Flight profile · Republic Airways
YX4354
Chicago (ORD) to Raleigh–Durham (RDU) · scheduled 8:30 AM – 11:42 AM
How YX4354 performs
501 operations, 2023-08-15 to 2026-06-30.
YX4354 arrived on time 87.6% of the time, against 77.1% for all ORD → RDU flights — this specific departure is 10.5 percentage points better than the route as a whole. Against Republic Airways’s own flights on this route it is 6.9 points better.
Source: US DOT Bureau of Transportation Statistics · 501 operations between 2023-08-15 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| YX4354 | 87.6% | 0.40% | -10 min | 4.2% | 501 |
| Republic Airways on ORD → RDU | 80.7% | 1.75% | -8 min | 6.9% | 2,052 |
| All ORD → RDU flights | 77.1% | 1.30% | -5 min | 8.7% | 9,723 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-08-15 to 2026-06-30
Other routes YX4354 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 |
|---|---|---|---|
| LGA→ORD New York to Chicago | 2026-05-07 – 2026-05-07 | 1 | — |
| LGA→OMA New York to Omaha | 2026-05-03 – 2026-05-03 | 1 | — |
| OMA→LGA Omaha to New York | 2026-05-03 – 2026-05-03 | 1 | — |
| SDF→LGA Louisville to New York | 2026-04-30 – 2026-05-01 | 2 | — |
| LGA→AGS New York to Augusta | 2026-04-07 – 2026-04-13 | 6 | — |
| LGA→BNA New York to Nashville | 2026-03-08 – 2026-04-06 | 30 | — |
| DCA→PVD Washington to Providence/Warwick | 2026-02-12 – 2026-03-06 | 20 | — |
| PVD→DCA Providence/Warwick to Washington | 2026-02-12 – 2026-03-06 | 20 | — |
| MSN→ORD Madison to Chicago | 2026-01-06 – 2026-02-11 | 36 | — |
| ORD→MSN Chicago to Madison | 2026-01-06 – 2026-02-11 | 36 | — |
| ORD→SRQ Chicago to Sarasota/Bradenton | 2025-12-18 – 2026-01-05 | 16 | — |
| SRQ→ORD Sarasota/Bradenton to Chicago | 2025-12-18 – 2026-01-05 | 16 | — |
| RIC→LGA Richmond to New York | 2025-12-03 – 2025-12-17 | 15 | — |
| LGA→ORF New York to Norfolk | 2025-11-02 – 2025-12-02 | 30 | — |
| LGA→CLE New York to Cleveland | 2025-05-05 – 2025-06-04 | 27 | — |
| JFK→PIT New York to Pittsburgh | 2025-04-04 – 2025-05-04 | 31 | — |
| PIT→JFK Pittsburgh to New York | 2025-04-04 – 2025-05-04 | 31 | — |
| BOS→DCA Boston to Washington | 2025-03-09 – 2025-03-30 | 4 | — |
| DCA→BTV Washington to Burlington | 2025-03-08 – 2025-03-29 | 4 | — |
| JAX→DCA Jacksonville to Washington | 2025-02-13 – 2025-02-13 | 1 | — |
| DSM→ORD Des Moines to Chicago | 2025-01-07 – 2025-01-07 | 1 | — |
| LGA→TYS New York to Knoxville/Maryville | 2024-12-05 – 2024-12-18 | 14 | — |
| PVD→ORD Providence/Warwick to Chicago | 2024-11-06 – 2024-12-04 | 28 | — |
| TYS→ORD Knoxville/Maryville to Chicago | 2024-11-05 – 2024-11-05 | 1 | — |
| LGA→MEM New York to Memphis | 2024-04-04 – 2024-09-03 | 149 | 81.0% |
| MEM→LGA Memphis to New York | 2024-04-04 – 2024-09-03 | 131 | 77.0% |
| TUL→DCA Tulsa to Washington | 2023-07-01 – 2023-08-14 | 43 | — |
Because the same number has served different journeys, the statistics above describe only the route YX4354 currently operates. Blending them would produce an average of two different flights.
Why YX4354 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for YX4354 on ORD → RDU. 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 ORD → RDU
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1502 | United Airlines | 82.6% | 5 min early | 773 |
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 501 records of YX4354 operating ORD → RDU, 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.