Flight number record
YX 3519
Republic Airways · Newark to Indianapolis
- Route
- EWR → IND
- Departs
- 18:29
- Flights
- 311
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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−, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 311 flights, with a median arrival 14 minutes early.
Key figures
On time
79.9%
Arrivals under 15 minutes late, of 294 completed flights
Avg delay
119 min
Across delayed arrivals only, not all flights
Cancelled
5.47%
National rate is 1.89%
1 hour+ late
11.2%
National rate is 8.3%
These figures cover 311 flights between September 2025 and August 2026. Beyond the headline rate, 11.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 126 of 311 flights, with 18:00 (38 flights) and 18:10 (32 flights) next.
- Departs 18:29126 flights40.5%
- Departs 18:0038 flights12.2%
- Departs 18:1032 flights10.3%
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 18:29 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and YX 3519 runs 12 points better at 79.9%. 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 3519 next to EWR to IND
Every carrier on EWR to IND combined arrived on time 81.7% of the time across 2,204 flights, so YX 3519 is 2 points behind it. Republic flew 1,948 flights on the same city pair under all its flight numbers, including this one, and those ran 83.4% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 3519thin sample | 311 | 79.9% | 119 min | 5.47% | B− |
| All Republic Airways on EWR–IND | 1,948 | 83.4% | 83 min | 4.26% | B− |
| All carriers on EWR–IND | 2,204 | 81.7% | 80 min | 4.36% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | 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 202527 flights—
- Oct–Dec 202545 flights72.1%
- Jan–Mar 202690 flights84.7%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202658 flights75.5%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, YX 3519 did best on Tuesday at 87.8% on time and worst on Wednesday at 75.6%. Each day rests on about 44 flights, so a gap of 12 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 3519 runs when it is late
YX 3519 often beats the schedule: 144 of 294 completed flights, 49%, arrived 15 minutes or more early. When YX 3519 is late it tends to be very late: 33 of its 59 late arrivals were an hour or more behind, and 18 were two hours or more.
- 15+ min early144 flights49.0%
- Within 15 min91 flights31.0%
- 15–29 min late16 flights5.4%
- 30–59 min late10 flights3.4%
- 1–2 hours late15 flights5.1%
- 2+ hours late18 flights6.1%
Scale runs 0% to 100%.
Share of 294 completed flights by arrival against schedule.
8 of 54 late departures made up the time and arrived on time, 15% of them. 13 flights left on time and still arrived late.
The worst days
Worst days for YX 3519
The latest arrival of the period was on 11 March 2026, 14 hours 17 minutes behind schedule; most of its delay minutes were filed as extreme weather. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 March 2026 | 14 hours 17 minutes | Extreme weather |
| 20 May 2026 | 12 hours 26 minutes | Extreme weather |
| 11 June 2026 | 5 hours 57 minutes | Extreme weather |
| 25 September 2025 | 5 hours 30 minutes | Late-arriving aircraft |
| 6 June 2026 | 4 hours 57 minutes | Late-arriving aircraft |
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 7,026 reported delay minutes.
- 36%Late-arriving aircraft
- 32%Extreme weather
- 22%Carrier
- 10%National Airspace System
Extreme weather accounts for 32% 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 5.3 times the usual weather exposure. The split is drawn from 7,026 delay minutes reported on YX 3519.
Cancellations run at 5.47%, against 1.89% nationally. That is roughly 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
11.2% 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 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.
The same number turns up on three other city pairs in the data, including BNA to EWR (27), BNA to ORD (16) and EWR to BOS (3), 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. 311 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: 5.47% of its 311 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.
Related
Where to go next
- EWR to IND, every carrier and departure
- IND to EWR, the return direction
- Republic Airways 3446 on the same route85.4%
- Republic Airways 3669 on the same route87.0%
- Newark Liberty International (EWR) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.