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Flight Reliability

AA 1347 · American Airlines

Houston → Miami (IAH–MIA)100% of its flights flew this route. The rest (IAH–PHX) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
11 min
Average arrival delay
0.8%
Cancelled
9 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

AA 1347 arrived on time 94% of the time on Thursdays and just 78% on Sundays. That gap is worth planning around.

Better than the IAH–MIA route average.

AA 1347 arrived on time 86% of the time, versus 78% across the IAH–MIA route.

Better than the American Airlines network average.

AA 1347 arrived on time 86% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon92%(51 flights)
  • Tue83%(52 flights)
  • Wed82%(51 flights)
  • Thu94%(50 flights)
  • Fri86%(51 flights)
  • Sat87%(52 flights)
  • Sun78%(50 flights)
On-time by departure window
  • 6–9 AM86%(356 flights)
  • 9 AM–12 PM—(1 flights)
On-time trend by month
84%
May

Jun 87% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202577%30
August 202572%29
September 202590%30
October 202594%31
November 202590%29
December 202593%28
January 202680%30
February 202693%28
March 202687%31
April 202687%30
May 202684%31
Departures on time
86%
Diverted
0.6%
Flights flown
357
Months covered
12

Same route, other flights

Keep nerding

Based on 362 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.