Flight number record
DL 427
Delta Air Lines · Honolulu to Los Angeles
- Route
- HNL → LAX
- Departs
- 13:55
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 427, check with Delta Air Lines.
DL 427 lands a B+, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 365 flights, with a median arrival 4 minutes early.
Key figures
On time
76.4%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
5.2%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 4 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.
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Schedule
When DL 427 flies
DL 427 flies HNL to LAX without a single fixed slot. Its most common scheduled departure was 13:55, used on 62 of 365 flights, with 13:15 (54 flights) next.
- Departs 13:5562 flights17.0%
- Departs 13:1554 flights14.8%
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 13:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 427 runs level with that at 76.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 427 next to HNL to LAX
Every carrier on HNL to LAX combined arrived on time 80.3% of the time across 5,540 flights, so DL 427 is 4 points behind it. Delta flew 1,095 flights on the same city pair under all its flight numbers, including this one, and those ran 87.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 427 | 365 | 76.4% | 55 min | 0.27% | B+ |
| All Delta Air Lines on HNL–LAX | 1,095 | 87.8% | 67 min | 0.73% | A+ |
| All carriers on HNL–LAX | 5,540 | 80.3% | 76 min | 0.58% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 427 quarter by quarter
DL 427 did not run the same all year. Its best quarter was Oct–Dec 2025 at 92.4% on time and its weakest Jan–Mar 2026 at 62.2%, a swing of 30 points on roughly 73 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 flights80.0%
- Oct–Dec 202592 flights92.4%
- Jan–Mar 202690 flights62.2%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202662 flights65.6%
Scale runs 55% to 100%.
By weekday, DL 427 did best on Tuesday at 80.8% on time and worst on Sunday at 66.7%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 427 runs when it is late
DL 427 often beats the schedule: 97 of 364 completed flights, 27%, arrived 15 minutes or more early. Most of the lateness is short. 43 of the 86 late arrivals were under half an hour behind, and 19 reached an hour or more.
- 15+ min early97 flights26.6%
- Within 15 min181 flights49.7%
- 15–29 min late43 flights11.8%
- 30–59 min late24 flights6.6%
- 1–2 hours late8 flights2.2%
- 2+ hours late11 flights3.0%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 41 departures that left 15 minutes late or more, only 4 made it up before arrival. In the other direction, 49 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 LAX.
The worst days
Worst days for DL 427
The latest arrival of the period was on 4 August 2026, 9 hours 7 minutes 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 |
|---|---|---|
| 4 August 2026 | 9 hours 7 minutes | Late-arriving aircraft |
| 8 June 2026 | 3 hours 51 minutes | Carrier |
| 1 March 2026 | 3 hours 48 minutes | Carrier |
| 7 January 2026 | 2 hours 49 minutes | Late-arriving aircraft |
| 28 January 2026 | 2 hours 41 minutes | Late-arriving aircraft |
Delay causes
Why DL 427 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 4,731 reported delay minutes.
- 41%Late-arriving aircraft
- 35%National Airspace System
- 24%Carrier
- 0%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,731 reported delay minutes here, that single category outweighs weather by 41 to one. The split is drawn from 4,731 delay minutes reported on DL 427.
Cancellations are rare at 0.27%, below the national 1.89% 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
5.2% 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 2,556 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 365 flights under DL 427 in the data flew HNL to LAX. 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. 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 DL 427
For a booking, read DL 427 as 76.4% on time with 0.27% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- HNL to LAX, every carrier and departure
- LAX to HNL, the return direction
- American Airlines 162 on the same route79.2%
- Delta Air Lines 658 on the same route92.5%
- Delta Air Lines 422 on the same route94.7%
- United Airlines 1157 on the same route80.4%
- United Airlines 1169 on the same route90.1%
- American Airlines 164 on the same route87.3%
- Daniel K. Inouye International (HNL) delay statistics
- Los Angeles International (LAX) 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.