Flight number record
YX 5627
Republic Airways · Boston to Indianapolis
- Route
- BOS → IND
- Departs
- 13:59
- Flights
- 302
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5627, 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 5627 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 about an hour on average. That rests on 302 flights, with a median arrival 6 minutes early.
Set against the rest of the country, YX 5627's record is 5 points better than the US average of 77.3%. That gap is worth roughly 47 fewer late arrivals for every thousand flights.
Key figures
On time
82.0%
Arrivals under 15 minutes late, of 295 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
2.32%
National rate is 1.89%
1 hour+ late
6.4%
National rate is 8.3%
These figures cover 302 flights between September 2025 and August 2026. The median arrival is 6 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 5627 flies
YX 5627 flies BOS to IND without a single fixed slot. Its most common scheduled departure was 13:59, used on 100 of 302 flights.
- Departs 13:59100 flights33.1%
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 13:59 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5627 runs 4 points better at 82.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
YX 5627 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 5627 is 2 points ahead of 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 beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5627thin sample | 302 | 82.0% | 64 min | 2.32% | 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 5627 quarter by quarter
Quarter by quarter YX 5627 held fairly steady: 81.0% in Oct–Dec 2025, 77.0% in Jan–Mar 2026, 85.7% in Apr–Jun 2026 and 80.0% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202526 flights—
- Oct–Dec 202585 flights81.0%
- Jan–Mar 202664 flights77.0%
- Apr–Jun 202670 flights85.7%
- Jul–Sep 202657 flights80.0%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5627 did best on Friday at 91.1% on time and worst on Sunday at 77.3%. Each day rests on about 43 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5627 runs when it is late
YX 5627 often beats the schedule: 102 of 295 completed flights, 35%, arrived 15 minutes or more early. The 53 late arrivals split 17 under half an hour, 17 between 30 and 60 minutes, and 19 an hour or more.
- 15+ min early102 flights34.6%
- Within 15 min140 flights47.5%
- 15–29 min late17 flights5.8%
- 30–59 min late17 flights5.8%
- 1–2 hours late12 flights4.1%
- 2+ hours late7 flights2.4%
Scale runs 0% to 100%.
Share of 295 completed flights by arrival against schedule.
9 of 50 late departures made up the time and arrived on time, 18% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for YX 5627
The latest arrival of the period was on 4 January 2026, 5 hours 17 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 January 2026 | 5 hours 17 minutes | Carrier |
| 26 January 2026 | 5 hours 3 minutes | Extreme weather |
| 13 December 2025 | 3 hours 22 minutes | Extreme weather |
| 28 January 2026 | 2 hours 53 minutes | Late-arriving aircraft |
| 8 October 2025 | 2 hours 32 minutes | Carrier |
Delay causes
Why YX 5627 runs late
Carrier accounts for 43% of the 3,377 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Carrier
- 26%Late-arriving aircraft
- 20%National Airspace System
- 11%Extreme weather
The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,463 of the 3,377 delay minutes reported here. The split is drawn from 3,377 delay minutes reported on YX 5627.
Cancellations sit at 2.32% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
6.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
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 four other city pairs in the data, including IND to BOS (146), BNA to DCA (34) and RDU to BOS (6), but none flew often enough under YX 5627 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. 302 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 5627
For a booking, read YX 5627 as 82.0% on time with 2.32% cancelled over 302 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BOS to IND, every carrier and departure
- IND to BOS, the return direction
- Republic Airways 5616 on the same route75.6%
- 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
- The best day of the week to fly, and why it is the second lever
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.