Flight number record
YX 5616
Republic Airways · Boston to Indianapolis
- Route
- BOS → IND
- Departs
- 17:45
- Flights
- 323
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5616, 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 5616 sits in the middle of the pack with a B−. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 323 flights, with a median arrival 14 minutes early.
Key figures
On time
75.6%
Arrivals under 15 minutes late, of 312 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
3.41%
National rate is 1.89%
1 hour+ late
9.6%
National rate is 8.3%
These figures cover 323 flights between September 2025 and August 2026. Beyond the headline rate, 9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 5616 flies
YX 5616 flies BOS to IND without a single fixed slot. Its most common scheduled departure was 17:45, used on 73 of 323 flights, with 18:10 (50 flights) and 18:05 (34 flights) next.
- Departs 17:4573 flights22.6%
- Departs 18:1050 flights15.5%
- Departs 18:0534 flights10.5%
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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and YX 5616 runs 8 points better at 75.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
YX 5616 next to BOS to IND
Every carrier on BOS to IND combined arrived on time 80.3% of the time across 2,025 flights, so YX 5616 is 5 points behind it. Republic flew 1,975 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5616thin sample | 323 | 75.6% | 83 min | 3.41% | B− |
| All Republic Airways on BOS–IND | 1,975 | 80.5% | 69 min | 2.43% | B |
| All carriers on BOS–IND | 2,025 | 80.3% | 69 min | 2.42% | B |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5616 quarter by quarter
YX 5616 did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.7% on time and its weakest Jul–Sep 2026 at 65.0%, a swing of 16 points on roughly 81 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 flights—
- Oct–Dec 202569 flights77.6%
- Jan–Mar 202674 flights79.4%
- Apr–Jun 202688 flights80.7%
- Jul–Sep 202662 flights65.0%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5616 did best on Thursday at 84.8% on time and worst on Sunday at 63.6%. Each day rests on about 46 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5616 runs when it is late
YX 5616 often beats the schedule: 151 of 312 completed flights, 48%, arrived 15 minutes or more early. The 76 late arrivals split 19 under half an hour, 27 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early151 flights48.4%
- Within 15 min85 flights27.2%
- 15–29 min late19 flights6.1%
- 30–59 min late27 flights8.7%
- 1–2 hours late15 flights4.8%
- 2+ hours late15 flights4.8%
Scale runs 0% to 100%.
Share of 312 completed flights by arrival against schedule.
18 of 85 late departures made up the time and arrived on time, 21% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for YX 5616
The latest arrival of the period was on 26 January 2026, 14 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 January 2026 | 14 hours 39 minutes | Carrier |
| 6 August 2026 | 6 hours 14 minutes | Late-arriving aircraft |
| 9 July 2026 | 5 hours 22 minutes | Late-arriving aircraft |
| 8 August 2026 | 3 hours 55 minutes | Late-arriving aircraft |
| 11 March 2026 | 3 hours 44 minutes | Extreme weather |
Delay causes
Why YX 5616 runs late
Late-arriving aircraft accounts for 46% of the 6,292 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 41%Carrier
- 11%National Airspace System
- 2%Extreme weather
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,292 reported delay minutes here, that single category outweighs weather by 19 to one. The split is drawn from 6,292 delay minutes reported on YX 5616.
Cancellations run at 3.41%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
9.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 818 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.
The same number turns up on two other city pairs in the data, including JFK to IND (15) and PIT to BOS (2), but none flew often enough under YX 5616 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to IND only.
One caution: this is a thin sample. 323 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 5616
For a booking, the cancellation rate is the figure to plan around on YX 5616: 3.41% of its 323 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to IND, every carrier and departure
- IND to BOS, the return direction
- Republic Airways 5627 on the same route82.0%
- Republic Airways 4725 on the same route88.4%
- Republic Airways 4585 on the same route64.2%
- Boston Logan International (BOS) delay statistics
- Indianapolis International (IND) 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
- Why the first flight of the morning is statistically safest
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.