Flight number record

DL 427

Delta Air Lines · Honolulu to Los Angeles

Route: HNL → LAX
Departs: 13:55
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 427, check with Delta Air Lines.

DL 427 lands a B+, 3 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 8 minutes early.

On time

80.8%

Arrivals under 15 minutes late, of 365 completed flights

Avg delay

51 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

4.4%

National rate is 8.1%

These figures cover 365 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 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. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:5562 flights17.0%
Departs 13:1554 flights14.8%

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 13:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 427 runs 2 points better at 80.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 427 next to HNL to LAX

Every carrier on HNL to LAX combined arrived on time 81.1% of the time across 5,458 flights, so DL 427 is about level with it. Delta flew 1,095 flights on the same city pair under all its flight numbers, including this one, and those ran 88.3% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 427 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 427	365	80.8%	51 min	0.00%	B+
All Delta Air Lines on HNL–LAX	1,095	88.3%	72 min	0.64%	A+
All carriers on HNL–LAX	5,458	81.1%	77 min	0.53%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	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 91 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 flights88.0%
Oct–Dec 202592 flights92.4%
Jan–Mar 202690 flights62.2%
Apr–Jun 202691 flights80.2%

Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 427 did best on Saturday at 86.5% on time and worst on Sunday at 71.2%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

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 3,581 reported delay minutes.

Late-arriving aircraft
38%
National Airspace System
35%
Carrier
27%

38% 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 3,581 reported delay minutes here, that single category outweighs weather by 38 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 3,581 delay minutes reported on DL 427.

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 4.4% 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 2,556 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 80.8% on time with 0.00% cancelled over 365 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