Flight number record

UA 2373

United Airlines · Los Angeles to Kailua-Kona

Route: LAX → KOA
Departs: 09:00
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2373, check with United Airlines.

UA 2373 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 365 flights, with a median arrival 12 minutes early.

Set against the rest of the country, UA 2373's record is 14 points better than the US average of 77.6%. That gap is worth roughly 141 fewer late arrivals for every thousand flights.

On time

91.7%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 12 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 UA 2373 flies

UA 2373 flies LAX to KOA without a single fixed slot. Its most common scheduled departure was 09:00, used on 203 of 365 flights, with 09:20 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:00203 flights55.6%
Departs 09:2049 flights13.4%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 2373 runs 8 points better at 91.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 2373 next to LAX to KOA

Every carrier on LAX to KOA combined arrived on time 81.8% of the time across 1,606 flights, so UA 2373 is 10 points ahead of it. Across its whole network United Airlines managed 79.0%, which this flight beats by 13 points.

UA 2373 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2373	365	91.7%	53 min	0.55%	A+
All United Airlines on LAX–KOA	494	89.1%	41 min	0.81%	A+
All carriers on LAX–KOA	1,606	81.8%	50 min	0.87%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2373 quarter by quarter

Quarter by quarter UA 2373 held fairly steady: 94.5% in Jul–Sep 2025, 91.2% in Oct–Dec 2025, 93.3% in Jan–Mar 2026 and 87.9% in Apr–Jun 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 202592 flights94.5%
Oct–Dec 202592 flights91.2%
Jan–Mar 202690 flights93.3%
Apr–Jun 202691 flights87.9%

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

By weekday, UA 2373 did best on Wednesday at 96.1% on time and worst on Sunday at 82.7%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2373 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,587 reported delay minutes.

Carrier
39%
Late-arriving aircraft
37%
National Airspace System
24%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 1,587 reported delay minutes here, that single category outweighs weather by 37 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 1,587 delay minutes reported on UA 2373.

Cancellations are rare at 0.55%, 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 2.2% 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 2,504 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.

The same number turns up on one other city pair in the data, including ORD to LAX (29), but none flew often enough under UA 2373 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to KOA only.

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 UA 2373

For a booking, UA 2373 has one of the better records a US domestic flight can show: 91.7% on time and 0.55% cancelled. That is a base rate, not a promise about any single day.

Where to go next

A flight number here means United 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