Flight profile · Delta Air Lines
DL310
Honolulu (HNL) to Detroit (DTW) · scheduled 2:45 PM – 6:30 AM
How DL310 performs
607 operations, September 2024 – August 2026.
Between its first and last recorded date on HNL → DTW, DL310 averaged about 6 operations a week (607 in 720 days, cancelled ones included).
DL310 arrived on time 82.5% of the time, against 81.2% for all HNL → DTW flights, so this departure is 1.3 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 1.3 points better.
Source: US DOT Bureau of Transportation Statistics · 607 operations, September 2024 – August 2026 · If DL310 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL310 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL310 | 82.5% | 1.15% | -7 min | 4.0% | 607 |
| Delta Air Lines on HNL → DTW | 81.2% | 0.90% | -7 min | 6.2% | 1,003 |
| All HNL → DTW flights | 81.2% | 0.90% | -7 min | 6.2% | 1,003 |
DL310 cancelled 7 of 607 operations (1.15%), close to the 0.90% for HNL → DTW.
4.0% of DL310’s arrivals were an hour or more late, against 6.2% across HNL → DTW, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – August 2026
Why DL310 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL310 on HNL → DTW. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies DL310 comes in late, and what that does to the departure.
The aircraft flying DL310 came in 15 or more minutes late on 14% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into HNL: 576 of 605 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| DL310 | 14% |
| Network, same turn | 23% |
A long gap on the ground gives a late aircraft room to catch up before this flight pushes back.
The network row is every flight with a scheduled turn of 90 minutes to 3 hours. How often DL310’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – August 2026
From pushback to gate
When it leaves HNL late, does that still matter by the time it reaches DTW?
DL310 pushes back an average of 6.4 minutes late and reaches the gate at DTW an average of 1.1 minutes early. The 7.6 minutes between those two figures are slack the published schedule already carries, so on average a late pushback on this flight is made up before the gate. It spends 19.9 minutes on the taxiways at HNL, 2.3 minutes longer than a typical HNL departure in the same hour.
On arrival at DTW, DL310 spends 9.7 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at DTW spends on the ground before reaching the gate.
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 13,792 HNL departures. Taxi-in is landing to gate, set against 398,786 arrivals at DTW. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – August 2026
The hour it leaves HNL
DL310 has one departure time, 2:45 PM, so this is what that hour at HNL is worth.
On-time arrival rate. 13,792 departures from HNL are scheduled in the 2 PM–3 PM hour over the period, against 191,167 across the whole day.
DL310 is scheduled out of HNL at 2:45 PM, in the 2 PM–3 PM bank. Departures from HNL in that hour arrive on time 78.8% of the time against 85.2% across the airport’s whole day — the slot alone is worth 6.4 points worse before anything about this particular flight is considered.
Both airport figures cover every destination from HNL, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2024 – August 2026 · Hours below 120 departures are not scored.
Other routes DL310 has flown
Carriers reassign flight numbers. DL310 also served these 2 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SEA→HNL Seattle to Honolulu | July 1, 2023 – September 8, 2024 | 436 | 85.0% |
| HNL→SEA Honolulu to Seattle | July 1, 2023 – January 7, 2024 | 132 | 95.4% |
The figures above describe only HNL → DTW, the route DL310 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
27 min late
against a median of 7 min early
Percentiles over 607 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2024 – August 2026
Data and methodology
Calculated by FlyerIntel from 607 records of DL310 operating HNL → DTW, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed