Flight number record
DL 375
Delta Air Lines · Lihue to Seattle
- Route
- LIH → SEA
- Departs
- 21:55
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. 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 77.3%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.
Key figures
On time
88.0%
Arrivals under 15 minutes late, of 349 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
3.29%
National rate is 1.89%
1 hour+ late
4.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 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.
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Schedule
When DL 375 flies
DL 375 flies LIH to SEA without a single fixed slot. Its most common scheduled departure was 21:55, used on 115 of 365 flights, with 21:40 (84 flights) and 21:20 (50 flights) next.
- Departs 21:55115 flights31.5%
- Departs 21:4084 flights23.0%
- Departs 21:2050 flights13.7%
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 21:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 375 runs 18 points better at 88.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
DL 375 next to LIH to SEA
Every carrier on LIH to SEA combined arrived on time 83.5% of the time across 1,094 flights, so DL 375 is 5 points ahead of it. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 375 | 365 | 88.0% | 77 min | 3.29% | A− |
| All Delta Air Lines on LIH–SEA | 365 | 88.0% | 77 min | 3.29% | A− |
| All carriers on LIH–SEA | 1,094 | 83.5% | 62 min | 2.10% | B |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 375 quarter by quarter
DL 375 did not run the same all year. Its best quarter was Jul–Sep 2026 at 93.5% on time and its weakest Oct–Dec 2025 at 76.2%, a swing of 17 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 202530 flights—
- Oct–Dec 202592 flights76.2%
- Jan–Mar 202690 flights86.9%
- Apr–Jun 202691 flights93.3%
- Jul–Sep 202662 flights93.5%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, DL 375 did best on Monday at 96.0% on time and worst on Wednesday at 82.4%. 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 375 runs when it is late
DL 375 often beats the schedule: 192 of 349 completed flights, 55%, arrived 15 minutes or more early. The 42 late arrivals split 16 under half an hour, 9 between 30 and 60 minutes, and 17 an hour or more.
- 15+ min early192 flights55.0%
- Within 15 min115 flights33.0%
- 15–29 min late16 flights4.6%
- 30–59 min late9 flights2.6%
- 1–2 hours late8 flights2.3%
- 2+ hours late9 flights2.6%
Scale runs 0% to 100%.
Share of 349 completed flights by arrival against schedule.
10 of 43 late departures made up the time and arrived on time, 23% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 375
The latest arrival of the period was on 26 November 2025, 4 hours 24 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Four of the five worst days fell in December 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 November 2025 | 4 hours 24 minutes | Late-arriving aircraft |
| 12 December 2025 | 4 hours 4 minutes | Late-arriving aircraft |
| 31 December 2025 | 3 hours 53 minutes | Late-arriving aircraft |
| 18 December 2025 | 3 hours 12 minutes | Late-arriving aircraft |
| 7 December 2025 | 3 hours 5 minutes | Late-arriving aircraft |
Delay causes
Why DL 375 runs late
Late-arriving aircraft accounts for 67% of the 3,222 delay minutes carriers reported here, and the remaining four split what is left.
- 67%Late-arriving aircraft
- 17%Carrier
- 13%National Airspace System
- 3%Extreme weather
67% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,222 reported delay minutes here, that single category outweighs weather by 24 to one. The split is drawn from 3,222 delay minutes reported on DL 375.
Cancellations run at 3.29%, against 1.89% nationally. That is about one flight in 30 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 4.9% 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 2,700 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: 3.29% 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.
Related
Where to go next
- LIH to SEA, every carrier and departure
- SEA to LIH, the return direction
- Alaska Airlines 213 on the same route81.7%
- Alaska Airlines 234 on the same route79.6%
- Seattle-Tacoma International (SEA) 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.