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Route Reliability

Houston → Miami

IAH–MIA · 964 miles · George Bush Intercontinental Airport to Miami International Airport

79
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
11 min
Average arrival delay
1.3%
Cancelled
3,764
Flights in the data

Data through May 2026.

Who flies it best

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

  1. 1.United Airlines81%1,485 flights
  2. 2.American Airlines79%1,642 flights
  3. 3.Spirit Airlines72%497 flights
  4. 4.Frontier Airlines69%140 flights

What the data says

Morning flights do better here.

IAH–MIA flights departing between 3–6 AM arrived on time 92% of the time, versus 67% between 3–6 PM.

Sunday scaries are real for this one.

IAH–MIA flights arrived on time 84% of the time on Tuesdays. On Sundays: 72%.

United Airlines runs this route best.

United Airlines arrived on time 81% of the time on this route; Frontier Airlines managed 69%.

Slipping a little lately.

IAH–MIA flights arrived on time 76% of the time over the last three months in the data, compared with 83% 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
  • Mon80%(532 flights)
  • Tue84%(477 flights)
  • Wed81%(499 flights)
  • Thu79%(550 flights)
  • Fri80%(542 flights)
  • Sat74%(538 flights)
  • Sun72%(566 flights)
On-time by departure window
  • 3–6 AM92%(389 flights)
  • 6–9 AM87%(769 flights)
  • 9 AM–12 PM80%(601 flights)
  • 12–3 PM79%(555 flights)
  • 3–6 PM67%(555 flights)
  • 6–9 PM70%(812 flights)
  • 9 PM–12 AM78%(23 flights)
On-time trend by month
78%
May

Jun 75% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%294
July 202567%302
August 202572%294
September 202582%275
October 202585%303
November 202582%328
December 202583%337
January 202683%335
February 202683%305
March 202670%331
April 202681%306
May 202678%294

Same trip, other airports

Keep nerding

Based on 3,764 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.