Flight number record

DL 344

Delta Air Lines · Seattle to Kahului

Route: SEA → OGG
Departs: 13:59
Flights: 365
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s DL 344, check with Delta Air Lines.

DL 344 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 40 minutes. That rests on 365 flights, with a median arrival 10 minutes early.

Set against the rest of the country, DL 344's record is 9 points better than the US average of 77.3%. That gap is worth roughly 87 fewer late arrivals for every thousand flights.

On time

86.0%

Arrivals under 15 minutes late, of 358 completed flights

Avg delay

40 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.89%

1 hour+ late

2.8%

National rate is 8.3%

These figures cover 365 flights between September 2025 and August 2026. The median arrival is 10 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 344 flies

DL 344 flies SEA to OGG without a single fixed slot. Its most common scheduled departure was 13:59, used on 87 of 365 flights, with 14:55 (59 flights) and 14:30 (48 flights) next.

Departs 13:5987 flights23.8%
Departs 14:5559 flights16.2%
Departs 14:3048 flights13.2%

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 13:59 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 344 runs 8 points better at 86.0%. 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 344 next to SEA to OGG

Every carrier on SEA to OGG combined arrived on time 79.2% of the time across 1,809 flights, so DL 344 is 7 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 5 points.

DL 344 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 344	365	86.0%	40 min	0.82%	A+
All Delta Air Lines on SEA–OGG	365	86.0%	40 min	0.82%	A+
All carriers on SEA–OGG	1,809	79.2%	48 min	0.61%	B+
Delta Air Lines, whole network	1,039,517	81.1%	71 min	1.74%	B

Across the year

DL 344 quarter by quarter

Quarter by quarter DL 344 held fairly steady: 83.3% in Jul–Sep 2025, 86.7% in Oct–Dec 2025, 84.7% in Jan–Mar 2026, 90.1% in Apr–Jun 2026 and 82.3% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202530 flights83.3%
Oct–Dec 202592 flights86.7%
Jan–Mar 202690 flights84.7%
Apr–Jun 202691 flights90.1%
Jul–Sep 202662 flights82.3%

Scale runs 75% to 95%.

By weekday, DL 344 did best on Monday at 92.3% on time and worst on Tuesday at 78.4%. 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 344 runs when it is late

DL 344 often beats the schedule: 140 of 358 completed flights, 39%, arrived 15 minutes or more early. The 50 late arrivals split 24 under half an hour, 16 between 30 and 60 minutes, and 10 an hour or more.

15+ min early140 flights39.1%
Within 15 min168 flights46.9%
15–29 min late24 flights6.7%
30–59 min late16 flights4.5%
1–2 hours late9 flights2.5%
2+ hours late1 flights0.3%

Scale runs 0% to 100%.

Share of 358 completed flights by arrival against schedule.

A late pushback is often recovered here: of 50 departures that left 15 minutes late or more, 18 still arrived on time. 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 OGG.

The worst days

Worst days for DL 344

The latest arrival of the period was on 22 February 2026, 2 hours 30 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across February, August, December and March, with no single month standing out.

The latest arrivals of DL 344 in the period
Date	Arrived late by	Largest filed cause
22 February 2026	2 hours 30 minutes	Extreme weather
5 August 2026	1 hour 30 minutes	Late-arriving aircraft
18 December 2025	1 hour 23 minutes	Carrier
17 March 2026	1 hour 23 minutes	Late-arriving aircraft
19 December 2025	1 hour 18 minutes	National Airspace System

Delay causes

Why DL 344 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 2,015 reported delay minutes.

Carrier
33%
National Airspace System
31%
Late-arriving aircraft
30%
Extreme weather
6%

No single cause dominates. carrier at 33%, national airspace system at 31% and late-arriving aircraft at 30% split the 2,015 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around. The split is drawn from 2,015 delay minutes reported on DL 344.

Cancellations are rare at 0.82%, 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

Badly late arrivals are rare here: only 2.8% land an hour or more behind schedule, against 8.3% 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 2,639 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 344 in the data flew SEA to OGG. 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 344

For a booking, DL 344 has one of the better records a US domestic flight can show: 86.0% on time and 0.82% cancelled. That is a base rate, not a promise about any single 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures