Flight number record
DL 440
Delta Air Lines · Honolulu to Seattle
- Route
- HNL → SEA
- Departs
- 22:40
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 440, check with Delta Air Lines.
DL 440 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 16 minutes early.
Set against the rest of the country, DL 440's record is 15 points better than the US average of 77.3%. That gap is worth roughly 147 fewer late arrivals for every thousand flights.
Key figures
On time
92.0%
Arrivals under 15 minutes late, of 362 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
0.82%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 16 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 440 flies
DL 440 flies HNL to SEA without a single fixed slot. Its most common scheduled departure was 22:40, used on 59 of 365 flights, with 22:45 (53 flights) and 22:30 (38 flights) next.
- Departs 22:4059 flights16.2%
- Departs 22:4553 flights14.5%
- Departs 22:3038 flights10.4%
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 22:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and DL 440 runs 22 points better at 92.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 440 next to HNL to SEA
Every carrier on HNL to SEA combined arrived on time 74.9% of the time across 2,931 flights, so DL 440 is 17 points ahead of it. Delta flew 789 flights on the same city pair under all its flight numbers, including this one, and those ran 88.7% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 440 | 365 | 92.0% | 88 min | 0.82% | A+ |
| All Delta Air Lines on HNL–SEA | 789 | 88.7% | 76 min | 1.01% | A |
| All carriers on HNL–SEA | 2,931 | 74.9% | 72 min | 1.09% | C |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 440 quarter by quarter
Quarter by quarter DL 440 held fairly steady: 96.7% in Jul–Sep 2025, 95.6% in Oct–Dec 2025, 88.8% in Jan–Mar 2026, 93.4% in Apr–Jun 2026 and 87.1% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202592 flights95.6%
- Jan–Mar 202690 flights88.8%
- Apr–Jun 202691 flights93.4%
- Jul–Sep 202662 flights87.1%
Scale runs 80% to 100%.
By weekday, DL 440 ranged from 86.3% on Saturday to 98.1% on Thursday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late DL 440 runs when it is late
DL 440 often beats the schedule: 192 of 362 completed flights, 53%, arrived 15 minutes or more early. Most of the lateness is short. 17 of the 29 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early192 flights53.0%
- Within 15 min141 flights39.0%
- 15–29 min late17 flights4.7%
- 30–59 min late4 flights1.1%
- 1–2 hours late5 flights1.4%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 362 completed flights by arrival against schedule.
A late pushback is often recovered here: of 24 departures that left 15 minutes late or more, 8 still arrived on time. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 440
The latest arrival of the period was on 4 April 2026, 13 hours 1 minute behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 April 2026 | 13 hours 1 minute | National Airspace System |
| 10 September 2025 | 11 hours 10 minutes | Carrier |
| 16 December 2025 | 2 hours 28 minutes | Late-arriving aircraft |
| 17 November 2025 | 1 hour 47 minutes | Late-arriving aircraft |
| 18 December 2025 | 1 hour 37 minutes | Late-arriving aircraft |
Delay causes
Why DL 440 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 2,539 reported delay minutes.
- 42%National Airspace System
- 32%Carrier
- 26%Late-arriving aircraft
42% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,066 minutes out of 2,539, against a national NAS share of 21%. The split is drawn from 2,539 delay minutes reported on DL 440.
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 2.2% 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 2,677 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 440 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 440
For a booking, DL 440 has one of the better records a US domestic flight can show: 92.0% on time and 0.82% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- HNL to SEA, every carrier and departure
- SEA to HNL, the return direction
- Delta Air Lines 359 on the same route84.4%
- Daniel K. Inouye International (HNL) delay statistics
- 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
- Worst months to fly in the US, ranked by the data
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.