Flight number record

YX 5627

Republic Airways · Boston to Indianapolis

Route: BOS → IND
Departs: 13:59
Flights: 297
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 297 flights, with a median arrival 9 minutes early.

Set against the rest of the country, YX 5627's record is 7 points better than the US average of 77.6%. That gap is worth roughly 66 fewer late arrivals for every thousand flights.

On time

84.2%

Arrivals under 15 minutes late, of 292 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

1.68%

National rate is 1.81%

1 hour+ late

5.8%

National rate is 8.1%

These figures cover 297 flights between July 2025 and June 2026. The median arrival is 9 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.

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 80 of 297 flights, with 13:20 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:5980 flights26.9%
Departs 13:2030 flights10.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 78.8%, and YX 5627 runs 5 points better at 84.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5627 next to BOS to IND

Every carrier on BOS to IND combined arrived on time 81.6% of the time across 2,017 flights, so YX 5627 is 3 points ahead of it. Republic flew 1,962 flights on the same city pair under all its flight numbers, including this one, and those ran 81.9% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 6 points.

YX 5627 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5627thin sample	297	84.2%	66 min	1.68%	B
All Republic Airways on BOS–IND	1,962	81.9%	68 min	2.24%	B
All carriers on BOS–IND	2,017	81.6%	68 min	2.23%	B
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5627 quarter by quarter

YX 5627 did not run the same all year. Its best quarter was Jul–Sep 2025 at 92.2% on time and its weakest Jan–Mar 2026 at 77.0%, a swing of 15 points on roughly 74 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 202578 flights92.2%
Oct–Dec 202585 flights81.0%
Jan–Mar 202664 flights77.0%
Apr–Jun 202670 flights85.7%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5627 ranged from 80.0% on Monday to 89.4% on Tuesday. With about 42 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 5627 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,048 reported delay minutes.

Carrier
37%
Late-arriving aircraft
31%
National Airspace System
21%
Extreme weather
12%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 3,048 delay minutes reported on YX 5627.

Cancellations sit at 1.68% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

5.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on five other city pairs in the data, including IND to BOS (188), BNA to DCA (34) and IND to LGA (8), 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. 297 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 84.2% on time with 1.68% cancelled over 297 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures