Flight number record

UA 679

United Airlines · Cleveland to Los Angeles

Route: CLE → LAX
Departs: 14:40
Flights: 317
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 679, check with United Airlines.

UA 679 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 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 317 flights, with a median arrival 11 minutes early.

Set against the rest of the country, UA 679's record is 13 points better than the US average of 77.6%. That gap is worth roughly 129 fewer late arrivals for every thousand flights.

On time

90.5%

Arrivals under 15 minutes late, of 317 completed flights

Avg delay

59 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 317 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 679 flies

UA 679 flies CLE to LAX without a single fixed slot. Its most common scheduled departure was 14:40, used on 43 of 317 flights, with 15:42 (40 flights) and 15:35 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:4043 flights13.6%
Departs 15:4240 flights12.6%
Departs 15:3537 flights11.7%

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 14:40 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 679 runs 18 points better at 90.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 679 next to CLE to LAX

Every carrier on CLE to LAX combined arrived on time 85.6% of the time across 732 flights, so UA 679 is 5 points ahead of it. United flew 647 flights on the same city pair under all its flight numbers, including this one, and those ran 89.0% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 12 points.

UA 679 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 679thin sample	317	90.5%	59 min	0.00%	A+
All United Airlines on CLE–LAX	647	89.0%	50 min	0.15%	A+
All carriers on CLE–LAX	732	85.6%	51 min	0.14%	A+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 679 quarter by quarter

Quarter by quarter UA 679 held fairly steady: 94.9% in Jul–Sep 2025, 92.6% in Oct–Dec 2025, 86.7% in Jan–Mar 2026 and 88.0% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202578 flights94.9%
Oct–Dec 202581 flights92.6%
Jan–Mar 202683 flights86.7%
Apr–Jun 202675 flights88.0%

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

By weekday, UA 679 ranged from 82.7% on Friday to 93.9% on Tuesday. With about 45 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 679 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 42% of the 1,776 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
42%
National Airspace System
25%
Carrier
21%
Extreme weather
12%

Extreme weather accounts for 12% 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 1.9 times the usual weather exposure. The split is drawn from 1,776 delay minutes reported on UA 679.

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 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 2,052 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.

UA 679 is not only a CLE to LAX flight. It also flew LAX to LAS (265 flights, 78.9% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 317 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.

Other routes flown as UA 679
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
LAX to LASthin sample	265	78.9%	67 min	0.00%	B+

What to do with this

Booking UA 679

For a booking, UA 679 has one of the better records a US domestic flight can show: 90.5% 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