MSY to IAD flight delays & on-time performance
Nonstop flights from Louis Armstrong New Orleans International Airport to Washington Dulles International Airport · 955 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MSY or IAD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New Orleans (MSY) to Washington (IAD) arrived on time 92% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 4% arrived an hour or more late.
- Departures scheduled around 12pm did best (93% on time); around 5pm did worst (71%).
- Tuesday was the most reliable day to fly (97% on time) and Sunday the least (87%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (52%).
Which airline is most on time from MSY to IAD?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Frontier Airlines | 100% | 0.0% | 0 min | 0.0% | 3 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 93% | 0.0% | 1 min | 0.0% | 15 |
| United Airlines | 92% | 0.7% | 8 min | 3.8% | 613 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am93%286 flights
- 11am88%25 flights
- 12pm93%294 flights
- 5pm71%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday91%0.0% cancelled
- Tuesday97%2.9% cancelled
- Wednesday95%0.0% cancelled
- Thursday93%0.0% cancelled
- Friday91%0.0% cancelled
- Saturday91%0.0% cancelled
- Sunday87%2.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)52%
- Air traffic control & airport congestion31%
- Late-arriving aircraft11%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather75%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion0%
- Security0%
MSY to IAD: common questions
- How often are MSY to IAD flights on time?
- 92% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from New Orleans to Washington cancelled?
- 0.6% of scheduled flights were cancelled (4 of 631).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 86 min behind schedule on average, and 3.7% of flights were an hour or more late.
- How long is taxi time at MSY?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAD to MSY — 86% on time
More flights from New Orleans
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MSY → IAD, nonstop flights by US airlines that report to the DOT. How we calculate this.