Flight profile · Republic Airways
YX5643
New York (LGA) to Louisville (SDF) · scheduled 9:15 AM – 11:43 AM
How YX5643 performs
621 operations, 2024-06-07 to 2026-06-30.
YX5643 arrived on time 90.4% of the time, against 85.0% for all LGA → SDF flights — this specific departure is 5.3 percentage points better than the route as a whole. Against Republic Airways’s own flights on this route it is 5.5 points better.
Source: US DOT Bureau of Transportation Statistics · 621 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX5643 | 90.4% | 1.29% | -18 min | 2.4% | 621 |
| Republic Airways on LGA → SDF | 84.9% | 2.61% | -16 min | 6.0% | 3,794 |
| All LGA → SDF flights | 85.0% | 2.58% | -16 min | 6.0% | 4,184 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes YX5643 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 |
|---|---|---|---|
| SDF→LGA Louisville to New York | 2024-12-19 – 2026-06-30 | 284 | 83.3% |
| SDF→BOS Louisville to Boston | 2025-10-11 – 2025-12-13 | 6 | — |
| BOS→PHL Boston to Philadelphia | 2024-06-08 – 2024-07-06 | 5 | — |
| CMH→BOS Columbus to Boston | 2024-03-11 – 2024-06-06 | 56 | — |
| CHS→JFK Charleston to New York | 2024-04-09 – 2024-05-06 | 28 | — |
| JFK→CHS New York to Charleston | 2024-04-09 – 2024-05-06 | 28 | — |
| MKE→BOS Milwaukee to Boston | 2024-01-08 – 2024-03-08 | 58 | — |
| BOS→MKE Boston to Milwaukee | 2024-02-15 – 2024-03-08 | 20 | — |
| LGA→OMA New York to Omaha | 2023-09-05 – 2024-01-07 | 64 | — |
| PIT→LGA Pittsburgh to New York | 2023-12-16 – 2023-12-16 | 1 | — |
| BOS→LGA Boston to New York | 2023-11-05 – 2023-12-15 | 34 | — |
| BOS→EWR Boston to Newark | 2023-12-02 – 2023-12-02 | 1 | — |
| JFK→BOS New York to Boston | 2023-10-28 – 2023-11-04 | 8 | — |
| BOS→JFK Boston to New York | 2023-07-05 – 2023-09-04 | 42 | — |
| IND→JFK Indianapolis to New York | 2023-07-01 – 2023-09-02 | 10 | — |
Because the same number has served different journeys, the statistics above describe only the route YX5643 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 621 records of YX5643 operating LGA → SDF, 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.