Flight number record
DL 2619
Delta Air Lines · Salt Lake City to Milwaukee
- Route
- SLC → MKE
- Departs
- 17:45
- Flights
- 346
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2619, check with Delta Air Lines.
DL 2619 lands a B+, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 346 flights, with a median arrival 8 minutes early.
Key figures
On time
80.7%
Arrivals under 15 minutes late, of 342 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
0.87%
National rate is 1.89%
1 hour+ late
7.9%
National rate is 8.3%
These figures cover 346 flights between September 2025 and August 2026. The median arrival is 8 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 2619 flies
DL 2619 flies SLC to MKE without a single fixed slot. Its most common scheduled departure was 17:45, used on 125 of 346 flights, with 17:25 (48 flights) and 17:10 (38 flights) next.
- Departs 17:45125 flights36.1%
- Departs 17:2548 flights13.9%
- Departs 17:1038 flights11.0%
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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 2619 runs 13 points better at 80.7%. 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 2619 next to SLC to MKE
Every carrier on SLC to MKE combined arrived on time 81.1% of the time across 363 flights, so DL 2619 is about level with it. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2619thin sample | 346 | 80.7% | 90 min | 0.87% | B+ |
| All Delta Air Lines on SLC–MKEthin sample | 347 | 80.8% | 90 min | 0.86% | B+ |
| All carriers on SLC–MKEthin sample | 363 | 81.1% | 93 min | 0.83% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2619 quarter by quarter
DL 2619 did not run the same all year. Its best quarter was Jan–Mar 2026 at 89.3% on time and its weakest Jul–Sep 2026 at 71.0%, a swing of 18 points on roughly 87 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202529 flights—
- Oct–Dec 202578 flights79.2%
- Jan–Mar 202686 flights89.3%
- Apr–Jun 202691 flights80.0%
- Jul–Sep 202662 flights71.0%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2619 ranged from 74.5% on Sunday to 86.0% on Tuesday. With about 49 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 2619 runs when it is late
DL 2619 often beats the schedule: 93 of 342 completed flights, 27%, arrived 15 minutes or more early. The 66 late arrivals split 23 under half an hour, 16 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early93 flights27.2%
- Within 15 min183 flights53.5%
- 15–29 min late23 flights6.7%
- 30–59 min late16 flights4.7%
- 1–2 hours late13 flights3.8%
- 2+ hours late14 flights4.1%
Scale runs 0% to 100%.
Share of 342 completed flights by arrival against schedule.
14 of 71 late departures made up the time and arrived on time, 20% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for DL 2619
The latest arrival of the period was on 12 April 2026, 14 hours 56 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 April 2026 | 14 hours 56 minutes | Carrier |
| 31 March 2026 | 12 hours 18 minutes | Extreme weather |
| 4 February 2026 | 3 hours 41 minutes | Carrier |
| 8 August 2026 | 3 hours 14 minutes | Carrier |
| 26 April 2026 | 3 hours 5 minutes | Carrier |
Delay causes
Why DL 2619 runs late
Carrier accounts for 65% of the 5,951 delay minutes carriers reported here, and the remaining four split what is left.
- 65%Carrier
- 17%Late-arriving aircraft
- 12%Extreme weather
- 6%National Airspace System
Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.1 times the usual weather exposure. The split is drawn from 5,951 delay minutes reported on DL 2619.
Cancellations are rare at 0.87%, 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
7.9% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
The 1,247 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on one other city pair in the data, including DFW to DTW (16), but none flew often enough under DL 2619 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to MKE only.
One caution: this is a thin sample. 346 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 2619
For a booking, read DL 2619 as 80.7% on time with 0.87% cancelled over 346 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Salt Lake City International (SLC) delay statistics
- Milwaukee Mitchell International (MKE) 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.