Flight number record

YX 3519

Republic Airways · Newark to Indianapolis

Route: EWR → IND
Departs: 18:29
Flights: 313
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3519, 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 3519 lands a B−, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 313 flights, with a median arrival 15 minutes early.

On time

79.1%

Arrivals under 15 minutes late, of 296 completed flights

Avg delay

124 min

Across delayed arrivals only, not all flights

Cancelled

5.43%

National rate is 1.81%

1 hour+ late

11.8%

National rate is 8.1%

These figures cover 313 flights between July 2025 and June 2026. Beyond the headline rate, 11.8% 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 3519 flies

YX 3519 flies EWR to IND without a single fixed slot. Its most common scheduled departure was 18:29, used on 99 of 313 flights, with 18:47 (38 flights) and 18:00 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:2999 flights31.6%
Departs 18:4738 flights12.1%
Departs 18:0038 flights12.1%

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 18:29 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 3519 runs 11 points better at 79.1%. 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 3519 next to EWR to IND

Every carrier on EWR to IND combined arrived on time 81.6% of the time across 2,221 flights, so YX 3519 is 3 points behind it. Republic flew 1,904 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network Republic Airways managed 78.5%, close to this flight's figure.

YX 3519 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3519thin sample	313	79.1%	124 min	5.43%	B−
All Republic Airways on EWR–IND	1,904	83.5%	87 min	4.10%	B−
All carriers on EWR–IND	2,221	81.6%	84 min	4.23%	B−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3519 quarter by quarter

YX 3519 did not run the same all year. Its best quarter was Jan–Mar 2026 at 84.7% on time and its weakest Oct–Dec 2025 at 72.1%, a swing of 13 points on roughly 78 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 202587 flights75.3%
Oct–Dec 202545 flights72.1%
Jan–Mar 202690 flights84.7%
Apr–Jun 202691 flights80.2%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3519 did best on Tuesday at 88.4% on time and worst on Sunday at 72.5%. Each day rests on about 45 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 3519 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 7,706 reported delay minutes.

Late-arriving aircraft
39%
Extreme weather
27%
Carrier
23%
National Airspace System
11%

Extreme weather accounts for 27% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.3 times the usual weather exposure. The split is drawn from 7,706 delay minutes reported on YX 3519.

Cancellations run at 5.43%, 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. 11.8% 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 645 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 two other city pairs in the data, including BNA to EWR (27) and BNA to ORD (16), but none flew often enough under YX 3519 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to IND only.

One caution: this is a thin sample. 313 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 3519

For a booking, the cancellation rate is the figure to plan around on YX 3519: 5.43% of its 313 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.

Where to go next

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.

Key figures