Flight number record

YX 5641

Republic Airways · Cleveland to Boston

Route: CLE → BOS
Departs: 15:00
Flights: 304
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 77.3%. The late ones land a little over an hour behind schedule. That rests on 304 flights, with a median arrival 6 minutes early.

The national on-time rate over the same period is 77.3%, 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

69.3%

Arrivals under 15 minutes late, of 290 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

4.61%

National rate is 1.89%

1 hour+ late

15.9%

National rate is 8.3%

These figures cover 304 flights between September 2025 and August 2026. Beyond the headline rate, 15.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When YX 5641 flies

YX 5641 flies CLE to BOS without a single fixed slot. Its most common scheduled departure was 15:00, used on 49 of 304 flights, with 17:45 (48 flights) and 17:59 (34 flights) next.

Departs 15:0049 flights16.1%
Departs 17:4548 flights15.8%
Departs 17:5934 flights11.2%

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 15:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 5641 runs 3 points worse at 69.3%. 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 5641 next to CLE to BOS

Every carrier on CLE to BOS combined arrived on time 77.7% of the time across 1,620 flights, so YX 5641 is 8 points behind it. Republic flew 881 flights on the same city pair under all its flight numbers, including this one, and those ran 82.7% on time. Across its whole network Republic Airways managed 78.1%, 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	304	69.3%	75 min	4.61%	C−
All Republic Airways on CLE–BOS	881	82.7%	75 min	2.72%	B
All carriers on CLE–BOS	1,620	77.7%	75 min	3.09%	B−
Republic Airways, whole network	364,452	78.1%	74 min	4.55%	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 Oct–Dec 2025 at 60.6%, a swing of 26 points on roughly 76 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 202525 flights—
Oct–Dec 202567 flights60.6%
Jan–Mar 202670 flights86.2%
Apr–Jun 202680 flights73.4%
Jul–Sep 202662 flights68.4%

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

By weekday, YX 5641 ranged from 63.3% on Wednesday to 75.0% on Friday. With about 43 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late YX 5641 runs when it is late

YX 5641 often beats the schedule: 100 of 290 completed flights, 34%, arrived 15 minutes or more early. When YX 5641 is late it tends to be very late: 46 of its 89 late arrivals were an hour or more behind, and 16 were two hours or more.

15+ min early100 flights34.5%
Within 15 min101 flights34.8%
15–29 min late16 flights5.5%
30–59 min late27 flights9.3%
1–2 hours late30 flights10.3%
2+ hours late16 flights5.5%

Scale runs 0% to 100%.

Share of 290 completed flights by arrival against schedule.

11 of 84 late departures made up the time and arrived on time, 13% of them. In the other direction, 16 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 BOS.

The worst days

Worst days for YX 5641

The latest arrival of the period was on 23 July 2026, 5 hours 30 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.

The latest arrivals of YX 5641 in the period
Date	Arrived late by	Largest filed cause
23 July 2026	5 hours 30 minutes	Carrier
18 May 2026	4 hours 30 minutes	Carrier
14 December 2025	3 hours 44 minutes	Carrier
14 October 2025	3 hours 17 minutes	Late-arriving aircraft
30 January 2026	3 hours 15 minutes	Carrier

Delay causes

Why YX 5641 runs late

National Airspace System accounts for 55% of the 6,670 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
55%
Carrier
32%
Late-arriving aircraft
9%
Extreme weather
3%

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 3,680 minutes out of 6,670, against a national NAS share of 21%. The split is drawn from 6,670 delay minutes reported on YX 5641.

Cancellations run at 4.61%, against 1.89% nationally. That is roughly one flight in twenty 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

15.9% 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 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.

YX 5641 is not only a CLE to BOS flight. It also flew BOS to CLE (263 flights, 82.2% 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. 304 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	82.2%	59 min	1.52%	B

What to do with this

Booking YX 5641

For a booking, the cancellation rate is the figure to plan around on YX 5641: 4.61% of its 304 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures