Flight number record

AA 684

American Airlines · Lihue to Phoenix

Route: LIH → PHX
Departs: 21:40
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AA 684, check with American Airlines.

AA 684 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 77.6%. When something does go wrong the average delay runs about 5.1 hours. That rests on 365 flights, with a median arrival 16 minutes early.

Set against the rest of the country, AA 684's record is 16 points better than the US average of 77.6%. That gap is worth roughly 155 fewer late arrivals for every thousand flights.

On time

93.1%

Arrivals under 15 minutes late, of 363 completed flights

Avg delay

305 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

3.0%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 16 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.

Schedule

When AA 684 flies

AA 684 flies LIH to PHX without a single fixed slot. Its most common scheduled departure was 21:40, used on 91 of 365 flights, with 21:30 (44 flights) and 22:10 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:4091 flights24.9%
Departs 21:3044 flights12.1%
Departs 22:1037 flights10.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 21:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AA 684 runs 23 points better at 93.1%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

AA 684 next to LIH to PHX

Every carrier on LIH to PHX combined arrived on time 92.7% of the time across 384 flights, so AA 684 is about level with it. Across its whole network American Airlines managed 74.4%, which this flight beats by 19 points.

AA 684 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AA 684	365	93.1%	305 min	0.27%	A+
All American Airlines on LIH–PHX	384	92.7%	276 min	0.26%	A+
All carriers on LIH–PHX	384	92.7%	276 min	0.26%	A+
American Airlines, whole network	986,297	74.4%	85 min	2.29%	C

Across the year

AA 684 quarter by quarter

AA 684 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 86.5%, a swing of 10 points on roughly 91 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 202592 flights96.7%
Oct–Dec 202592 flights93.4%
Jan–Mar 202690 flights86.5%
Apr–Jun 202691 flights95.6%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AA 684 ranged from 90.2% on Sunday to 100.0% on Monday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why AA 684 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 56% of the 7,633 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
56%
Carrier
28%
Extreme weather
11%
National Airspace System
4%
Security
0%

Extreme weather accounts for 11% 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 1.8 times the usual weather exposure. The split is drawn from 7,633 delay minutes reported on AA 684.

Cancellations are rare at 0.27%, below the national 1.81% 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 3.0% land an hour or more behind schedule, against 8.1% 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 2,979 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 684 in the data flew LIH 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 684

For a booking, AA 684 has one of the better records a US domestic flight can show: 93.1% on time and 0.27% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures