Skip to content
WanderNerd
Check a flight

Flight Reliability

AA 663 · American Airlines

Phoenix → Kailua-Kona (PHX–KOA)

88
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
6 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

AA 663 departing between 12–3 PM arrived on time 86% of the time, versus 63% between 3–6 PM.

Tuesday is the weak spot.

AA 663 arrived on time 88% of the time on Thursdays. On Tuesdays: 77%.

A bit ahead of the American Airlines network.

AA 663 arrived on time 83% of the time, versus 77% across the American Airlines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon85%(52 flights)
  • Tue77%(52 flights)
  • Wed79%(52 flights)
  • Thu88%(51 flights)
  • Fri83%(52 flights)
  • Sat88%(51 flights)
  • Sun83%(52 flights)
On-time by departure window
  • 9 AM–12 PM83%(240 flights)
  • 12–3 PM86%(103 flights)
  • 3–6 PM63%(19 flights)
On-time trend by month
90%
May

Jun 82% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%28
July 202574%31
August 202597%31
September 202593%30
October 202577%31
November 202587%30
December 202581%31
January 202677%31
February 202686%28
March 202687%30
April 202667%30
May 202690%31
Departures on time
83%
Diverted
0.5%
Flights flown
362
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.