Flight number record

UA 373

United Airlines · Honolulu to San Francisco

Route: HNL → SFO
Departs: 07:00
Flights: 345
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 373, check with United Airlines.

UA 373 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.7 hours. That rests on 345 flights, with a median arrival 11 minutes early.

Set against the rest of the country, UA 373's record is 12 points better than the US average of 77.6%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.

On time

89.6%

Arrivals under 15 minutes late, of 345 completed flights

Avg delay

161 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

4.6%

National rate is 8.1%

These figures cover 345 flights between July 2025 and June 2026. The median arrival is 11 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 373 flies

UA 373 flies HNL to SFO without a single fixed slot. Its most common scheduled departure was 07:00, used on 178 of 345 flights, with 08:00 (126 flights) and 07:10 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00178 flights51.6%
Departs 08:00126 flights36.5%
Departs 07:1041 flights11.9%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 373 runs level with that at 89.6%. 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 373 next to HNL to SFO

Every carrier on HNL to SFO combined arrived on time 80.9% of the time across 2,424 flights, so UA 373 is 9 points ahead of it. United flew 1,742 flights on the same city pair under all its flight numbers, including this one, and those ran 85.7% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 11 points.

UA 373 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 373thin sample	345	89.6%	161 min	0.00%	A+
All United Airlines on HNL–SFO	1,742	85.7%	70 min	0.52%	A+
All carriers on HNL–SFO	2,424	80.9%	62 min	0.95%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 373 quarter by quarter

UA 373 did not run the same all year. Its best quarter was Oct–Dec 2025 at 95.7% on time and its weakest Apr–Jun 2026 at 83.1%, a swing of 13 points on roughly 86 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 flights90.2%
Oct–Dec 202592 flights95.7%
Jan–Mar 202690 flights87.8%
Apr–Jun 202671 flights83.1%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 373 did best on Friday at 95.9% on time and worst on Sunday at 81.6%. Each day rests on about 49 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 373 runs late

One category carries most of the weight here. Carrier accounts for 53% of the 5,790 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.

Carrier
53%
Late-arriving aircraft
41%
National Airspace System
6%

41% 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 5,790 reported delay minutes here, that single category outweighs weather by 41 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 5,790 delay minutes reported on UA 373.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are 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 4.6% 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 2,398 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 ten other city pairs in the data, including SFO to MSP (43), SFO to BUR (37) and SFO to AUS (33), but none flew often enough under UA 373 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to HNL to SFO only.

One caution: this is a thin sample. 345 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 373

For a booking, UA 373 has one of the better records a US domestic flight can show: 89.6% on time and 0.00% 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