Flight number record
YX 5635
Republic Airways · New York to Indianapolis
- Route
- LGA → IND
- Departs
- 17:30
- Flights
- 308
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5635, 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 5635 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 308 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.6%, so YX 5635 runs 5 points behind the country as a whole. Across a thousand flights that is about 49 extra late arrivals.
Key figures
On time
72.7%
Arrivals under 15 minutes late, of 289 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
6.17%
National rate is 1.81%
1 hour+ late
11.4%
National rate is 8.1%
These figures cover 308 flights between July 2025 and June 2026. Beyond the headline rate, 11.4% 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 5635 flies
YX 5635 flies LGA to IND without a single fixed slot. Its most common scheduled departure was 17:30, used on 159 of 308 flights, with 17:35 (62 flights) and 17:50 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 17:30159 flights51.6%
- Departs 17:3562 flights20.1%
- Departs 17:5031 flights10.1%
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 17:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 5635 runs 5 points better at 72.7%. 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 5635 next to LGA to IND
Every carrier on LGA to IND combined arrived on time 76.6% of the time across 2,506 flights, so YX 5635 is 4 points behind it. Republic flew 2,499 flights on the same city pair under all its flight numbers, including this one, and those ran 76.6% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5635thin sample | 308 | 72.7% | 79 min | 6.17% | C− |
| All Republic Airways on LGA–IND | 2,499 | 76.6% | 77 min | 5.28% | B− |
| All carriers on LGA–IND | 2,506 | 76.6% | 77 min | 5.27% | B− |
| Republic Airways, whole network | 361,482 | 78.5% | 72 min | 4.08% | B− |
Across the year
YX 5635 quarter by quarter
YX 5635 did not run the same all year. Its best quarter was Apr–Jun 2026 at 76.7% on time and its weakest Oct–Dec 2025 at 65.8%, a swing of 11 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 202579 flights76.4%
- Oct–Dec 202577 flights65.8%
- Jan–Mar 202674 flights72.1%
- Apr–Jun 202678 flights76.7%
Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5635 did best on Tuesday at 79.2% on time and worst on Thursday at 66.0%. Each day rests on about 44 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Delay causes
Why YX 5635 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 6,214 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.
- 49%Late-arriving aircraft
- 32%Carrier
- 19%National Airspace System
- 0%Extreme weather
49% 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 6,214 reported delay minutes here, that single category outweighs weather by 49 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 6,214 delay minutes reported on YX 5635.
Cancellations run at 6.17%, against 1.81% nationally. That is roughly one flight in fifteen 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. 11.4% 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 660 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 three other city pairs in the data, including BNA to LGA (16), DTW to GRR (8) and GRR to DTW (8), but none flew often enough under YX 5635 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to IND only.
One caution: this is a thin sample. 308 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 5635
For a booking, the cancellation rate is the figure to plan around on YX 5635: 6.17% of its 308 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 IND, every carrier and departure
- IND to LGA, the return direction
- LaGuardia (LGA) delay statistics
- Indianapolis International (IND) 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.