Route profile
LAS→JFK
Flight reliability, delays and best times to fly from Las Vegas to New York, 2,248 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 35% of comparable major US routes (4,598 compared)
Calculated from 10,913 flights. How this is calculated
LAS → JFK arrives on time 78.6% of the time; the return trip, JFK → LAS, arrives on time 80.1% of the time.
LAS → JFK spends 30.8 minutes on the ground on a 2,248-mile trip: 19.2 minutes from pushback to wheels-up at LAS and 11.7 minutes from touchdown to gate at JFK.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
Reliability here swings unusually widely by season, a wider month-to-month spread than 92% of 3,357 comparable routes.
87.3% on time in a typical November, against 62.7% in July.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 3,357 in the comparison.
Why LAS → JFK flights are cancelled
July 2023 – July 2026
LAS → JFK cancelled 175 of 10,913 scheduled flights — about 1 in every 62. The reason filed most often was extreme weather, 43.4% of the cancellations coded on this route — about 1 in every 144 scheduled flights.
Share of cancellations
Of 175 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
76 cancellations, 43.4% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
67 cancellations, 38.3% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
32 cancellations, 18.3% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
175 coded cancellations were recorded on LAS → JFK; the section appears from 50.
When it goes wrong
July 2023 – July 2026
51 min late
against a median of 11 min early
LAS → JFK has an average that understates its risk: a typical arrival is 11 min early, but the worst tenth are 62 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 10,913 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at JFK after arriving from LAS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 33% | Likely to miss |
| 45 min | 21% | High risk |
| 60 min | 15% | Some risk |
| 90 min | 8.6% | Some risk |
| 120 min | 5.7% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.60% of the time and diverts 0.97% of the time, which a late arrival never shows up in.
Chance of missing is the share of 10,632 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 51 minutes late (90th-percentile gate arrival delay), over 10,913 operations.
Any other layover length: connection checker.
Best time to fly
LAS → JFK flights departing 5–9 AM arrived on time 90.8% of the time, against 72.8% for 12–3 PM departures, a gap of 18.0 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 90.7% on time from 426 flights
- 7 AM: 91.4% on time from 1,128 flights
- 8 AM: 85.7% on time from 126 flights
- 9 AM: 81.1% on time from 1,170 flights
- 10 AM: 75.9% on time from 636 flights
- 11 AM: 77.5% on time from 1,469 flights
- 12 PM: 74.8% on time from 684 flights
- 1 PM: 71.0% on time from 479 flights
- 2 PM: 71.7% on time from 476 flights
- 3 PM: 76.5% on time from 1,159 flights
- 4 PM to 8 PM: too few flights to score
- 9 PM: 80.4% on time from 773 flights
- 10 PM: 81.4% on time from 804 flights
- 11 PM: 72.6% on time from 1,404 flights
Departure windows with fewer than 120 flights are not scored.
Why LAS → JFK runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for LAS → JFK. Only delays of 15 minutes or more are attributed.
How this route holds up in bad weather
July 2023 – July 2026
Bad weather raises cancellations by a similar amount at both ends of LAS to JFK: 2.4 times the normal rate at LAS and 3.5 times at JFK. Cancelled in bad weather against normal hours: LAS 2.0% against 0.8%, JFK 6.0% against 1.7%. Flights that did leave LAS in bad weather arrived on time 58.5% of the time, against 78.5% in normal hours.
Bad weather and normal hours at the airports
Scheduled departures, July 2023 – July 2026| Departures from | LAS | JFK |
|---|---|---|
| Cancelled in bad weather | 2.0% | 6.0% |
| Cancelled in normal hours | 0.8% | 1.7% |
| Arrived on time, bad weather | 58.5% | 64.1% |
| Arrived on time, normal hours | 78.5% | 79.7% |
| Departures in bad weather | 14,522 | 46,497 |
Of the carriers on this route, American Airlines (0.9% cancelled against 1.9% for the other carriers at LAS) cancelled the fewest departures from LAS in bad weather and Frontier Airlines (4.0% cancelled against 1.8% for the other carriers at LAS) the most. One more carrier flies this route but has too few bad-weather departures from LAS to compare.
This route’s airlines in bad weather at LAS
All departures from LAS| Airline | Bad-weather departures | Cancelled | Other carriers |
|---|---|---|---|
| American Airlines | 1,081 | 0.9%below the others | 1.9% |
| Delta Air Lines | 1,240 | 1.1%below the others | 2.0% |
| Frontier Airlines | 943 | 4.0%above the others | 1.8% |
These are airport figures, not route figures: every scheduled departure from LAS and JFK, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from LAS on every route.
Weather source and limits. In full: LAS (airlines), JFK, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Delta Air Lines | 5,267 | 82.5% | 1.42% | -13 min | 6.3% |
| JetBlue | 4,343 | 73.8% | 1.96% | -8 min | 11.9% |
| American Airlines | 777 | 77.1% | 1.54% | -10 min | 10.3% |
| Frontier Airlines | 524 | 81.8% | 0.57% | -11 min | 4.8% |
Delta Air Lines flew 48.3% of the 10,911 flights listed. JetBlue cancelled 1.96% of its flights here against 0.57% for Frontier Airlines.
Delta Air Lines arrived on time 8.7 percentage points more often than JetBlue on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
DL510 (7:00 AM) arrived on time 93.3% of the time, 21.4 points more often than B6948 (11:59 PM) at 71.9%.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 9.7 percentage points.
By month
- Jan: 84.7%
- Feb: 81.8%
- Mar: 80.3%
- Apr: 83.0%
- May: 78.2%
- Jun: 71.3%
- Jul: 62.7%
- Aug: 77.0%
- Sep: 76.7%
- Oct: 81.3%
- Nov: 87.3%
- Dec: 83.0%
July is historically the weakest month and November the strongest, a spread of 24.6 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 46.7% from 248 flights
- August 2023: 69.9% from 223 flights
- September 2023: 64.7% from 263 flights
- October 2023: 73.7% from 297 flights
- November 2023: 82.9% from 258 flights
- December 2023: 83.6% from 214 flights
- January 2024: 79.6% from 214 flights
- February 2024: 81.9% from 226 flights
- March 2024: 83.3% from 231 flights
- April 2024: 78.5% from 253 flights
- May 2024: 78.8% from 297 flights
- June 2024: 70.8% from 269 flights
- July 2024: 68.4% from 265 flights
- August 2024: 74.0% from 285 flights
- September 2024: 82.7% from 315 flights
- October 2024: 83.6% from 362 flights
- November 2024: 93.6% from 328 flights
- December 2024: 82.5% from 308 flights
- January 2025: 89.3% from 319 flights
- February 2025: 80.8% from 309 flights
- March 2025: 82.2% from 356 flights
- April 2025: 83.7% from 359 flights
- May 2025: 70.6% from 360 flights
- June 2025: 64.1% from 323 flights
- July 2025: 64.1% from 322 flights
- August 2025: 84.8% from 314 flights
- September 2025: 80.1% from 336 flights
- October 2025: 85.5% from 344 flights
- November 2025: 84.2% from 304 flights
- December 2025: 83.2% from 285 flights
- January 2026: 83.2% from 293 flights
- February 2026: 83.2% from 248 flights
- March 2026: 75.7% from 299 flights
- April 2026: 85.8% from 319 flights
- May 2026: 86.3% from 329 flights
- June 2026: 78.8% from 317 flights
- July 2026: 68.9% from 321 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 81.6% against 79.3% in the 12 months before — improving by 2.3 percentage points.
Data and methodology
Calculated by FlyerIntel from 10,913 LAS → JFK flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed