Flight profile · Republic Airways
YX4551
Washington (DCA) to New York (JFK) · scheduled 6:00 AM – 1:59 PM
How YX4551 performs
638 operations, 2023-07-01 to 2026-06-30.
YX4551 arrived on time 80.4% of the time, against 78.9% for all DCA → JFK flights — this specific departure is 1.5 percentage points better than the route as a whole. Against Republic Airways’s own flights on this route it is 1.5 points better.
Source: US DOT Bureau of Transportation Statistics · 638 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX4551 | 80.4% | 1.41% | -8 min | 5.6% | 638 |
| Republic Airways on DCA → JFK | 78.9% | 4.47% | -8 min | 8.1% | 6,556 |
| All DCA → JFK flights | 78.9% | 4.31% | -8 min | 8.2% | 7,502 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes YX4551 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 |
|---|---|---|---|
| ORD→LGA Chicago to New York | 2025-12-26 – 2026-04-06 | 93 | 76.3% |
| BOS→PHL Boston to Philadelphia | 2025-02-15 – 2026-04-04 | 11 | — |
| BDL→ORD Hartford to Chicago | 2025-12-03 – 2025-12-17 | 15 | — |
| GRR→DCA Grand Rapids to Washington | 2025-11-23 – 2025-11-30 | 2 | — |
| CMH→ORD Columbus to Chicago | 2025-11-27 – 2025-11-27 | 1 | — |
| STL→ORD St. Louis to Chicago | 2025-11-03 – 2025-11-19 | 17 | — |
| ORD→STL Chicago to St. Louis | 2025-03-06 – 2025-04-03 | 29 | — |
| PVD→PHL Providence/Warwick to Philadelphia | 2025-01-07 – 2025-02-12 | 12 | — |
| ORD→IND Chicago to Indianapolis | 2025-01-04 – 2025-01-04 | 1 | — |
| BTV→PHL Burlington to Philadelphia | 2024-12-05 – 2024-12-18 | 12 | — |
| PHL→BTV Philadelphia to Burlington | 2024-12-05 – 2024-12-18 | 12 | — |
| CHS→PHL Charleston to Philadelphia | 2024-11-30 – 2024-11-30 | 1 | — |
| PHL→SBN Philadelphia to South Bend | 2024-11-08 – 2024-11-10 | 2 | — |
| SBN→PHL South Bend to Philadelphia | 2024-11-08 – 2024-11-10 | 2 | — |
| PHL→RDU Philadelphia to Raleigh–Durham | 2024-03-05 – 2024-04-03 | 26 | — |
| RDU→PHL Raleigh–Durham to Philadelphia | 2024-03-05 – 2024-04-03 | 26 | — |
| ORD→SDF Chicago to Louisville | 2024-01-10 – 2024-02-14 | 6 | — |
| SDF→ORD Louisville to Chicago | 2024-01-10 – 2024-02-14 | 6 | — |
| DCA→PIT Washington to Pittsburgh | 2023-12-19 – 2023-12-19 | 1 | — |
| PHL→SYR Philadelphia to Syracuse | 2023-12-16 – 2023-12-16 | 1 | — |
| SYR→PHL Syracuse to Philadelphia | 2023-12-16 – 2023-12-16 | 1 | — |
| GSO→PHL Greensboro to Philadelphia | 2023-11-05 – 2023-12-04 | 26 | — |
| PHL→GSO Philadelphia to Greensboro | 2023-11-05 – 2023-12-04 | 26 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4551 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 638 records of YX4551 operating DCA → JFK, 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.