Flight number record

YX 3561

Republic Airways · Washington to Indianapolis

Route: IAD → IND
Departs: 08:31
Flights: 316
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3561, 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 3561 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 316 flights, with a median arrival 12 minutes early.

Set against the rest of the country, YX 3561's record is 14 points better than the US average of 77.6%. That gap is worth roughly 144 fewer late arrivals for every thousand flights.

On time

92.0%

Arrivals under 15 minutes late, of 314 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.63%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 316 flights between July 2025 and June 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When YX 3561 flies

YX 3561 flies IAD to IND without a single fixed slot. Its most common scheduled departure was 08:31, used on 56 of 316 flights, with 08:30 (52 flights) and 08:45 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:3156 flights17.7%
Departs 08:3052 flights16.5%
Departs 08:4548 flights15.2%

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 08:31 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 3561 runs 8 points better at 92.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

YX 3561 next to IAD to IND

Every carrier on IAD to IND combined arrived on time 83.8% of the time across 992 flights, so YX 3561 is 8 points ahead of it. Republic flew 943 flights on the same city pair under all its flight numbers, including this one, and those ran 84.3% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 14 points.

YX 3561 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3561thin sample	316	92.0%	53 min	0.63%	A+
All Republic Airways on IAD–IND	943	84.3%	90 min	1.06%	B
All carriers on IAD–IND	992	83.8%	85 min	1.01%	B
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3561 quarter by quarter

Quarter by quarter YX 3561 held fairly steady: 88.9% in Jul–Sep 2025, 89.2% in Oct–Dec 2025, 96.7% in Jan–Mar 2026 and 95.1% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202590 flights88.9%
Oct–Dec 202583 flights89.2%
Jan–Mar 202662 flights96.7%
Apr–Jun 202681 flights95.1%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3561 ranged from 89.1% on Thursday to 95.7% on Monday. With about 45 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 3561 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 1,318 reported delay minutes.

Late-arriving aircraft
41%
Carrier
39%
National Airspace System
10%
Extreme weather
10%

41% 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 1,318 reported delay minutes here, that single category outweighs weather by 4 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 1,318 delay minutes reported on YX 3561.

Cancellations are rare at 0.63%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The same number turns up on five other city pairs in the data, including EWR to JAX (23), EWR to BOS (3) and CHS to IAD (2), but none flew often enough under YX 3561 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAD to IND only.

One caution: this is a thin sample. 316 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 3561

For a booking, YX 3561 has one of the better records a US domestic flight can show: 92.0% on time and 0.63% cancelled. That is a base rate, not a promise about any single day.

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