Flight number record

YX 3709

Republic Airways · Indianapolis to Washington

Route: IND → IAD
Departs: 10:05
Flights: 295
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3709, 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 3709 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 45 minutes. That rests on 295 flights, with a median arrival 13 minutes early.

Set against the rest of the country, YX 3709's record is 14 points better than the US average of 77.6%. That gap is worth roughly 142 fewer late arrivals for every thousand flights.

On time

91.8%

Arrivals under 15 minutes late, of 292 completed flights

Avg delay

43 min

Across delayed arrivals only, not all flights

Cancelled

1.02%

National rate is 1.81%

1 hour+ late

1.7%

National rate is 8.1%

These figures cover 295 flights between July 2025 and June 2026. The median arrival is 13 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 3709 flies

YX 3709 flies IND to IAD without a single fixed slot. Its most common scheduled departure was 10:05, used on 129 of 295 flights, with 09:55 (50 flights) and 10:11 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:05129 flights43.7%
Departs 09:5550 flights16.9%
Departs 10:1141 flights13.9%

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 10:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 3709 runs 8 points better at 91.8%. 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 3709 next to IND to IAD

Every carrier on IND to IAD combined arrived on time 85.5% of the time across 997 flights, so YX 3709 is 6 points ahead of it. Republic flew 948 flights on the same city pair under all its flight numbers, including this one, and those ran 85.3% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 13 points.

YX 3709 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3709thin sample	295	91.8%	43 min	1.02%	A
All Republic Airways on IND–IAD	948	85.3%	64 min	1.69%	A
All carriers on IND–IAD	997	85.5%	62 min	1.60%	A
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3709 quarter by quarter

YX 3709 did not run the same all year. Its best quarter was Apr–Jun 2026 at 100.0% on time and its weakest Jan–Mar 2026 at 85.9%, a swing of 14 points on roughly 74 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 202591 flights93.4%
Oct–Dec 202583 flights91.5%
Jan–Mar 202680 flights85.9%
Apr–Jun 202641 flights100.0%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3709 ranged from 86.0% on Sunday to 97.6% on Monday. With about 42 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 3709 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 1,024 reported delay minutes.

Carrier
40%
National Airspace System
36%
Late-arriving aircraft
25%

The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 405 of the 1,024 delay minutes reported here. The split is drawn from 1,024 delay minutes reported on YX 3709.

Cancellations sit at 1.02% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.7% 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 six other city pairs in the data, including PWM to IAD (18), IAD to PIT (18) and GRR to ORD (15), but none flew often enough under YX 3709 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IND to IAD only.

One caution: this is a thin sample. 295 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 3709

For a booking, YX 3709 has one of the better records a US domestic flight can show: 91.8% on time and 1.02% 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