Flight profile · Delta Air Lines
DL424
New York (JFK) to Denver (DEN) · scheduled 7:55 PM – 10:46 PM
How DL424 performs
568 operations, 2024-01-14 to 2026-06-30.
DL424 arrived on time 70.8% of the time, against 74.2% for all JFK → DEN flights — this specific departure is 3.3 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 7.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 568 operations between 2024-01-14 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL424 | 70.8% | 2.29% | -7 min | 13.5% | 568 |
| Delta Air Lines on JFK → DEN | 78.1% | 1.77% | -10 min | 8.6% | 2,828 |
| All JFK → DEN flights | 74.2% | 1.84% | -6 min | 10.2% | 4,515 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-14 to 2026-06-30
Other routes DL424 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| DEN→JFK Denver to New York | 2024-12-19 – 2026-04-12 | 36 | — |
| ILM→ATL Wilmington to Atlanta | 2026-01-05 – 2026-03-07 | 62 | — |
| ATL→GPT Atlanta to Gulfport | 2025-12-24 – 2026-01-01 | 4 | — |
| BOS→MCI Boston to Kansas City | 2025-05-10 – 2025-06-07 | 5 | — |
| LAS→ATL Las Vegas to Atlanta | 2025-05-07 – 2025-06-06 | 27 | — |
| SJC→SLC San Jose to Salt Lake City | 2025-04-14 – 2025-05-06 | 20 | — |
| BNA→SLC Nashville to Salt Lake City | 2025-04-19 – 2025-05-03 | 3 | — |
| IAH→MSP Houston to Minneapolis | 2025-03-09 – 2025-04-13 | 36 | — |
| SEA→CVG Seattle to Cincinnati / Covington | 2025-01-06 – 2025-03-06 | 36 | — |
| ATL→BUF Atlanta to Buffalo | 2025-02-22 – 2025-02-22 | 1 | — |
| BUF→ATL Buffalo to Atlanta | 2025-02-22 – 2025-02-22 | 1 | — |
| MIA→JFK Miami to New York | 2025-01-05 – 2025-01-05 | 1 | — |
| LAS→BOS Las Vegas to Boston | 2024-05-07 – 2024-06-06 | 31 | — |
| SLC→LGA Salt Lake City to New York | 2024-03-16 – 2024-03-30 | 3 | — |
| JFK→SFO New York to San Francisco | 2024-01-10 – 2024-01-11 | 2 | — |
| SFO→JFK San Francisco to New York | 2024-01-10 – 2024-01-11 | 2 | — |
| LAX→MSP Los Angeles to Minneapolis | 2023-07-01 – 2024-01-07 | 119 | 90.7% |
| BOS→MSP Boston to Minneapolis | 2023-11-23 – 2023-11-23 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL424 currently operates. Blending them would produce an average of two different flights.
Why DL424 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — 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
Share of the delay minutes US DOT attributed to each cause for DL424 on JFK → DEN. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on JFK → DEN
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL532 | Delta Air Lines | 86.0% | 11 min early | 679 |
| B697 | JetBlue | 61.0% | 2 min late | 940 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 568 records of DL424 operating JFK → DEN, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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