Route
MSY → IAD
Louis Armstrong New Orleans International Airport Washington Dulles International Airport
955 miles
Return route IAD → MSY →
How punctual is this route?
- On-time arrivals
- 91.8%
- Less than 15 minutes late
- Cancelled
- 0.5%
- Of scheduled flights
- Average delay when late
- 111 min
- Flights arriving 15+ minutes late
- Flights tracked
- 622
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 42%
- Late-arriving aircraft 30%
- Air traffic control & airport 25%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 97.8% | 45 |
| October 2025 | 90.9% | 55 |
| November 2025 | 91.7% | 60 |
| December 2025 | 93.8% | 48 |
| January 2026 | 95.3% | 45 |
| February 2026 | 90.0% | 50 |
| March 2026 | 90.2% | 51 |
| April 2026 | 95.0% | 60 |
| May 2026 | 85.7% | 70 |
| June 2026 | 88.6% | 44 |
| July 2026 | 91.5% | 48 |
| August 2026 | 93.5% | 46 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 608 | 91.7% | 0.5% | 113 min |
| Republic Airways | 11 | 90.9% | 0.0% | 16 min |
| Frontier Airlines | 3 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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