Flight number record
YX 4477
Republic Airways · Detroit to New York
- Route
- DTW → LGA
- Departs
- 06:00
- Flights
- 344
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4477, 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 4477 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 344 flights, with a median arrival 7 minutes early.
Set against the rest of the country, YX 4477's record is 8 points better than the US average of 77.3%. That gap is worth roughly 80 fewer late arrivals for every thousand flights.
Key figures
On time
85.3%
Arrivals under 15 minutes late, of 327 completed flights
Avg delay
69 min
Across delayed arrivals only, not all flights
Cancelled
4.65%
National rate is 1.89%
1 hour+ late
3.4%
National rate is 8.3%
These figures cover 344 flights between September 2025 and August 2026. The median arrival is 7 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When YX 4477 flies
YX 4477 flies DTW to LGA without a single fixed slot. Its most common scheduled departure was 06:00, used on 157 of 344 flights.
- Departs 06:00157 flights45.6%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 4477 runs 4 points worse at 85.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
YX 4477 next to DTW to LGA
Every carrier on DTW to LGA combined arrived on time 74.7% of the time across 3,862 flights, so YX 4477 is 11 points ahead of it. Republic flew 1,052 flights on the same city pair under all its flight numbers, including this one, and those ran 76.8% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4477thin sample | 344 | 85.3% | 69 min | 4.65% | A− |
| All Republic Airways on DTW–LGA | 1,052 | 76.8% | 80 min | 5.80% | B− |
| All carriers on DTW–LGA | 3,862 | 74.7% | 76 min | 5.44% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4477 quarter by quarter
Quarter by quarter YX 4477 held fairly steady: 81.8% in Oct–Dec 2025, 81.8% in Jan–Mar 2026, 86.5% in Apr–Jun 2026 and 87.3% in Jul–Sep 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202580 flights81.8%
- Jan–Mar 202685 flights81.8%
- Apr–Jun 202691 flights86.5%
- Jul–Sep 202658 flights87.3%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4477 ranged from 80.9% on Friday to 90.2% on Sunday. With about 49 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late YX 4477 runs when it is late
YX 4477 often beats the schedule: 94 of 327 completed flights, 29%, arrived 15 minutes or more early. The 48 late arrivals split 21 under half an hour, 16 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early94 flights28.7%
- Within 15 min185 flights56.6%
- 15–29 min late21 flights6.4%
- 30–59 min late16 flights4.9%
- 1–2 hours late3 flights0.9%
- 2+ hours late8 flights2.4%
Scale runs 0% to 100%.
Share of 327 completed flights by arrival against schedule.
3 of 24 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 LGA.
The worst days
Worst days for YX 4477
The latest arrival of the period was on 27 January 2026, 9 hours 51 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 January 2026 | 9 hours 51 minutes | Carrier |
| 25 February 2026 | 6 hours 32 minutes | Carrier |
| 4 July 2026 | 5 hours 20 minutes | Late-arriving aircraft |
| 11 August 2026 | 3 hours 29 minutes | Carrier |
| 16 December 2025 | 2 hours 45 minutes | Carrier |
Delay causes
Why YX 4477 runs late
Carrier accounts for 63% of the 3,325 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Carrier
- 26%National Airspace System
- 11%Late-arriving aircraft
- 1%Extreme weather
The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,087 of the 3,325 delay minutes reported here. The split is drawn from 3,325 delay minutes reported on YX 4477.
Cancellations run at 4.65%, against 1.89% nationally. That is about one flight in twenty 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
Badly late arrivals are rare here: only 3.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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.
Every one of the 344 flights under YX 4477 in the data flew DTW to LGA. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 344 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 4477
For a booking, the cancellation rate is the figure to plan around on YX 4477: 4.65% of its 344 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DTW to LGA, every carrier and departure
- LGA to DTW, the return direction
- Delta Air Lines 2589 on the same route85.3%
- Delta Air Lines 2602 on the same route74.9%
- Delta Air Lines 2603 on the same route72.4%
- Delta Air Lines 1487 on the same route87.9%
- Delta Air Lines 2604 on the same route58.7%
- Detroit Metropolitan Wayne County (DTW) delay statistics
- LaGuardia (LGA) 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
- What a cancellation rate actually tells you (and what it hides)
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.