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Route Reliability

Washington → New Orleans

IAD–MSY · 955 miles · Washington Dulles International Airport to Louis Armstrong New Orleans International Airport

92
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
1 min
Average arrival delay
0.4%
Cancelled
692
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines86% on time · 689 flights
  • Frontier Airlines100% on time · 3 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

IAD–MSY flights departing between 9 AM–12 PM arrived on time 98% of the time, versus 74% between 6–9 PM.

Sunday scaries are real for this one.

IAD–MSY flights arrived on time 90% of the time on Tuesdays. On Sundays: 79%.

Trending in the right direction.

IAD–MSY flights arrived on time 92% of the time over the last three months in the data, compared with 85% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon90%(106 flights)
  • Tue90%(80 flights)
  • Wed89%(84 flights)
  • Thu89%(105 flights)
  • Fri82%(108 flights)
  • Sat86%(100 flights)
  • Sun79%(105 flights)
On-time by departure window
  • 6–9 AM89%(218 flights)
  • 9 AM–12 PM98%(83 flights)
  • 12–3 PM91%(23 flights)
  • 3–6 PM82%(341 flights)
  • 6–9 PM74%(23 flights)
On-time trend by month
92%
May

Jun 73% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%60
July 202574%62
August 202582%54
September 202596%48
October 202595%55
November 202587%60
December 202575%60
January 202690%51
February 202689%53
March 202684%51
April 2026100%61
May 202692%73

Same trip, other airports

Keep nerding

Based on 692 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.