Flight number record
YX 4451
Republic Airways · Richmond to New York
- Route
- RIC → LGA
- Departs
- 06:00
- Flights
- 307
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4451, 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 4451 earns a B−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 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 307 flights, with a median arrival 10 minutes early.
Set against the rest of the country, YX 4451's record is 7 points better than the US average of 77.3%. That gap is worth roughly 72 fewer late arrivals for every thousand flights.
Key figures
On time
84.5%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
3.58%
National rate is 1.89%
1 hour+ late
6.4%
National rate is 8.3%
These figures cover 307 flights between September 2025 and August 2026. The median arrival is 10 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 4451 flies
YX 4451 flies RIC to LGA without a single fixed slot. Its most common scheduled departure was 06:00, used on 89 of 307 flights, with 06:10 (69 flights) next.
- Departs 06:0089 flights29.0%
- Departs 06:1069 flights22.5%
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 4451 runs 5 points worse at 84.5%. 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 4451 next to RIC to LGA
Every carrier on RIC to LGA combined arrived on time 73.8% of the time across 2,280 flights, so YX 4451 is 11 points ahead of it. Republic flew 2,192 flights on the same city pair under all its flight numbers, including this one, and those ran 74.8% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4451thin sample | 307 | 84.5% | 78 min | 3.58% | B− |
| All Republic Airways on RIC–LGA | 2,192 | 74.8% | 85 min | 6.30% | C− |
| All carriers on RIC–LGA | 2,280 | 73.8% | 85 min | 6.18% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4451 quarter by quarter
YX 4451 did not run the same all year. Its best quarter was Apr–Jun 2026 at 89.9% on time and its weakest Oct–Dec 2025 at 75.9%, a swing of 14 points on roughly 77 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 202526 flights—
- Oct–Dec 202583 flights75.9%
- Jan–Mar 202673 flights83.3%
- Apr–Jun 202671 flights89.9%
- Jul–Sep 202654 flights88.5%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4451 did best on Wednesday at 90.0% on time and worst on Tuesday at 76.5%. Each day rests on about 44 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4451 runs when it is late
YX 4451 often beats the schedule: 108 of 296 completed flights, 36%, arrived 15 minutes or more early. The 46 late arrivals split 13 under half an hour, 14 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early108 flights36.5%
- Within 15 min142 flights48.0%
- 15–29 min late13 flights4.4%
- 30–59 min late14 flights4.7%
- 1–2 hours late8 flights2.7%
- 2+ hours late11 flights3.7%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 28 departures that left 15 minutes late or more, only 2 made it up before arrival. In the other direction, 20 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 4451
The latest arrival of the period was on 3 July 2026, 5 hours 52 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across July, December, September and October, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 July 2026 | 5 hours 52 minutes | National Airspace System |
| 5 December 2025 | 4 hours 45 minutes | Extreme weather |
| 18 September 2025 | 3 hours 26 minutes | Late-arriving aircraft |
| 7 October 2025 | 3 hours 18 minutes | Late-arriving aircraft |
| 2 December 2025 | 3 hours 7 minutes | Carrier |
Delay causes
Why YX 4451 runs late
National Airspace System accounts for 45% of the 3,588 delay minutes carriers reported here, and the remaining four split what is left.
- 45%National Airspace System
- 35%Carrier
- 10%Late-arriving aircraft
- 9%Extreme weather
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,259 of the 3,588 delay minutes reported here. The split is drawn from 3,588 delay minutes reported on YX 4451.
Cancellations run at 3.58%, against 1.89% nationally. That is about one flight in 30 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
6.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including MYR to LGA (8) and BNA to ORD (2), but none flew often enough under YX 4451 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RIC to LGA only.
One caution: this is a thin sample. 307 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 4451
For a booking, the cancellation rate is the figure to plan around on YX 4451: 3.58% of its 307 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
- RIC to LGA, every carrier and departure
- LGA to RIC, the return direction
- 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.