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Route Reliability

New Orleans → Houston

MSY–IAH · 305 miles · Louis Armstrong New Orleans International Airport to George Bush Intercontinental Airport

88
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
4 min
Average arrival delay
0.7%
Cancelled
3,127
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines83%2,934 flights
  2. 2.Spirit Airlines79%166 flights

Not enough history to rank: Frontier Airlines (27 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning flights do better here.

MSY–IAH flights departing between 3–6 AM arrived on time 94% of the time, versus 73% between 3–6 PM.

Sunday scaries are real for this one.

MSY–IAH flights arrived on time 87% of the time on Tuesdays. On Sundays: 79%.

United Airlines has a slight edge here.

United Airlines arrived on time 83% of the time on this route; Spirit Airlines managed 79%.

Recent months have been rougher.

MSY–IAH flights arrived on time 80% of the time over the last three months in the data, compared with 90% 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
  • Mon83%(455 flights)
  • Tue87%(418 flights)
  • Wed85%(427 flights)
  • Thu81%(446 flights)
  • Fri82%(455 flights)
  • Sat84%(426 flights)
  • Sun79%(474 flights)
On-time by departure window
  • 3–6 AM94%(356 flights)
  • 6–9 AM83%(362 flights)
  • 9 AM–12 PM90%(584 flights)
  • 12–3 PM84%(524 flights)
  • 3–6 PM73%(761 flights)
  • 6–9 PM81%(436 flights)
  • 9 PM–12 AM85%(78 flights)
On-time trend by month
74%
May

Jun 72% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%252
July 202575%265
August 202584%266
September 202592%281
October 202583%285
November 202581%254
December 202588%245
January 202692%240
February 202690%236
March 202681%257
April 202684%272
May 202674%248

Same trip, other airports

Keep nerding

Based on 3,127 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.