Flight number record

DL 375

Delta Air Lines · Lihue to Seattle

Route: LIH → SEA
Departs: 21:40
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 375, check with Delta Air Lines.

DL 375 earns an A−. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 365 flights, with a median arrival 17 minutes early.

Set against the rest of the country, DL 375's record is 11 points better than the US average of 77.6%. That gap is worth roughly 109 fewer late arrivals for every thousand flights.

On time

88.5%

Arrivals under 15 minutes late, of 347 completed flights

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

3.84%

National rate is 1.81%

1 hour+ late

4.6%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 17 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 375 flies

DL 375 flies LIH to SEA without a single fixed slot. Its most common scheduled departure was 21:40, used on 146 of 365 flights, with 21:55 (54 flights) and 21:20 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:40146 flights40.0%
Departs 21:5554 flights14.8%
Departs 21:2050 flights13.7%

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 21:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 375 runs 18 points better at 88.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 375 next to LIH to SEA

Every carrier on LIH to SEA combined arrived on time 84.6% of the time across 1,094 flights, so DL 375 is 4 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 7 points.

DL 375 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 375	365	88.5%	78 min	3.84%	A−
All Delta Air Lines on LIH–SEA	365	88.5%	78 min	3.84%	A−
All carriers on LIH–SEA	1,094	84.6%	69 min	2.19%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 375 quarter by quarter

DL 375 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.6% on time and its weakest Oct–Dec 2025 at 76.2%, a swing of 20 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 flights96.6%
Oct–Dec 202592 flights76.2%
Jan–Mar 202690 flights86.9%
Apr–Jun 202691 flights93.3%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 375 did best on Monday at 95.9% on time and worst on Wednesday at 82.0%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 375 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 69% of the 3,099 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
69%
Carrier
15%
National Airspace System
13%
Extreme weather
3%

69% 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 3,099 reported delay minutes here, that single category outweighs weather by 24 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 3,099 delay minutes reported on DL 375.

Cancellations run at 3.84%, against 1.81% 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

Badly late arrivals are rare here: only 4.6% 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 2,700 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 375 in the data flew LIH 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 375

For a booking, the cancellation rate is the figure to plan around on DL 375: 3.84% of its 365 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.

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