Flight number record

YX 5641

Republic Airways · Cleveland to Boston

Route: CLE → BOS
Departs: 17:45
Flights: 294
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5641, 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 5641 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 294 flights, with a median arrival 7 minutes early.

The national on-time rate over the same period is 77.6%, so YX 5641 runs 8 points behind the country as a whole. Across a thousand flights that is about 80 extra late arrivals.

On time

69.6%

Arrivals under 15 minutes late, of 283 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

3.74%

National rate is 1.81%

1 hour+ late

15.5%

National rate is 8.1%

These figures cover 294 flights between July 2025 and June 2026. Beyond the headline rate, 15.5% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When YX 5641 flies

YX 5641 flies CLE to BOS without a single fixed slot. Its most common scheduled departure was 17:45, used on 70 of 294 flights, with 15:00 (49 flights) and 17:59 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:4570 flights23.8%
Departs 15:0049 flights16.7%
Departs 17:5934 flights11.6%

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 17:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 5641 runs level with that at 69.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

YX 5641 next to CLE to BOS

Every carrier on CLE to BOS combined arrived on time 78.8% of the time across 1,682 flights, so YX 5641 is 9 points behind it. Republic flew 868 flights on the same city pair under all its flight numbers, including this one, and those ran 83.7% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 9 points.

YX 5641 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5641thin sample	294	69.6%	72 min	3.74%	C−
All Republic Airways on CLE–BOS	868	83.7%	70 min	2.19%	B
All carriers on CLE–BOS	1,682	78.8%	72 min	2.26%	B
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5641 quarter by quarter

YX 5641 did not run the same all year. Its best quarter was Jan–Mar 2026 at 86.2% on time and its weakest Jul–Sep 2025 at 58.9%, a swing of 27 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 202577 flights58.9%
Oct–Dec 202567 flights60.6%
Jan–Mar 202670 flights86.2%
Apr–Jun 202680 flights73.4%

Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5641 ranged from 64.6% on Wednesday to 75.0% on Monday. With about 42 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 5641 runs late

One category carries most of the weight here. National Airspace System accounts for 62% of the 6,218 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
62%
Carrier
25%
Late-arriving aircraft
10%
Extreme weather
2%

62% 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 3,845 minutes out of 6,218, against a national NAS share of 21%. The split is drawn from 6,218 delay minutes reported on YX 5641.

Cancellations run at 3.74%, against 1.81% nationally. That is about one flight in 25 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.5% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 563 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.

YX 5641 is not only a CLE to BOS flight. It also flew BOS to CLE (263 flights, 85.9% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 294 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.

Other routes flown as YX 5641
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
BOS to CLEthin sample	263	85.9%	66 min	0.38%	A+

What to do with this

Booking YX 5641

For a booking, the cancellation rate is the figure to plan around on YX 5641: 3.74% of its 294 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.

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