Flight number record
YX 4626
Republic Airways · Indianapolis to Washington
- Route
- IND → DCA
- Departs
- 06:00
- Flights
- 356
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4626, 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 4626 lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 40 minutes on average. That rests on 356 flights, with a median arrival 5 minutes early.
Set against the rest of the country, YX 4626's record is 5 points better than the US average of 77.3%. That gap is worth roughly 50 fewer late arrivals for every thousand flights.
Key figures
On time
82.3%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
41 min
Across delayed arrivals only, not all flights
Cancelled
1.12%
National rate is 1.89%
1 hour+ late
3.1%
National rate is 8.3%
These figures cover 356 flights between September 2025 and August 2026. The median arrival is 5 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.
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Schedule
When YX 4626 flies
YX 4626 flies IND to DCA without a single fixed slot. Its most common scheduled departure was 06:00, used on 104 of 356 flights, with 08:31 (46 flights) and 07:28 (42 flights) next.
- Departs 06:00104 flights29.2%
- Departs 08:3146 flights12.9%
- Departs 07:2842 flights11.8%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 4626 runs 7 points worse at 82.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
YX 4626 next to IND to DCA
Every carrier on IND to DCA combined arrived on time 74.1% of the time across 2,021 flights, so YX 4626 is 8 points ahead of it. Republic flew 1,853 flights on the same city pair under all its flight numbers, including this one, and those ran 74.3% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 4626thin sample | 356 | 82.3% | 41 min | 1.12% | B |
| All Republic Airways on IND–DCA | 1,853 | 74.3% | 57 min | 3.72% | C− |
| All carriers on IND–DCA | 2,021 | 74.1% | 64 min | 4.35% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 4626 quarter by quarter
YX 4626 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Apr–Jun 2026 at 69.2%, a swing of 28 points on roughly 71 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 202530 flights96.7%
- Oct–Dec 202587 flights87.2%
- Jan–Mar 202690 flights77.9%
- Apr–Jun 202691 flights69.2%
- Jul–Sep 202658 flights94.8%
Scale runs 60% to 100%.
By weekday, YX 4626 did best on Saturday at 97.7% on time and worst on Thursday at 76.9%. Each day rests on about 51 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 4626 runs when it is late
YX 4626 often beats the schedule: 102 of 351 completed flights, 29%, arrived 15 minutes or more early. Most of the lateness is short. 35 of the 62 late arrivals were under half an hour behind, and 11 reached an hour or more.
- 15+ min early102 flights29.1%
- Within 15 min187 flights53.3%
- 15–29 min late35 flights10.0%
- 30–59 min late16 flights4.6%
- 1–2 hours late8 flights2.3%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 351 completed flights by arrival against schedule.
5 of 21 late departures made up the time and arrived on time, 24% of them. In the other direction, 46 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DCA.
The worst days
Worst days for YX 4626
The latest arrival of the period was on 21 June 2026, 2 hours 58 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 21 June 2026 | 2 hours 58 minutes | Carrier |
| 3 April 2026 | 2 hours 8 minutes | Carrier |
| 14 December 2025 | 2 hours | Carrier |
| 30 March 2026 | 1 hour 59 minutes | Carrier |
| 22 March 2026 | 1 hour 54 minutes | Carrier |
Delay causes
Why YX 4626 runs late
National Airspace System accounts for 55% of the 2,561 delay minutes carriers reported here, and the remaining four split what is left.
- 55%National Airspace System
- 43%Carrier
- 2%Extreme weather
55% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,414 minutes out of 2,561, against a national NAS share of 21%. The split is drawn from 2,561 delay minutes reported on YX 4626.
Cancellations sit at 1.12% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.1% land an hour or more behind schedule, against 8.3% 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 500 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.
Every one of the 356 flights under YX 4626 in the data flew IND to DCA. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 356 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 4626
For a booking, read YX 4626 as 82.3% on time with 1.12% cancelled over 356 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IND to DCA, every carrier and departure
- DCA to IND, the return direction
- Republic Airways 4352 on the same route84.1%
- Republic Airways 4802 on the same route82.4%
- Indianapolis International (IND) delay statistics
- Ronald Reagan Washington National (DCA) 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
- The best time of day to fly, according to 7.05 million flight records
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.