Historical on-time performance
Las Vegas to Washington
Flights on LAS–IAD arrive on time 87% of the time over the last 12 months.
based on 1,068 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- United AirlinesOn-time88%Medianon timep9015 minCancel0.6%Flights1,037
- Frontier AirlinesOn-time74%Medianon timep9055 minCancel0.0%Flights31
Why flights run late
Delay causes
- Airline41%
- Weather0%
- Air traffic (NAS)29%
- Late aircraft30%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline33%
- Weather67%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAS → IAD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 89% on time.
- Mornings89% on time · p90 15 min · 974 flights
- Overnights85% on time · p90 25 min · 964 flights
- Middays80% on time · p90 35 min · 1,054 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 90% on time.
- Tuesdays90% on time · p90 10 min · 411 flights
- Wednesdays89% on time · p90 10 min · 430 flights
- Saturdays85% on time · p90 25 min · 428 flights
- Mondays83% on time · p90 30 min · 440 flights
- Thursdays82% on time · p90 30 min · 448 flights
- Fridays81% on time · p90 25 min · 450 flights
- Sundays79% on time · p90 35 min · 447 flights
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