Flight number record

DL 534

Delta Air Lines · Honolulu to Salt Lake City

Route: HNL → SLC
Departs: 19:10
Flights: 303
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 534, check with Delta Air Lines.

DL 534 lands a B, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 303 flights, with a median arrival 8 minutes early.

Set against the rest of the country, DL 534's record is 5 points better than the US average of 77.6%. That gap is worth roughly 48 fewer late arrivals for every thousand flights.

On time

82.4%

Arrivals under 15 minutes late, of 295 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

2.31%

National rate is 1.81%

1 hour+ late

5.1%

National rate is 8.1%

These figures cover 303 flights between July 2025 and June 2026. The median arrival is 8 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 DL 534 flies

DL 534 flies HNL to SLC without a single fixed slot. Its most common scheduled departure was 19:10, used on 97 of 303 flights, with 19:45 (55 flights) and 10:50 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:1097 flights32.0%
Departs 19:4555 flights18.2%
Departs 10:5042 flights13.9%

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 19:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and DL 534 runs 14 points better at 82.4%. 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

DL 534 next to HNL to SLC

Every carrier on HNL to SLC combined arrived on time 82.6% of the time across 856 flights, so DL 534 is about level with it. Delta flew 492 flights on the same city pair under all its flight numbers, including this one, and those ran 83.0% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 534 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 534thin sample	303	82.4%	62 min	2.31%	B
All Delta Air Lines on HNL–SLC	492	83.0%	70 min	1.83%	B
All carriers on HNL–SLC	856	82.6%	67 min	1.05%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 534 quarter by quarter

DL 534 did not run the same all year. Its best quarter was Apr–Jun 2026 at 87.4% on time and its weakest Jan–Mar 2026 at 76.1%, a swing of 11 points on roughly 76 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 flights85.4%
Oct–Dec 202548 flights77.1%
Jan–Mar 202672 flights76.1%
Apr–Jun 202691 flights87.4%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, DL 534 did best on Wednesday at 96.9% on time and worst on Saturday at 68.1%. Each day rests on about 43 flights, so a gap of 29 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 534 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 3,234 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
45%
Carrier
38%
National Airspace System
17%

45% 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 3,234 reported delay minutes here, that single category outweighs weather by 45 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 3,234 delay minutes reported on DL 534.

Cancellations sit at 2.31% against a national 1.81%, which is ordinary. Diversions add another 0.33%.

Connections and routes

What a delay on this flight costs

5.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

At 2,994 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 303 flights under DL 534 in the data flew HNL to SLC. 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. 303 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 DL 534

For a booking, read DL 534 as 82.4% on time with 2.31% cancelled over 303 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means Delta Air Lines’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