Flight number record

YX 4642

Republic Airways · Columbus to Boston

Route: CMH → BOS
Departs: 08:00
Flights: 354
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 4642, 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 4642 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 354 flights, with a median arrival 12 minutes early.

Set against the rest of the country, YX 4642's record is 16 points better than the US average of 77.6%. That gap is worth roughly 155 fewer late arrivals for every thousand flights.

On time

93.1%

Arrivals under 15 minutes late, of 349 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

1.13%

National rate is 1.81%

1 hour+ late

2.9%

National rate is 8.1%

These figures cover 354 flights between July 2025 and June 2026. The median arrival is 12 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 4642 flies

YX 4642 flies CMH to BOS without a single fixed slot. Its most common scheduled departure was 08:00, used on 95 of 354 flights, with 07:15 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:0095 flights26.8%
Departs 07:1538 flights10.7%

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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 4642 runs 9 points better at 93.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

YX 4642 next to CMH to BOS

Every carrier on CMH to BOS combined arrived on time 82.6% of the time across 2,002 flights, so YX 4642 is 11 points ahead of it. Republic flew 1,913 flights on the same city pair under all its flight numbers, including this one, and those ran 83.5% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 15 points.

YX 4642 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 4642thin sample	354	93.1%	65 min	1.13%	A
All Republic Airways on CMH–BOS	1,913	83.5%	61 min	2.04%	B
All carriers on CMH–BOS	2,002	82.6%	63 min	2.00%	B
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 4642 quarter by quarter

Quarter by quarter YX 4642 held fairly steady: 92.0% in Jul–Sep 2025, 92.2% in Oct–Dec 2025, 92.6% in Jan–Mar 2026 and 95.6% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202588 flights92.0%
Oct–Dec 202591 flights92.2%
Jan–Mar 202685 flights92.6%
Apr–Jun 202690 flights95.6%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 4642 ranged from 88.0% on Monday to 96.2% on Friday. With about 51 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 4642 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 1,568 reported delay minutes.

Carrier
40%
National Airspace System
23%
Late-arriving aircraft
20%
Extreme weather
17%

Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 1,568 delay minutes reported on YX 4642.

Cancellations sit at 1.13% against a national 1.81%, which is ordinary. Diversions add another 0.28%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.9% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The 640 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.

Every one of the 354 flights under YX 4642 in the data flew CMH to BOS. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 354 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 4642

For a booking, YX 4642 has one of the better records a US domestic flight can show: 93.1% on time and 1.13% cancelled. That is a base rate, not a promise about any single 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