Flight number record
AA 645
American Airlines · Phoenix to Kahului
- Route
- PHX → OGG
- Departs
- 11:55
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 645, check with American Airlines.
AA 645 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 365 flights, with a median arrival 14 minutes early.
Set against the rest of the country, AA 645's record is 8 points better than the US average of 77.3%. That gap is worth roughly 81 fewer late arrivals for every thousand flights.
Key figures
On time
85.4%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
4.8%
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 645 flies
AA 645 flies PHX to OGG without a single fixed slot. Its most common scheduled departure was 11:55, used on 46 of 365 flights, with 10:59 (44 flights) and 12:09 (37 flights) next.
- Departs 11:5546 flights12.6%
- Departs 10:5944 flights12.1%
- Departs 12:0937 flights10.1%
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 11:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AA 645 runs 7 points better at 85.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
AA 645 next to PHX to OGG
Every carrier on PHX to OGG combined arrived on time 83.2% of the time across 860 flights, so AA 645 is 2 points ahead of it. Across its whole network American Airlines managed 74.7%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 645 | 365 | 85.4% | 53 min | 0.55% | A+ |
| All American Airlines on PHX–OGG | 495 | 85.2% | 53 min | 0.61% | A+ |
| All carriers on PHX–OGG | 860 | 83.2% | 48 min | 0.35% | B+ |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 645 quarter by quarter
AA 645 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Apr–Jun 2026 at 79.8%, a swing of 10 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202592 flights87.9%
- Jan–Mar 202690 flights89.9%
- Apr–Jun 202691 flights79.8%
- Jul–Sep 202662 flights81.0%
Scale runs 70% to 95%.
By weekday, AA 645 did best on Friday at 90.4% on time and worst on Sunday at 74.5%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 645 runs when it is late
AA 645 often beats the schedule: 178 of 357 completed flights, 50%, arrived 15 minutes or more early. The 52 late arrivals split 21 under half an hour, 14 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early178 flights49.9%
- Within 15 min127 flights35.6%
- 15–29 min late21 flights5.9%
- 30–59 min late14 flights3.9%
- 1–2 hours late10 flights2.8%
- 2+ hours late7 flights2.0%
Scale runs 0% to 100%.
Share of 357 completed flights by arrival against schedule.
A late pushback is often recovered here: of 47 departures that left 15 minutes late or more, 15 still arrived on time. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at OGG.
The worst days
Worst days for AA 645
The latest arrival of the period was on 14 December 2025, 2 hours 54 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 2 hours 54 minutes | Late-arriving aircraft |
| 23 August 2026 | 2 hours 37 minutes | Late-arriving aircraft |
| 17 August 2026 | 2 hours 16 minutes | Late-arriving aircraft |
| 8 January 2026 | 2 hours 8 minutes | Late-arriving aircraft |
| 26 January 2026 | 2 hours 6 minutes | Carrier |
Delay causes
Why AA 645 runs late
Late-arriving aircraft accounts for 46% of the 2,767 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 38%Carrier
- 16%National Airspace System
- 0%Extreme weather
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,767 reported delay minutes here, that single category outweighs weather by 46 to one. The split is drawn from 2,767 delay minutes reported on AA 645.
Cancellations are rare at 0.55%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.8% 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 2,844 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 645 in the data flew PHX to OGG. 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 645
For a booking, AA 645 has one of the better records a US domestic flight can show: 85.4% on time and 0.55% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PHX to OGG, every carrier and departure
- OGG to PHX, the return direction
- Phoenix Sky Harbor International (PHX) delay statistics
- Kahului Airport (OGG) 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
- Why the first flight of the morning is statistically safest
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.