Flight number record
YX 4395
Republic Airways · New York to Des Moines
- Route
- LGA → DSM
- Departs
- 17:40
- Flights
- 260
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s YX 4395, 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 4395 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 260 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so YX 4395 runs 11 points behind the country as a whole. Across a thousand flights that is about 113 extra late arrivals.
Key figures
On time
66.3%
Arrivals under 15 minutes late, of 243 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
5.00%
National rate is 1.81%
1 hour+ late
13.6%
National rate is 8.1%
These figures cover 260 flights between July 2025 and June 2026. Beyond the headline rate, 13.6% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When YX 4395 flies
YX 4395 flies LGA to DSM without a single fixed slot. Its most common scheduled departure was 17:40, used on 52 of 260 flights, with 17:15 (50 flights) and 19:55 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 17:4052 flights20.0%
- Departs 17:1550 flights19.2%
- Departs 19:5537 flights14.2%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 17:40 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 4395 runs level with that at 66.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
YX 4395 next to LGA to DSM
Across its whole network Republic Airways managed 78.5%, which this flight trails by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4395thin sample | 260 | 66.3% | 63 min | 5.00% | C− |
| All Republic Airways on LGA–DSMthin sample | 260 | 66.3% | 63 min | 5.00% | C− |
| All carriers on LGA–DSMthin sample | 260 | 66.3% | 63 min | 5.00% | C− |
| Republic Airways, whole network | 361,482 | 78.5% | 72 min | 4.08% | B− |
Across the year
YX 4395 quarter by quarter
YX 4395 did not run the same all year. Its best quarter was Apr–Jun 2026 at 72.7% on time and its weakest Oct–Dec 2025 at 50.0%, a swing of 23 points on roughly 65 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 202575 flights69.7%
- Oct–Dec 202554 flights50.0%
- Jan–Mar 202661 flights70.2%
- Apr–Jun 202670 flights72.7%
Scale runs 40% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, YX 4395 did best on Tuesday at 74.0% on time and worst on Wednesday at 59.6%. Each day rests on about 37 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why YX 4395 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 56% of the 5,143 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 56%Late-arriving aircraft
- 34%National Airspace System
- 6%Extreme weather
- 4%Carrier
56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 5,143 reported delay minutes here, that single category outweighs weather by 9 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 5,143 delay minutes reported on YX 4395.
Cancellations run at 5.00%, against 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 1,031 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on nine other city pairs in the data, including LGA to BTV (41), BOS to MYR (12) and MIA to OKC (6), but none flew often enough under YX 4395 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to DSM only.
One caution: this is a thin sample. 260 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 4395
For a booking, the cancellation rate is the figure to plan around on YX 4395: 5.00% of its 260 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.