Flight number record
AA 664
American Airlines · Kailua-Kona to Phoenix
- Route
- KOA → PHX
- Departs
- 21:45
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 664, check with American Airlines.
AA 664 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 4.1 hours. That rests on 365 flights, with a median arrival 14 minutes early.
Set against the rest of the country, AA 664's record is 16 points better than the US average of 77.3%. That gap is worth roughly 163 fewer late arrivals for every thousand flights.
Key figures
On time
93.6%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
245 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
1.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 14 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When AA 664 flies
AA 664 flies KOA to PHX without a single fixed slot. Its most common scheduled departure was 21:45, used on 134 of 365 flights, with 21:55 (72 flights) next.
- Departs 21:45134 flights36.7%
- Departs 21:5572 flights19.7%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 21:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and AA 664 runs 24 points better at 93.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AA 664 next to KOA to PHX
Every carrier on KOA to PHX combined arrived on time 93.4% of the time across 384 flights, so AA 664 is about level with it. Across its whole network American Airlines managed 74.7%, which this flight beats by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 664 | 365 | 93.6% | 245 min | 1.37% | A |
| All American Airlines on KOA–PHX | 384 | 93.4% | 227 min | 1.30% | A |
| All carriers on KOA–PHX | 384 | 93.4% | 227 min | 1.30% | A |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 664 quarter by quarter
Quarter by quarter AA 664 held fairly steady: 91.3% in Oct–Dec 2025, 90.8% in Jan–Mar 2026, 97.8% in Apr–Jun 2026 and 93.4% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202592 flights91.3%
- Jan–Mar 202690 flights90.8%
- Apr–Jun 202691 flights97.8%
- Jul–Sep 202662 flights93.4%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, AA 664 ranged from 90.0% on Saturday to 96.2% on Monday. With about 52 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late AA 664 runs when it is late
AA 664 often beats the schedule: 171 of 359 completed flights, 48%, arrived 15 minutes or more early. The 23 late arrivals split 10 under half an hour, 6 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early171 flights47.6%
- Within 15 min165 flights46.0%
- 15–29 min late10 flights2.8%
- 30–59 min late6 flights1.7%
- 1–2 hours late1 flights0.3%
- 2+ hours late6 flights1.7%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
Only 17 of 359 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for AA 664
The latest arrival of the period was on 5 June 2026, 19 hours 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 June 2026 | 19 hours 33 minutes | Carrier |
| 13 March 2026 | 18 hours 20 minutes | Extreme weather |
| 9 January 2026 | 16 hours 52 minutes | Carrier |
| 16 August 2026 | 16 hours 27 minutes | Carrier |
| 22 August 2026 | 11 hours 19 minutes | Carrier |
Delay causes
Why AA 664 runs late
Carrier accounts for 66% of the 5,632 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Carrier
- 19%Extreme weather
- 8%Late-arriving aircraft
- 7%National Airspace System
Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.2 times the usual weather exposure. The split is drawn from 5,632 delay minutes reported on AA 664.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.27%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.9% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
At 2,860 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 365 flights under AA 664 in the data flew KOA to PHX. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking AA 664
For a booking, AA 664 has one of the better records a US domestic flight can show: 93.6% on time and 1.37% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Phoenix Sky Harbor International (PHX) delay statistics
- American Airlines on-time record
- Every American Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means American Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.