Flight profile · Delta Air Lines
DL2874
Salt Lake City (SLC) to Seattle (SEA) · scheduled 8:00 AM – 9:15 AM
How DL2874 performs
785 operations, June 2024 – July 2026.
DL2874 arrived on time 92.2% of the time, against 80.7% for all SLC → SEA flights, so this departure is 11.5 percentage points better than the route as a whole. Against Delta Air Lines’ own flights on this route it is 7.5 points better.
Source: US DOT Bureau of Transportation Statistics · 785 operations, June 2024 – July 2026 · If DL2874 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How DL2874 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the SLC → SEA route as a whole, better than 93% of 11,788 comparable flight numbers.
92.2% on time for this specific departure, against 80.7% for every SLC → SEA flight.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where DL2874 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
Ask for the position of DL2874 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| DL2874 | 92.2% | 0.25% | -11 min | 3.1% | 785 |
| Delta Air Lines on SLC → SEA | 84.7% | 0.38% | -9 min | 3.8% | 6,825 |
| All SLC → SEA flights | 80.7% | 0.67% | -6 min | 4.2% | 12,345 |
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
Why DL2874 runs late
Where US DOT attributed the delay minutes on this flight.
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
the inbound aircraft was late, so this flight started late
Share of the delay minutes US DOT attributed to each cause for DL2874 on SLC → SEA. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies DL2874 comes in late, and what that does to the departure.
DL2874 is usually the aircraft’s first flight of the day: the schedule gives it a median of 9.5 hours on the ground at SLC, so its “inbound” is mostly the aircraft’s arrival the evening before.
The aircraft flying DL2874 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.
Each departure is matched to the flight the same aircraft flew into SLC just before it, using the tail number in the DOT file, 576 of 783 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 |
|---|---|
| DL2874 | 14% |
| Network, same turn | 29% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often DL2874’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.
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 June 2024 – July 2026
From pushback to gate
When it leaves SLC late, does that still matter by the time it reaches SEA?
DL2874 pushes back an average of 1.8 minutes late and reaches the gate at SEA an average of 6.4 minutes early. The 8.2 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. Its 21.6 minutes on the taxiways at SLC is about what any departure from the airport in that hour spends.
On arrival at SEA, DL2874 spends 11.9 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 SEA spends on the ground before reaching the gate.
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 22,898 departures from SLC scheduled in the clock hour DL2874 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 DL2874’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
The hour it leaves SLC
Part of any flight’s record belongs to the clock rather than to the flight. DL2874 has one departure time, so this is what that time is worth.
On-time arrival rate. 22,898 departures from SLC are scheduled in the 8 AM–9 AM hour over the period, against 355,300 across the whole day.
DL2874 is scheduled out of SLC at 8:00 AM, in the 8 AM–9 AM bank. Departures from SLC in that hour arrive on time 87.6% of the time against 84.0% across the airport’s whole day — the slot alone is worth 3.6 points better before anything about this particular flight is considered.
The two airport figures cover every departure from SLC 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 · June 2024 – July 2026 · Hours below 120 departures are not scored.
Other routes DL2874 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 |
|---|---|---|---|
| STL→SLC St. Louis to Salt Lake City | July 1, 2023 – June 6, 2024 | 120 | 98.3% |
| FAR→MSP Fargo to Minneapolis | May 2–5, 2024 | 2 | — |
| MSP→FAR Minneapolis to Fargo | May 2–5, 2024 | 2 | — |
| MSP→BIS Minneapolis to Bismarck | April 13, 2024 – May 4, 2024 | 4 | — |
| AUS→SLC Austin to Salt Lake City | April 9–10, 2024 | 2 | — |
| DTW→RSW Detroit to Fort Myers | September 5, 2023 – December 15, 2023 | 102 | 92.2% |
| RSW→DTW Fort Myers to Detroit | November 24, 2023 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2874 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.
11 min late
against a median of 11 min early
Percentiles over 785 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL2874 this flight | Delta Air Lines | 92.2% | 11 min early | 785 |
| DL2995 | Delta Air Lines | 87.8% | 9 min early | 785 |
| DL2998 | Delta Air Lines | 87.1% | 13 min early | 632 |
| DL871 | Delta Air Lines | 84.8% | 9 min early | 730 |
| AS631 | Alaska Airlines | 84.3% | 8 min early | 620 |
| DL2817 | Delta Air Lines | 78.2% | 6 min early | 783 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. DL2874 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 785 records of DL2874 operating SLC → 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