Historical on-time performance
New Orleans to Washington
955 miData through May 2026Source: US DOT · BTS
Flights on MSY–IAD arrive on time 90% of the time over the last 12 months.
On-time rate90%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 631 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time90%Medianon timep9010 minCancel0.6%Flights631
Why flights run late
Delay causes
- Airline53%
- Weather6%
- Air traffic (NAS)25%
- Late aircraft16%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline50%
- Weather50%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 4 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 MSY → 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 — 90% on time.
- Mornings90% on time · p90 5 min · 1,035 flights
- Middays87% on time · p90 15 min · 911 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 86% to 90% on time.
- Saturdays90% on time · p90 10 min · 262 flights
- Tuesdays89% on time · p90 5 min · 272 flights
- Sundays89% on time · p90 10 min · 269 flights
- Thursdays89% on time · p90 10 min · 295 flights
- Fridays89% on time · p90 15 min · 300 flights
- Wednesdays88% on time · p90 10 min · 275 flights
- Mondays86% on time · p90 25 min · 297 flights
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