Flight number record
YX 4345
Republic Airways · New York to Richmond
- Route
- LGA → RIC
- Departs
- 21:29
- Flights
- 299
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4345, 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 4345 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 299 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so YX 4345 runs 14 points behind the country as a whole. Across a thousand flights that is about 136 extra late arrivals.
Key figures
On time
63.7%
Arrivals under 15 minutes late, of 267 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
10.70%
National rate is 1.89%
1 hour+ late
15.7%
National rate is 8.3%
These figures cover 299 flights between September 2025 and August 2026. Beyond the headline rate, 15.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 4345 flies
YX 4345 flies LGA to RIC without a single fixed slot. Its most common scheduled departure was 21:29, used on 93 of 299 flights, with 20:29 (32 flights) and 20:26 (30 flights) next.
- Departs 21:2993 flights31.1%
- Departs 20:2932 flights10.7%
- Departs 20:2630 flights10.0%
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 21:29 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and YX 4345 runs 6 points worse at 63.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
YX 4345 next to LGA to RIC
Every carrier on LGA to RIC combined arrived on time 74.7% of the time across 2,278 flights, so YX 4345 is 11 points behind it. Republic flew 2,190 flights on the same city pair under all its flight numbers, including this one, and those ran 75.0% 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 4345thin sample | 299 | 63.7% | 78 min | 10.70% | D− |
| All Republic Airways on LGA–RIC | 2,190 | 75.0% | 66 min | 7.35% | B− |
| All carriers on LGA–RIC | 2,278 | 74.7% | 67 min | 7.16% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4345 quarter by quarter
YX 4345 did not run the same all year. Its best quarter was Apr–Jun 2026 at 68.8% on time and its weakest Oct–Dec 2025 at 57.7%, a swing of 11 points on roughly 75 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 202576 flights57.7%
- Jan–Mar 202674 flights64.1%
- Apr–Jun 202670 flights68.8%
- Jul–Sep 202653 flights58.1%
Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4345 did best on Friday at 71.1% on time and worst on Sunday at 56.8%. Each day rests on about 43 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4345 runs when it is late
YX 4345 often beats the schedule: 78 of 267 completed flights, 29%, arrived 15 minutes or more early. The 97 late arrivals split 24 under half an hour, 31 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early78 flights29.2%
- Within 15 min92 flights34.5%
- 15–29 min late24 flights9.0%
- 30–59 min late31 flights11.6%
- 1–2 hours late28 flights10.5%
- 2+ hours late14 flights5.2%
Scale runs 0% to 100%.
Share of 267 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 81 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 24 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 RIC.
The worst days
Worst days for YX 4345
The latest arrival of the period was on 3 July 2026, 14 hours 50 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, September, August and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 July 2026 | 14 hours 50 minutes | Late-arriving aircraft |
| 7 September 2025 | 9 hours 36 minutes | Carrier |
| 11 August 2026 | 3 hours 40 minutes | Carrier |
| 16 August 2026 | 3 hours 38 minutes | National Airspace System |
| 24 March 2026 | 3 hours 30 minutes | Late-arriving aircraft |
Delay causes
Why YX 4345 runs late
Late-arriving aircraft accounts for 62% of the 7,513 delay minutes carriers reported here, and the remaining four split what is left.
- 62%Late-arriving aircraft
- 19%Carrier
- 17%National Airspace System
- 2%Extreme weather
- 0%Security
62% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,513 reported delay minutes here, that single category outweighs weather by 38 to one. The split is drawn from 7,513 delay minutes reported on YX 4345.
Cancellations run at 10.70%, against 1.89% nationally. That is about one flight in nine 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
15.7% 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 same number turns up on fourteen other city pairs in the data, including LGA to MYR (12), JFK to PIT (8) and PIT to JFK (8), but none flew often enough under YX 4345 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to RIC only.
One caution: this is a thin sample. 299 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 4345
For a booking, the cancellation rate is the figure to plan around on YX 4345: 10.70% of its 299 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
- LGA to RIC, every carrier and departure
- RIC to LGA, 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
- 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.