Flight number record
DL 544
Delta Air Lines · Detroit to Las Vegas
- Route
- DTW → LAS
- Departs
- 18:30
- Flights
- 292
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 544, check with Delta Air Lines.
DL 544 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 292 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so DL 544 runs 9 points behind the country as a whole. Across a thousand flights that is about 86 extra late arrivals.
Key figures
On time
68.7%
Arrivals under 15 minutes late, of 291 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
0.34%
National rate is 1.89%
1 hour+ late
14.8%
National rate is 8.3%
These figures cover 292 flights between September 2025 and August 2026. Beyond the headline rate, 14.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 544 flies
DL 544 flies DTW to LAS without a single fixed slot. Its most common scheduled departure was 18:30, used on 89 of 292 flights, with 18:59 (60 flights) and 18:40 (57 flights) next.
- Departs 18:3089 flights30.5%
- Departs 18:5960 flights20.5%
- Departs 18:4057 flights19.5%
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 18:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 544 runs level with that at 68.7%. 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 544 next to DTW to LAS
Every carrier on DTW to LAS combined arrived on time 73.6% of the time across 2,768 flights, so DL 544 is 5 points behind it. Delta flew 1,880 flights on the same city pair under all its flight numbers, including this one, and those ran 73.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 544thin sample | 292 | 68.7% | 69 min | 0.34% | C+ |
| All Delta Air Lines on DTW–LAS | 1,880 | 73.8% | 63 min | 0.59% | C+ |
| All carriers on DTW–LAS | 2,768 | 73.6% | 59 min | 0.61% | C+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 544 quarter by quarter
DL 544 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.5% on time and its weakest Jul–Sep 2026 at 59.3%, a swing of 18 points on roughly 73 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 202515 flights—
- Oct–Dec 202544 flights70.5%
- Jan–Mar 202689 flights65.2%
- Apr–Jun 202690 flights77.5%
- Jul–Sep 202654 flights59.3%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 544 did best on Wednesday at 83.3% on time and worst on Monday at 58.3%. Each day rests on about 42 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 544 runs when it is late
The 91 late arrivals split 23 under half an hour, 25 between 30 and 60 minutes, and 43 an hour or more.
- 15+ min early60 flights20.6%
- Within 15 min140 flights48.1%
- 15–29 min late23 flights7.9%
- 30–59 min late25 flights8.6%
- 1–2 hours late28 flights9.6%
- 2+ hours late15 flights5.2%
Scale runs 0% to 100%.
Share of 291 completed flights by arrival against schedule.
15 of 94 late departures made up the time and arrived on time, 16% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for DL 544
The latest arrival of the period was on 24 July 2026, 3 hours 2 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 |
|---|---|---|
| 24 July 2026 | 3 hours 2 minutes | Carrier |
| 19 May 2026 | 2 hours 59 minutes | Carrier |
| 13 March 2026 | 2 hours 58 minutes | Extreme weather |
| 28 July 2026 | 2 hours 51 minutes | Carrier |
| 23 January 2026 | 2 hours 48 minutes | Carrier |
Delay causes
Why DL 544 runs late
Carrier accounts for 48% of the 6,231 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Carrier
- 26%Late-arriving aircraft
- 21%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,007 of the 6,231 delay minutes reported here. The split is drawn from 6,231 delay minutes reported on DL 544.
Cancellations are rare at 0.34%, 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
14.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,749 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on one other city pair in the data, including LAS to SLC (10), but none flew often enough under DL 544 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DTW to LAS only.
One caution: this is a thin sample. 292 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 544
For a booking, DL 544 is a flight to put a long connection behind. 14.8% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- DTW to LAS, every carrier and departure
- LAS to DTW, the return direction
- Delta Air Lines 334 on the same route79.4%
- Delta Air Lines 421 on the same route72.4%
- Delta Air Lines 766 on the same route70.8%
- Delta Air Lines 916 on the same route70.0%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Harry Reid International (LAS) 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
- How often a connection fails at the major US hubs
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.