Flight profile · Republic Airways
YX3709
Indianapolis (IND) to Washington (IAD) · scheduled 10:11 AM – 11:55 AM
How YX3709 performs
1,051 operations, July 2023 – July 2026.
YX3709 arrived on time 94.1% of the time, against 88.8% for all IND → IAD flights, so this departure is 5.3 percentage points better than the route as a whole. Against Republic Airways’ own flights on this route it is 5.4 points better.
Source: US DOT Bureau of Transportation Statistics · 1,051 operations, July 2023 – July 2026 · If YX3709 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How YX3709 compares to other flight numbers, not just to itself.
This flight stays close to typical even on its worst days, a smaller gap than 98% of 11,788 comparable flight numbers.
A typical arrival is 12 min early, and the worst tenth are only 16 minutes worse than that.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where YX3709 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| YX3709 | 94.1% | 0.67% | -12 min | 1.8% | 1,051 |
| Republic Airways on IND → IAD | 88.7% | 1.32% | -9 min | 3.9% | 3,564 |
| All IND → IAD flights | 88.8% | 1.29% | -9 min | 3.8% | 3,644 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Why YX3709 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for YX3709 on IND → IAD. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies YX3709 comes in late, and what that does to the departure.
The aircraft flying YX3709 came in 15 or more minutes late on 9% of the departures where its previous flight is known. There are not enough departures in both groups to say how the flight left after a late one and after an on-time one.
Each departure is matched to the flight the same aircraft flew into IND just before it, using the tail number in the DOT file, 794 of 1,044 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late |
|---|---|
| YX3709 | 9% |
| Network, same turn | 18% |
The schedule leaves little slack between the inbound landing and this departure, so a late arrival has almost nowhere to go but into the departure.
The network row is every flight with a scheduled turn of 30 to 44 minutes. How often YX3709’s aircraft landed 15 or more minutes late is lower than the network’s. There are not enough departures in both groups to compare how it left.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
From pushback to gate
When it leaves IND late, does that still matter by the time it reaches IAD?
YX3709 pushes back an average of 1.5 minutes early and reaches the gate at IAD an average of 7.9 minutes early. The 6.4 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 14.2 minutes on the taxiways at IND is about what any departure from the airport in that hour spends.
On arrival at IAD, YX3709 spends 9.4 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.9 minutes longer than a typical IAD arrival (7.5 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached IAD. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 7,168 departures from IND scheduled in the clock hour YX3709 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at IAD (169,930 flights), not just YX3709’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
The hour it leaves IND
Part of any flight’s record belongs to the clock rather than to the flight. YX3709 has one departure time, so this is what that time is worth.
On-time arrival rate. 7,168 departures from IND are scheduled in the 10 AM–11 AM hour over the period, against 147,128 across the whole day.
YX3709 is scheduled out of IND at 10:11 AM, in the 10 AM–11 AM bank. Departures from IND in that hour arrive on time 89.3% of the time against 81.9% across the airport’s whole day — the slot alone is worth 7.4 points better before anything about this particular flight is considered.
The two airport figures cover every departure from IND to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does YX3709 run worse on particular days?
Monday is historically the most reliable day and Friday the least, a gap of 3.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes YX3709 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| IAD→PIT Washington to Pittsburgh | April 30, 2026 – May 20, 2026 | 18 | — |
| PWM→IAD Portland to Washington | April 30, 2026 – May 20, 2026 | 18 | — |
| CHS→IAD Charleston to Washington | April 1–29, 2026 | 5 | — |
| GRR→ORD Grand Rapids to Chicago | March 29, 2026 – April 28, 2026 | 15 | — |
| RDU→ORD Raleigh–Durham to Chicago | April 12, 2026 | 1 | — |
| ORD→GRR Chicago to Grand Rapids | October 22, 2025 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route YX3709 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
4 min late
against a median of 12 min early
Percentiles over 1,051 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| YX3709 this flight | Republic Airways | 94.1% | 12 min early | 1,051 |
| YX3445 | Republic Airways | 82.9% | 9 min early | 690 |
| YX3530 | Republic Airways | 82.7% | 3 min early | 1,064 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. YX3709 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 1,051 records of YX3709 operating IND → IAD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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