Flight profile · Republic Airways
YX5619
Boston (BOS) to Milwaukee (MKE) · scheduled 5:15 PM – 7:02 PM
How YX5619 performs
534 operations, 2024-03-16 to 2026-06-30.
YX5619 arrived on time 77.1% of the time, against 83.6% for all BOS → MKE flights — this specific departure is 6.5 percentage points worse than the route as a whole. Against Republic Airways’s own flights on this route it is 8.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 534 operations between 2024-03-16 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX5619 | 77.1% | 4.12% | -8 min | 9.0% | 534 |
| Republic Airways on BOS → MKE | 85.9% | 2.22% | -10 min | 4.6% | 1,618 |
| All BOS → MKE flights | 83.6% | 1.60% | -9 min | 6.0% | 2,431 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-03-16 to 2026-06-30
Other routes YX5619 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 |
|---|---|---|---|
| MKE→BOS Milwaukee to Boston | 2024-06-07 – 2026-06-30 | 477 | 77.8% |
| JFK→IND New York to Indianapolis | 2024-12-19 – 2026-01-03 | 24 | — |
| STL→JFK St. Louis to New York | 2025-12-19 – 2025-12-19 | 1 | — |
| GSO→LGA Greensboro to New York | 2025-07-12 – 2025-10-04 | 13 | — |
| LGA→GSO New York to Greensboro | 2025-08-16 – 2025-10-04 | 8 | — |
| RIC→LGA Richmond to New York | 2025-05-10 – 2025-06-07 | 6 | — |
| IND→JFK Indianapolis to New York | 2024-12-19 – 2025-01-04 | 17 | — |
| DTW→CLE Detroit to Cleveland | 2024-11-16 – 2024-12-14 | 4 | — |
| PIT→DTW Pittsburgh to Detroit | 2024-11-28 – 2024-11-29 | 2 | — |
| SYR→JFK Syracuse to New York | 2024-11-03 – 2024-11-10 | 8 | — |
| CMH→DTW Columbus to Detroit | 2024-06-08 – 2024-07-06 | 11 | — |
| BOS→DCA Boston to Washington | 2024-05-07 – 2024-06-06 | 27 | — |
| CLT→LGA Charlotte to New York | 2023-12-16 – 2024-05-04 | 10 | — |
| DTW→ORD Detroit to Chicago | 2024-02-15 – 2024-03-08 | 19 | — |
| ORD→DTW Chicago to Detroit | 2024-02-15 – 2024-03-08 | 19 | — |
| BOS→SDF Boston to Louisville | 2024-01-14 – 2024-02-18 | 3 | — |
| SDF→BOS Louisville to Boston | 2024-01-14 – 2024-02-18 | 3 | — |
| JFK→BUF New York to Buffalo | 2024-01-08 – 2024-01-08 | 1 | — |
| JFK→ORF New York to Norfolk | 2023-12-24 – 2024-01-06 | 8 | — |
| LGA→CLT New York to Charlotte | 2023-12-16 – 2023-12-22 | 7 | — |
| CLE→BOS Cleveland to Boston | 2023-11-05 – 2023-12-06 | 26 | — |
| BOS→CLE Boston to Cleveland | 2023-11-05 – 2023-12-03 | 23 | — |
| LGA→CMH New York to Columbus | 2023-10-28 – 2023-11-04 | 8 | — |
| PHL→BOS Philadelphia to Boston | 2023-07-09 – 2023-10-27 | 71 | — |
| BOS→PHL Boston to Philadelphia | 2023-07-02 – 2023-09-04 | 59 | — |
Because the same number has served different journeys, the statistics above describe only the route YX5619 currently operates. Blending them would produce an average of two different flights.
Why YX5619 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
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 YX5619 on BOS → MKE. 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 BOS → MKE
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX5614 | Republic Airways | 90.6% | 10 min early | 638 |
| B62229 | JetBlue | 77.2% | 7 min early | 624 |
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 534 records of YX5619 operating BOS → MKE, 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.