Flight number record
DL 864
Delta Air Lines · Las Vegas to Detroit
- Route
- LAS → DTW
- Departs
- 06:00
- Flights
- 359
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 864, check with Delta Air Lines.
DL 864 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 359 flights, with a median arrival 9 minutes early.
Set against the rest of the country, DL 864's record is 15 points better than the US average of 77.3%. That gap is worth roughly 151 fewer late arrivals for every thousand flights.
Key figures
On time
92.4%
Arrivals under 15 minutes late, of 357 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.28%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 359 flights between September 2025 and August 2026. The median arrival is 9 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 864 flies
DL 864 flies LAS to DTW without a single fixed slot. Its most common scheduled departure was 06:00, used on 204 of 359 flights, with 05:50 (86 flights) and 06:05 (45 flights) next.
- Departs 06:00204 flights56.8%
- Departs 05:5086 flights24.0%
- Departs 06:0545 flights12.5%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 864 runs 3 points better at 92.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
DL 864 next to LAS to DTW
Every carrier on LAS to DTW combined arrived on time 80.6% of the time across 2,765 flights, so DL 864 is 12 points ahead of it. Delta flew 1,877 flights on the same city pair under all its flight numbers, including this one, and those ran 83.8% on time. Across its whole network Delta Air Lines managed 81.1%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 864thin sample | 359 | 92.4% | 62 min | 0.28% | A+ |
| All Delta Air Lines on LAS–DTW | 1,877 | 83.8% | 74 min | 0.64% | B+ |
| All carriers on LAS–DTW | 2,765 | 80.6% | 70 min | 0.76% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 864 quarter by quarter
DL 864 did not run the same all year. Its best quarter was Apr–Jun 2026 at 97.7% on time and its weakest Jul–Sep 2026 at 83.9%, a swing of 14 points on roughly 72 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 202530 flights93.3%
- Oct–Dec 202592 flights90.1%
- Jan–Mar 202686 flights95.3%
- Apr–Jun 202689 flights97.7%
- Jul–Sep 202662 flights83.9%
Scale runs 75% to 100%.
By weekday, DL 864 did best on Tuesday at 100.0% on time and worst on Saturday at 84.6%. Each day rests on about 51 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 864 runs when it is late
DL 864 often beats the schedule: 104 of 357 completed flights, 29%, arrived 15 minutes or more early. Most of the lateness is short. 16 of the 27 late arrivals were under half an hour behind, and 8 reached an hour or more.
- 15+ min early104 flights29.1%
- Within 15 min226 flights63.3%
- 15–29 min late16 flights4.5%
- 30–59 min late3 flights0.8%
- 1–2 hours late4 flights1.1%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 357 completed flights by arrival against schedule.
A late pushback is often recovered here: of 23 departures that left 15 minutes late or more, 9 still arrived on time. 13 flights left on time and still arrived late.
The worst days
Worst days for DL 864
The latest arrival of the period was on 17 January 2026, 7 hours 40 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 |
|---|---|---|
| 17 January 2026 | 7 hours 40 minutes | Carrier |
| 21 December 2025 | 3 hours 8 minutes | Carrier |
| 4 May 2026 | 2 hours 48 minutes | Late-arriving aircraft |
| 18 March 2026 | 2 hours 9 minutes | Carrier |
| 25 September 2025 | 1 hour 14 minutes | Carrier |
Delay causes
Why DL 864 runs late
Carrier accounts for 63% of the 1,670 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Carrier
- 24%National Airspace System
- 10%Late-arriving aircraft
- 4%Extreme weather
The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,044 of the 1,670 delay minutes reported here. The split is drawn from 1,670 delay minutes reported on DL 864.
Cancellations are rare at 0.28%, 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
Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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.
Every one of the 359 flights under DL 864 in the data flew LAS to DTW. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 359 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 864
For a booking, DL 864 has one of the better records a US domestic flight can show: 92.4% on time and 0.28% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAS to DTW, every carrier and departure
- DTW to LAS, the return direction
- Delta Air Lines 470 on the same route90.0%
- Harry Reid International (LAS) delay statistics
- Detroit Metropolitan Wayne County (DTW) 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.