Historical on-time performance
Los Angeles to Washington
2,288 miData through Dec 2025Source: US DOT · BTS
Flights on LAX–IAD arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
Median delayon timetypical arrival
p90 delay20 min1 in 10 flights is worsetail risk
Cancelled0.5%of scheduled flights
based on 2,395 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time86%Medianon timep9020 minCancel0.5%Flights2,258
- Alaska AirlinesOn-time85%Medianon timep9015 minCancel0.0%Flights137
Why flights run late
Delay causes
- Airline31%
- Weather1%
- Air traffic (NAS)24%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
Advertisement
Keep exploring