Flight profile · Delta Air Lines
DL925
Anchorage (ANC) to Seattle (SEA) · scheduled 1:20 AM – 6:00 AM
How DL925 performs
995 operations, September 2023 – July 2026.
DL925 arrived on time 88.2% of the time, against 84.8% for all ANC → SEA flights, so this departure is 3.4 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 2.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 995 operations, September 2023 – July 2026 · If DL925 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL925 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 |
|---|---|---|---|---|---|
| DL925 | 88.2% | 0.10% | -16 min | 3.8% | 995 |
| Delta Air Lines on ANC → SEA | 90.3% | 0.36% | -16 min | 3.7% | 5,070 |
| All ANC → SEA flights | 84.8% | 0.85% | -8 min | 3.6% | 22,352 |
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
Why DL925 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
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for DL925 on ANC → SEA. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies DL925 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, DL925 pushed back an average of 28 minutes late; when it came in on time or early, an average of 1 minute early.
Each departure is matched to the flight the same aircraft flew into ANC just before it, using the tail number in the DOT file, 988 of 994 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| DL925 | 20% | 38% | 5% |
| Network, same turn | 23% | 40% | 9% |
The schedule leaves a long gap on the ground, which 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 DL925’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often DL925 left 15 or more minutes late is about the same as the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
From pushback to gate
When it leaves ANC late, does that still matter by the time it reaches SEA?
DL925 pushes back an average of 6.1 minutes late and reaches the gate at SEA an average of 4.5 minutes early. The 10.6 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 18.9 minutes on the taxiways at ANC, 2.6 minutes longer than a typical ANC departure in the same hour.
On arrival at SEA, DL925 spends 7.8 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 4.1 minutes shorter than a typical SEA arrival (11.9 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached SEA. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 3,511 departures from ANC scheduled in the clock hour DL925 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at SEA (510,187 flights), not just DL925’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
The hour it leaves ANC
Part of any flight’s record belongs to the clock rather than to the flight. DL925 has one departure time, so this is what that time is worth.
On-time arrival rate. 3,511 departures from ANC are scheduled in the 1 AM–2 AM hour over the period, against 58,776 across the whole day.
DL925 is scheduled out of ANC at 1:20 AM, in the 1 AM–2 AM bank. Departures from ANC in that hour arrive on time 85.7% of the time against 83.6% across the airport’s whole day, so the hour DL925 leaves in is an ordinary one for ANC and explains nothing about its record either way.
The two airport figures cover every departure from ANC to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does DL925 run worse on particular days?
Tuesday is historically the most reliable day and Monday the least, a gap of 7.6 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes DL925 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ALB→DTW Albany to Detroit | June 8, 2025 | 1 | — |
| DTW→ALB Detroit to Albany | June 8, 2025 | 1 | — |
| JFK→RSW New York to Fort Myers | May 7, 2024 – June 6, 2024 | 31 | — |
| ATL→CLE Atlanta to Cleveland | July 1, 2023 – September 4, 2023 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route DL925 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
20 min late
against a median of 16 min early
Percentiles over 995 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL853 | Delta Air Lines | 91.7% | 14 min early | 1,061 |
| AS188 | Alaska Airlines | 90.2% | 9 min early | 873 |
| DL922 | Delta Air Lines | 90.2% | 18 min early | 753 |
| DL925 this flight | Delta Air Lines | 88.2% | 16 min early | 995 |
| AS48 | Alaska Airlines | 88.0% | 9 min early | 935 |
| AS82 | Alaska Airlines | 84.5% | 5 min early | 706 |
| AS56 | Alaska Airlines | 84.2% | 6 min early | 610 |
| AS226 | Alaska Airlines | 79.9% | 3 min early | 706 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. DL925 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 995 records of DL925 operating ANC → SEA, 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 excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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