Flight profile · Delta Air Lines
DL2079
Salt Lake City (SLC) to Baltimore (BWI) · scheduled 11:40 PM – 6:00 AM
How DL2079 performs
775 operations, June 2024 – July 2026.
DL2079 arrived on time 75.7% of the time, against 78.8% for all SLC → BWI flights, so this departure is 3.1 percentage points worse than the route as a whole. Against Delta Air Lines’ own flights on this route it is 3.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 775 operations, June 2024 – July 2026 · If DL2079 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where DL2079 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 |
|---|---|---|---|---|---|
| DL2079 | 75.7% | 1.29% | 0 min | 3.5% | 775 |
| Delta Air Lines on SLC → BWI | 78.9% | 0.90% | -2 min | 2.7% | 1,116 |
| All SLC → BWI flights | 78.8% | 0.83% | -3 min | 3.4% | 2,277 |
Source: FlyerIntel analysis of US DOT BTS data · June 2024 – July 2026
Why DL2079 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
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL2079 on SLC → BWI. 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 DL2079 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, DL2079 pushed back an average of 19 minutes late; when it came in on time or early, an average of 3 minutes early.
Each departure is matched to the flight the same aircraft flew into SLC just before it, using the tail number in the DOT file, 734 of 765 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 |
|---|---|---|---|
| DL2079 | 20% | 36% | 7% |
| 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 DL2079’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often DL2079 left 15 or more minutes late is lower than 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 June 2024 – July 2026
From pushback to gate
When it leaves SLC late, does that still matter by the time it reaches BWI?
On arrival at BWI, DL2079 spends 18.3 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 12.3 minutes longer than a typical BWI arrival (6.0 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 BWI. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 17,470 departures from SLC scheduled in the clock hour DL2079 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at BWI (299,179 flights), not just DL2079’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. DL2079 has one departure time, so this is what that time is worth.
On-time arrival rate. 17,470 departures from SLC are scheduled in the 11 PM–12 AM hour over the period, against 355,300 across the whole day.
DL2079 is scheduled out of SLC at 11:40 PM, in the 11 PM–12 AM bank. Departures from SLC in that hour arrive on time 83.1% of the time against 84.0% across the airport’s whole day, so the hour DL2079 leaves in is an ordinary one for SLC and explains nothing about its record either way.
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 DL2079 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 |
|---|---|---|---|
| RDU→MSP Raleigh–Durham to Minneapolis | December 31, 2024 | 1 | — |
| EWR→DTW Newark to Detroit | July 1, 2023 – June 6, 2024 | 222 | 88.3% |
| BOS→PBI Boston to West Palm Beach | April 9, 2024 – May 6, 2024 | 28 | — |
| PBI→BOS West Palm Beach to Boston | April 9, 2024 – May 6, 2024 | 28 | — |
| LGA→TPA New York to Tampa | January 8, 2024 – April 8, 2024 | 92 | 90.0% |
| TPA→LGA Tampa to New York | January 8, 2024 – April 8, 2024 | 92 | 84.6% |
Because the same number has served different journeys, the statistics above describe only the route DL2079 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.
30 min late
against a median of 0 min early
Percentiles over 775 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering June 2024 – July 2026
Data and methodology
Calculated by FlyerIntel from 775 records of DL2079 operating SLC → BWI, 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