Carrier route record
DLLAS→JFK
Delta Air Lines · Las Vegas to New York
- Flights
- 1,676
- Period
- July 2025 to June 2026
- Share of route
- 45%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on LAS to JFK earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 1,676 flights. The strongest carrier on the route with a full sample, JetBlue Airways, flew 1,373 at 78.6% on time.
Set against the rest of the country, Delta's LAS to JFK record is 7 points better than the US average of 77.6%. That gap is worth roughly 66 fewer late arrivals for every thousand flights.
Key figures
On time
84.2%
Arrivals under 15 minutes late, of 1,624 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
2.45%
National rate is 1.81%
Whole route
81.3%
Every carrier on LAS to JFK, 3,710 flights
These figures cover 1,676 flights between July 2025 and June 2026. The median arrival is 14 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 LAS to JFK
Delta flew 1,676 of the 3,710 flights on LAS to JFK, about 45% of it. Its 84.2% on time is 3 points better than the route as a whole, which runs 81.3%. Ranked by on-time rate it is first of four carriers on the route, where the range runs from Delta at 84.2% to American at 78.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: half a point separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 1,676 | 84.2% | 78 min | 2.45% | B |
| Frontier Airlinesthin sample | 202 | 81.5% | 57 min | 0.99% | B+ |
| JetBlue Airways | 1,373 | 78.6% | 92 min | 2.77% | B |
| American Airlines | 459 | 78.6% | 107 min | 1.74% | B |
No carrier stands out. JetBlue tops the table at 78.6%, half a point clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
Delta flight numbers on LAS to JFK
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–8am365 flights95.5%
- 8am–11am365 flights82.3%
- 11am–2pm354 flights79.6%
- 2pm–5pm329 flights79.5%
- 5pm–8pm—
- 8pm–5am263 flights82.8%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 95.5% of the time, against 79.5% 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 5am–8am window is the busiest, with 365 flights scheduled in it.
Across the year
Delta on LAS to JFK through the year
July is the worst month at 64.4% on time, 27 points below February, the best at 91.5%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. January was the busiest month here, with 151 flights.
Across the week, Saturday is the strongest day at 90.9% on time and Monday the weakest at 78.1%. 13 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Delta runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 20,000 reported delay minutes.
- 35%Carrier
- 32%Late-arriving aircraft
- 29%National Airspace System
- 4%Extreme weather
- 0%Security
The largest share of delay minutes, 35%, 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 6,902 of the 20,000 delay minutes reported here. The split is drawn from 19,925 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 95.5% on time here.
Cancellations sit at 2.45% against a national 1.81%, which is ordinary. Diversions add another 0.66%.
Connections and stage length
What a delay here costs
6.3% 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 a little over an hour, which a normal layover absorbs.
At 2,248 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 78.5% on time across 1,676 flights, 6 points below 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 6 points of difference.
The sample behind these figures is 1,676 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 LAS to JFK
Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 91.5% on time and July 64.4%, a swing of 27 points. If the dates move at all, move them out of July before you think about anything else. 1,624 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to JFK, every carrier
- Delta on JFK to LAS, the return leg
- Frontier Airlines on LAS to JFK81.5%
- JetBlue Airways on LAS to JFK78.6%
- American Airlines on LAS to JFK78.6%
- Delta Air Lines network-wide record
- Harry Reid International (LAS) delay statistics
- John F. Kennedy International (JFK) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.