Flight profile · Republic Airways
YX4738
Buffalo (BUF) to New York (LGA) · scheduled 12:27 PM – 12:30 PM
How YX4738 performs
729 operations, July 2023 – August 2026.
Between its first and last recorded date on BUF → LGA, YX4738 averaged about 4 operations a week (729 in 1,157 days, cancelled ones included).
YX4738 arrived on time 83.6% of the time, level with the 83.0% for all BUF → LGA flights: on arrival punctuality it is a typical departure on this route, neither better nor worse.
Source: US DOT Bureau of Transportation Statistics · 729 operations, July 2023 – August 2026 · If YX4738 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX4738 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| YX4738 | 83.6% | 2.61% | -8 min | 5.1% | 729 |
| Republic Airways on BUF → LGA | 82.2% | 4.55% | -8 min | 7.3% | 4,421 |
| All BUF → LGA flights | 83.0% | 4.38% | -10 min | 7.4% | 5,939 |
YX4738 has cancelled 2.61% of its scheduled departures (19 of 729), against 4.38% for all BUF → LGA flights — this specific departure cancels 1.8 percentage points less often than the route as a whole. Different flight numbers on the same route can carry different aircraft, crews and schedules, so this is a fact about YX4738 specifically, not about the route it flies.
5.1% of YX4738’s arrivals were an hour or more late, against 7.4% across BUF → LGA, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
Why YX4738 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 and fueling, all 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 YX4738 on BUF → LGA. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies YX4738 comes in late, and what that does to the departure.
The aircraft flying YX4738 came in 15 or more minutes late on 16% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Matched by tail number to the aircraft’s previous flight into BUF: 638 of 712 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| YX4738 | 16% |
| Network, same turn | 18% |
Little slack sits between the inbound landing and this departure, so a late arrival has almost nowhere to go but into the departure.
The network row is every flight with a scheduled turn of 30 to 44 minutes. How often YX4738’s aircraft landed 15 or more minutes late is about the same as the network’s. There are not enough departures in both groups to compare how it left.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
From pushback to gate
When it leaves BUF late, does that still matter by the time it reaches LGA?
YX4738 pushes back an average of 4.7 minutes late and reaches the gate at LGA an average of 0.9 minutes late. The 3.8 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. Its 15.3 minutes on the taxiways at BUF is about what any departure from the airport in that hour spends.
On arrival at LGA, YX4738 spends 8.1 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is about what any arrival at LGA spends on the ground before reaching the gate.
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 5,118 BUF departures. Taxi-in is landing to gate, set against 467,477 arrivals at LGA. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
The hour it leaves BUF
YX4738 has one departure time, 12:27 PM, so this is what that hour at BUF is worth.
On-time arrival rate. 5,118 departures from BUF are scheduled in the 12 PM–1 PM hour over the period, against 67,459 across the whole day.
YX4738 is scheduled out of BUF at 12:27 PM, in the 12 PM–1 PM bank. Departures from BUF in that hour arrive on time 79.2% of the time against 79.2% across the airport’s whole day, so the hour YX4738 leaves in is an ordinary one for BUF and explains nothing about its record either way.
Both airport figures cover every destination from BUF, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Hours below 120 departures are not scored.
Other routes YX4738 has flown
Carriers reassign flight numbers. YX4738 also served these 9 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| LGA→BUF New York to Buffalo | July 5, 2023 – August 31, 2026 | 606 | 83.9% |
| BOS→ILM Boston to Wilmington | May 21, 2026 – August 4, 2026 | 76 | — |
| ILM→BOS Wilmington to Boston | May 21, 2026 – August 4, 2026 | 74 | — |
| MSN→ORD Madison to Chicago | April 7, 2026 – May 20, 2026 | 44 | — |
| ORD→MSN Chicago to Madison | April 7, 2026 – May 20, 2026 | 44 | — |
| STL→LGA St. Louis to New York | October 6–31, 2025 | 23 | — |
| MIA→LIT Miami to Little Rock | September 6, 2025 – October 4, 2025 | 5 | — |
| AVL→LGA Asheville to New York | October 11, 2024 – November 3, 2024 | 8 | — |
| LGA→AVL New York to Asheville | October 11, 2024 – November 3, 2024 | 8 | — |
The figures above describe only BUF → LGA, the route YX4738 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
30 min late
against a median of 8 min early
Percentiles over 729 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX4737 | Republic Airways | 88.5% | 9 min early | 679 |
| YX4738 this flight | Republic Airways | 83.6% | 8 min early | 729 |
| YX4496 | Republic Airways | 75.1% | 5 min early | 835 |
Among all 3 departures on this route with at least 600 operations, YX4738 has the 2nd highest on-time rate, 4.9 points behind the best. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 729 records of YX4738 operating BUF → LGA, 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 reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed