Historical on-time performance
Washington to New Orleans
955 miData through May 2026Source: US DOT · BTS
Flights on IAD–MSY arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.5%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-time84%Medianon timep9035 minCancel0.5%Flights631
Why flights run late
Delay causes
- Airline22%
- Weather7%
- Air traffic (NAS)21%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
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 3 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 IAD → MSY
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 10 min · 854 flights
- Evenings76% on time · p90 55 min · 1,081 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 86% on time.
- Saturdays86% on time · p90 25 min · 258 flights
- Thursdays85% on time · p90 20 min · 294 flights
- Mondays85% on time · p90 25 min · 299 flights
- Wednesdays81% on time · p90 35 min · 275 flights
- Fridays81% on time · p90 40 min · 298 flights
- Tuesdays80% on time · p90 30 min · 272 flights
- Sundays78% on time · p90 55 min · 275 flights
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