Historical on-time performance
Las Vegas to Washington
2,089 miData through Dec 2025Source: US DOT · BTS
Flights on LAS–DCA arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 612 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- American AirlinesOn-time75%Medianon timep9040 minCancel0.9%Flights337
- Southwest AirlinesOn-time68%Median5 minp9040 minCancel0.0%Flights275
Why flights run late
Delay causes
- Airline39%
- Weather2%
- Air traffic (NAS)33%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAS → DCA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 74% on time.
- Middays74% on time · p90 45 min · 1,099 flights
- Mornings67% on time · p90 40 min · 310 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 82% on time.
- Saturdays82% on time · p90 25 min · 199 flights · limited
- Wednesdays75% on time · p90 50 min · 200 flights
- Sundays73% on time · p90 35 min · 203 flights
- Tuesdays72% on time · p90 55 min · 200 flights
- Thursdays71% on time · p90 55 min · 202 flights
- Fridays69% on time · p90 40 min · 202 flights
- Mondays67% on time · p90 45 min · 203 flights
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