Flight profile · Delta Air Lines
DL1643
New York (JFK) to Austin (AUS) · scheduled 1:59 PM – 5:44 PM
How DL1643 performs
400 operations, 2025-01-06 to 2026-06-30.
DL1643 arrived on time 84.2% of the time, against 79.5% for all JFK → AUS flights — this specific departure is 4.6 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 3.1 points better.
Source: US DOT Bureau of Transportation Statistics · 400 operations between 2025-01-06 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1643 | 84.2% | 0.50% | -18 min | 5.5% | 400 |
| Delta Air Lines on JFK → AUS | 81.0% | 1.69% | -12 min | 6.4% | 3,852 |
| All JFK → AUS flights | 79.5% | 1.92% | -11 min | 7.9% | 6,928 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-01-06 to 2026-06-30
Other routes DL1643 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 |
|---|---|---|---|
| AUS→JFK Austin to New York | 2025-06-08 – 2026-06-30 | 248 | 78.0% |
| LAS→LAX Las Vegas to Los Angeles | 2026-03-08 – 2026-04-12 | 36 | — |
| SEA→LAX Seattle to Los Angeles | 2026-02-12 – 2026-03-07 | 24 | — |
| SFO→ATL San Francisco to Atlanta | 2026-01-19 – 2026-02-09 | 13 | — |
| ATL→FLL Atlanta to Fort Lauderdale | 2024-12-19 – 2026-01-04 | 30 | — |
| MSP→SRQ Minneapolis to Sarasota/Bradenton | 2025-01-11 – 2025-03-08 | 9 | — |
| SRQ→MSP Sarasota/Bradenton to Minneapolis | 2025-01-11 – 2025-03-08 | 9 | — |
| ATL→HSV Atlanta to Huntsville | 2024-11-11 – 2024-12-18 | 36 | — |
| HSV→ATL Huntsville to Atlanta | 2024-11-11 – 2024-12-18 | 36 | — |
| TPA→LGA Tampa to New York | 2024-10-07 – 2024-11-10 | 35 | — |
| ATL→CHS Atlanta to Charleston | 2024-07-08 – 2024-10-05 | 55 | — |
| MSP→BZN Minneapolis to Bozeman | 2024-06-08 – 2024-07-06 | 10 | — |
| ATL→DAL Atlanta to Dallas | 2024-05-07 – 2024-06-06 | 31 | — |
| LAX→LAS Los Angeles to Las Vegas | 2024-04-09 – 2024-05-06 | 28 | — |
| JAX→JFK Jacksonville to New York | 2024-03-10 – 2024-04-08 | 30 | — |
| JFK→JAX New York to Jacksonville | 2024-03-10 – 2024-04-08 | 30 | — |
| MSP→PHX Minneapolis to Phoenix | 2024-01-08 – 2024-03-09 | 62 | — |
| MSY→ATL New Orleans to Atlanta | 2024-01-03 – 2024-01-07 | 5 | — |
| GRR→MSP Grand Rapids to Minneapolis | 2023-11-05 – 2023-12-06 | 11 | — |
| MSP→GRR Minneapolis to Grand Rapids | 2023-11-05 – 2023-12-06 | 11 | — |
| ATL→PHL Atlanta to Philadelphia | 2023-11-11 – 2023-12-02 | 4 | — |
| BOS→BNA Boston to Nashville | 2023-11-22 – 2023-11-22 | 1 | — |
| SRQ→ATL Sarasota/Bradenton to Atlanta | 2023-10-09 – 2023-10-27 | 19 | — |
| MCO→SLC Orlando to Salt Lake City | 2023-09-09 – 2023-10-08 | 30 | — |
| LGA→ORD New York to Chicago | 2023-07-02 – 2023-09-08 | 57 | — |
| ORD→LGA Chicago to New York | 2023-07-02 – 2023-09-08 | 56 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1643 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 400 records of DL1643 operating JFK → AUS, 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.