Flight number record
YX 4598
Republic Airways · New York to Detroit
- Route
- LGA → DTW
- Departs
- 20:29
- Flights
- 312
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4598, check with Republic Airways. Republic Airways flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
YX 4598 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 312 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so YX 4598 runs 14 points behind the country as a whole. Across a thousand flights that is about 137 extra late arrivals.
Key figures
On time
63.6%
Arrivals under 15 minutes late, of 283 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
9.29%
National rate is 1.89%
1 hour+ late
18.7%
National rate is 8.3%
These figures cover 312 flights between September 2025 and August 2026. Beyond the headline rate, 18.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 4598 flies
YX 4598 flies LGA to DTW without a single fixed slot. Its most common scheduled departure was 20:29, used on 127 of 312 flights, with 19:59 (52 flights) and 19:45 (48 flights) next.
- Departs 20:29127 flights40.7%
- Departs 19:5952 flights16.7%
- Departs 19:4548 flights15.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 20:29 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and YX 4598 runs 6 points worse at 63.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
YX 4598 next to LGA to DTW
Every carrier on LGA to DTW combined arrived on time 77.3% of the time across 3,861 flights, so YX 4598 is 14 points behind it. Republic flew 1,052 flights on the same city pair under all its flight numbers, including this one, and those ran 74.1% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4598thin sample | 312 | 63.6% | 88 min | 9.29% | D− |
| All Republic Airways on LGA–DTW | 1,052 | 74.1% | 74 min | 5.13% | C− |
| All carriers on LGA–DTW | 3,861 | 77.3% | 83 min | 5.23% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4598 quarter by quarter
YX 4598 did not run the same all year. Its best quarter was Oct–Dec 2025 at 67.6% on time and its weakest Jul–Sep 2026 at 54.3%, a swing of 13 points on roughly 78 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights—
- Oct–Dec 202574 flights67.6%
- Jan–Mar 202673 flights60.3%
- Apr–Jun 202678 flights62.2%
- Jul–Sep 202657 flights54.3%
Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4598 did best on Tuesday at 84.1% on time and worst on Thursday at 45.2%. Each day rests on about 45 flights, so a gap of 39 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4598 runs when it is late
YX 4598 often beats the schedule: 76 of 283 completed flights, 27%, arrived 15 minutes or more early. When YX 4598 is late it tends to be very late: 53 of its 103 late arrivals were an hour or more behind, and 18 were two hours or more.
- 15+ min early76 flights26.9%
- Within 15 min104 flights36.7%
- 15–29 min late25 flights8.8%
- 30–59 min late25 flights8.8%
- 1–2 hours late35 flights12.4%
- 2+ hours late18 flights6.4%
Scale runs 0% to 100%.
Share of 283 completed flights by arrival against schedule.
11 of 87 late departures made up the time and arrived on time, 13% of them. In the other direction, 27 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DTW.
The worst days
Worst days for YX 4598
The latest arrival of the period was on 3 July 2026, 14 hours 52 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 July 2026 | 14 hours 52 minutes | Late-arriving aircraft |
| 22 June 2026 | 12 hours 3 minutes | Late-arriving aircraft |
| 11 March 2026 | 5 hours 27 minutes | Extreme weather |
| 10 November 2025 | 4 hours 26 minutes | Late-arriving aircraft |
| 20 July 2026 | 3 hours 1 minute | Late-arriving aircraft |
Delay causes
Why YX 4598 runs late
Late-arriving aircraft accounts for 69% of the 9,091 delay minutes carriers reported here, and the remaining four split what is left.
- 69%Late-arriving aircraft
- 17%National Airspace System
- 10%Carrier
- 4%Extreme weather
69% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,091 reported delay minutes here, that single category outweighs weather by 18 to one. The split is drawn from 9,091 delay minutes reported on YX 4598.
Cancellations run at 9.29%, against 1.89% nationally. That is about one flight in ten cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
18.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 502 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on one other city pair in the data, including LGA to CLE (1), but none flew often enough under YX 4598 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to DTW only.
One caution: this is a thin sample. 312 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking YX 4598
For a booking, the cancellation rate is the figure to plan around on YX 4598: 9.29% of its 312 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to DTW, every carrier and departure
- DTW to LGA, the return direction
- Delta Air Lines 1231 on the same route95.6%
- Delta Air Lines 1078 on the same route88.1%
- Delta Air Lines 1122 on the same route79.8%
- Delta Air Lines 999 on the same route73.9%
- Delta Air Lines 1014 on the same route69.3%
- LaGuardia (LGA) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Republic Airways’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.