Carrier route record
DLDTW→LAS
Delta Air Lines · Detroit to Las Vegas
- Flights
- 1,897
- Period
- July 2025 to June 2026
- Share of route
- 67%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on DTW to LAS sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 1,897 flights, with a median arrival 2 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Delta on DTW to LAS from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
75.9%
Arrivals under 15 minutes late, of 1,886 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.53%
National rate is 1.81%
Whole route
76.1%
Every carrier on DTW to LAS, 2,843 flights
These figures cover 1,897 flights between July 2025 and June 2026. The median arrival is 2 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.
Carrier by carrier
Delta against every carrier on DTW to LAS
Delta flew 1,897 of the 2,843 flights on DTW to LAS, most of the route. Its 75.9% on time is about level with the route as a whole at 76.1%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Spirit at 81.1% to Frontier at 62.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 564 | 81.1% | 51 min | 0.71% | B+ |
| Delta Air Lines (this page) | 1,897 | 75.9% | 60 min | 0.53% | B+ |
| Southwest Airlinesthin sample | 337 | 70.8% | 42 min | 0.00% | C+ |
| Frontier Airlinesthin sample | 45 | 62.2% | 62 min | 0.00% | D+ |
Flight by flight
Delta flight numbers on DTW to LAS
Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am94 flights87.1%
- 8am–11am453 flights80.8%
- 11am–2pm361 flights77.8%
- 2pm–5pm313 flights71.5%
- 5pm–8pm335 flights71.9%
- 8pm–5am341 flights72.5%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.1% of the time, against 71.5% for the afternoon window. That is 16 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 453 flights scheduled in it.
Across the year
Delta on DTW to LAS through the year
January is the weak month at 65.9% on time, against 86.4% in October. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. May was the busiest month here, with 184 flights.
Across the week, Tuesday is the strongest day at 78.6% on time and Sunday the weakest at 72.2%. 6 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Delta runs late on this route
One category carries most of the weight here. Carrier accounts for 52% of the 27,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 52%Carrier
- 26%National Airspace System
- 16%Late-arriving aircraft
- 5%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 14,000 of the 27,000 delay minutes reported here. The split is drawn from 27,414 reported delay minutes.
Cancellations are rare at 0.53%, below the national 1.81% 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 stage length
What a delay here costs
7.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
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 return leg is a different operation and performs like one: it runs 84.4% on time across 1,894 flights, 9 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 9 points of difference.
The sample behind these figures is 1,897 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Delta on DTW to LAS
Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 86.4% on time and January 65.9%, a swing of 21 points. If the dates move at all, move them out of January before you think about anything else. 1,886 completed flights over 12 months sit behind that.
Related
Where to go next
- DTW to LAS, every carrier
- Delta on LAS to DTW, the return leg
- Spirit Airlines on DTW to LAS81.1%
- Southwest Airlines on DTW to LAS70.8%
- Delta Air Lines network-wide record
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Harry Reid International (LAS) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.