Flight number record
DL 534
Delta Air Lines · Honolulu to Salt Lake City
- Route
- HNL → SLC
- Departs
- 19:45
- Flights
- 303
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 534, check with Delta Air Lines.
DL 534 lands a B−, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 303 flights, with a median arrival 8 minutes early.
Set against the rest of the country, DL 534's record is 6 points better than the US average of 77.3%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.
Key figures
On time
83.7%
Arrivals under 15 minutes late, of 289 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
4.29%
National rate is 1.89%
1 hour+ late
5.5%
National rate is 8.3%
These figures cover 303 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When DL 534 flies
DL 534 flies HNL to SLC without a single fixed slot. Its most common scheduled departure was 19:45, used on 61 of 303 flights, with 19:40 (56 flights) and 10:50 (42 flights) next.
- Departs 19:4561 flights20.1%
- Departs 19:4056 flights18.5%
- Departs 10:5042 flights13.9%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 534 runs 16 points better at 83.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 534 next to HNL to SLC
Every carrier on HNL to SLC combined arrived on time 82.3% 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 83.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 534thin sample | 303 | 83.7% | 65 min | 4.29% | B− |
| All Delta Air Lines on HNL–SLC | 492 | 83.8% | 72 min | 3.05% | B− |
| All carriers on HNL–SLC | 856 | 82.3% | 65 min | 1.75% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 534 quarter by quarter
DL 534 did not run the same all year. Its best quarter was Jul–Sep 2026 at 90.9% on time and its weakest Jan–Mar 2026 at 76.1%, a swing of 15 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 202530 flights—
- Oct–Dec 202548 flights77.1%
- Jan–Mar 202672 flights76.1%
- Apr–Jun 202691 flights87.4%
- Jul–Sep 202662 flights90.9%
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 76.1%. Each day rests on about 43 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 534 runs when it is late
DL 534 often beats the schedule: 95 of 289 completed flights, 33%, arrived 15 minutes or more early. Most of the lateness is short. 24 of the 47 late arrivals were under half an hour behind, and 16 reached an hour or more.
- 15+ min early95 flights32.9%
- Within 15 min147 flights50.9%
- 15–29 min late24 flights8.3%
- 30–59 min late7 flights2.4%
- 1–2 hours late6 flights2.1%
- 2+ hours late10 flights3.5%
Scale runs 0% to 100%.
Share of 289 completed flights by arrival against schedule.
4 of 33 late departures made up the time and arrived on time, 12% of them. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SLC.
The worst days
Worst days for DL 534
The latest arrival of the period was on 27 June 2026, 4 hours 1 minute behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 June 2026 | 4 hours 1 minute | Late-arriving aircraft |
| 31 July 2026 | 3 hours 41 minutes | Carrier |
| 29 September 2025 | 2 hours 56 minutes | Carrier |
| 16 February 2026 | 2 hours 54 minutes | Late-arriving aircraft |
| 9 December 2025 | 2 hours 50 minutes | Late-arriving aircraft |
Delay causes
Why DL 534 runs late
Carrier accounts for 47% of the 3,067 delay minutes carriers reported here, and the remaining four split what is left.
- 47%Carrier
- 38%Late-arriving aircraft
- 14%National Airspace System
38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,067 reported delay minutes here, that single category outweighs weather by 38 to one. The split is drawn from 3,067 delay minutes reported on DL 534.
Cancellations run at 4.29%, against 1.89% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
5.5% of arrivals land an hour or more late, close to the national 8.3%, so 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, the cancellation rate is the figure to plan around on DL 534: 4.29% of its 303 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- HNL to SLC, every carrier and departure
- SLC to HNL, the return direction
- Daniel K. Inouye International (HNL) delay statistics
- Salt Lake City International (SLC) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.