Flight number record

DL 359

Delta Air Lines · Honolulu to Seattle

Route: HNL → SEA
Departs: 13:20
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 359, check with Delta Air Lines.

DL 359 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 365 flights, with a median arrival 9 minutes early.

Set against the rest of the country, DL 359's record is 7 points better than the US average of 77.6%. That gap is worth roughly 71 fewer late arrivals for every thousand flights.

On time

84.7%

Arrivals under 15 minutes late, of 360 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

1.37%

National rate is 1.81%

1 hour+ late

5.0%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 9 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 359 flies

DL 359 flies HNL to SEA without a single fixed slot. Its most common scheduled departure was 13:20, used on 93 of 365 flights, with 13:17 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:2093 flights25.5%
Departs 13:1744 flights12.1%

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 13:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 359 runs 6 points better at 84.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 359 next to HNL to SEA

Every carrier on HNL to SEA combined arrived on time 75.2% of the time across 2,942 flights, so DL 359 is 10 points ahead of it. Delta flew 789 flights on the same city pair under all its flight numbers, including this one, and those ran 89.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 3 points.

DL 359 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 359	365	84.7%	63 min	1.37%	B
All Delta Air Lines on HNL–SEA	789	89.6%	88 min	1.39%	A
All carriers on HNL–SEA	2,942	75.2%	71 min	0.92%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 359 quarter by quarter

Quarter by quarter DL 359 held fairly steady: 86.8% in Jul–Sep 2025, 83.5% in Oct–Dec 2025, 84.3% in Jan–Mar 2026 and 84.3% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights86.8%
Oct–Dec 202592 flights83.5%
Jan–Mar 202690 flights84.3%
Apr–Jun 202691 flights84.3%

Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 359 did best on Wednesday at 94.1% on time and worst on Friday at 82.0%. Each day rests on about 52 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 359 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 3,472 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
55%
Carrier
22%
National Airspace System
21%
Extreme weather
1%

55% 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 3,472 reported delay minutes here, that single category outweighs weather by 55 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 3,472 delay minutes reported on DL 359.

Cancellations sit at 1.37% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

5.0% 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 2,677 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 359 in the data flew HNL to SEA. 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 359

For a booking, read DL 359 as 84.7% on time with 1.37% 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