 347 flights on LAX → IAD from 2025-07-01 to 2026-06-30, UA1635 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +20 min or later. 1% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time29987%
16-30 min154%
31-60 min134%
61-120 min51%
2+ hrs103%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073155%+33 min
2025-083184%0 min
2025-092879%+10 min
2025-103197%-18 min
2025-113093%-10 min
2025-123194%-9 min
2026-011794%-10 min
2026-022391%-14 min
2026-033090%+2 min
2026-0430100%-14 min
2026-053097%-10 min
2026-063080%+4 min

Performance by day of week

DayFlightsOn-time
Mon5188%
Tue4683%
Wed4591%
Thu5292%
Fri5184%
Sat4787%
Sun5086%

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