Flight profile · Republic Airways
YX3646
Washington (IAD) to Columbus (CMH) · scheduled 10:15 PM – 11:44 PM
How YX3646 performs
900 operations, July 2023 – August 2026.
Between its first and last recorded date on IAD → CMH, YX3646 averaged about 5 operations a week (900 in 1,158 days, cancelled ones included).
YX3646 arrived on time 82.6% of the time, against 83.6% for all IAD → CMH flights, so this departure is 1.0 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 900 operations, July 2023 – August 2026 · If YX3646 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where YX3646 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 |
|---|---|---|---|---|---|
| YX3646 | 82.6% | 1.78% | -9 min | 7.0% | 900 |
| Republic Airways on IAD → CMH | 83.3% | 1.37% | -9 min | 6.7% | 2,417 |
| All IAD → CMH flights | 83.6% | 1.19% | -9 min | 6.4% | 2,939 |
YX3646 cancelled 16 of 900 operations (1.78%), above the 1.19% for IAD → CMH.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
Why YX3646 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
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for YX3646 on IAD → CMH. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies YX3646 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, YX3646 pushed back an average of 56 minutes late; when it came in on time or early, an average of 2 minutes late.
Matched by tail number to the aircraft’s previous flight into IAD: 763 of 885 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| YX3646 | 17% | 59% | 6% |
| Network, same turn | 18% | 85% | 10% |
58 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.
The network row is every flight with a scheduled turn of 45 to 59 minutes. How often YX3646’s aircraft landed 15 or more minutes late is about the same as the network’s and, once the aircraft was late, how often YX3646 left 15 or more minutes late is lower than the network’s.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
From pushback to gate
When it leaves IAD late, does that still matter by the time it reaches CMH?
YX3646 pushes back an average of 11.9 minutes late and reaches the gate at CMH an average of 5.8 minutes late. The 6.1 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. It spends 18.6 minutes on the taxiways at IAD, 2.3 minutes shorter than a typical IAD departure in the same hour.
On arrival at CMH, YX3646 spends 10.3 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 3.1 minutes longer than a typical CMH arrival (7.3 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 18,368 IAD departures. Taxi-in is landing to gate, set against 137,879 arrivals at CMH. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026
The hour it leaves IAD
YX3646 has one departure time, 10:15 PM, so this is what that hour at IAD is worth.
On-time arrival rate. 18,368 departures from IAD are scheduled in the 10 PM–11 PM hour over the period, against 175,140 across the whole day.
YX3646 is scheduled out of IAD at 10:15 PM, in the 10 PM–11 PM bank. Departures from IAD in that hour arrive on time 78.5% of the time against 80.8% across the airport’s whole day, so the hour YX3646 leaves in is an ordinary one for IAD and explains nothing about its record either way.
Both airport figures cover every destination from IAD, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Hours below 120 departures are not scored.
By day of week
Does YX3646 run worse on particular days?
Saturday is historically the most reliable day and Sunday the least, a gap of 9.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Days with fewer than 120 operations are not scored.
Other routes YX3646 has flown
Carriers reassign flight numbers. YX3646 also served these 12 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→CHS Chicago to Charleston | May 21, 2026 – August 10, 2026 | 82 | — |
| ORD→SAV Chicago to Savannah | September 24, 2025 | 1 | — |
| ORD→MSP Chicago to Minneapolis | March 9–30, 2024 | 7 | — |
| ORD→MSN Chicago to Madison | February 16, 2024 – March 4, 2024 | 11 | — |
| ORD→CLE Chicago to Cleveland | February 17, 2024 – March 2, 2024 | 3 | — |
| GSO→ORD Greensboro to Chicago | January 10, 2024 – February 1, 2024 | 23 | — |
| ORD→BHM Chicago to Birmingham | January 9, 2024 | 1 | — |
| LGA→ORD New York to Chicago | December 21, 2023 – January 8, 2024 | 19 | — |
| MCI→EWR Kansas City to Newark | September 29, 2023 | 1 | — |
| MDT→ORD Harrisburg to Chicago | September 28, 2023 | 1 | — |
| RDU→EWR Raleigh–Durham to Newark | September 5–27, 2023 | 18 | — |
| EWR→MKE Newark to Milwaukee | September 16–23, 2023 | 2 | — |
The figures above describe only IAD → CMH, the route YX3646 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
40 min late
against a median of 9 min early
Percentiles over 900 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026
Data and methodology
Calculated by FlyerIntel from 900 records of YX3646 operating IAD → CMH, 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 reported separately, not in the on-time rate.
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
Analysis last recomputed