Carrier route record

YXROA→ORD

Republic Airways · Roanoke to Chicago

Flights: 290
Period: July 2025 to June 2026
Share of route: 34%
Carriers: 2

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.

Republic on ROA to ORD lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 290 flights, with a median arrival 6 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Republic on ROA to ORD from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

78.5%

Arrivals under 15 minutes late, of 284 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

2.07%

National rate is 1.81%

Whole route

74.7%

Every carrier on ROA to ORD, 847 flights

These figures cover 290 flights between July 2025 and June 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.

Carrier by carrier

Republic against every carrier on ROA to ORD

Republic flew 290 of the 847 flights on ROA to ORD, about 34% of it. Its 78.5% on time is 4 points better than the route as a whole, which runs 74.7%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Republic at 78.5% to SkyWest at 72.6%.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on ROA to ORD
Airline	Flights	On time	Avg delay	Cancelled	Grade
Republic Airways (this page)thin sample	290	78.5%	72 min	2.07%	B
SkyWest Airlines	557	72.6%	113 min	2.87%	C

Departure window

When Republic runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 290 flights.

5am–8am233 flights77.2%
8am–11am57 flights83.9%
11am–2pm—
2pm–5pm—
5pm–8pm—
8pm–5am—

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

The early departures do better, though not dramatically: 83.9% on time for the 8am–11am window against 77.2% for 5am–8am. Worth taking if the schedule allows, not worth an extra connection. The 5am–8am window is the busiest, with 233 flights scheduled in it.

Across the year

Republic on ROA to ORD through the year

Jul–Sep 202555 flights81.1%
Oct–Dec 202592 flights69.7%
Jan–Mar 202652 flights72.5%
Apr–Jun 202691 flights89.0%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 78.5% on time across 290 flights.

Republic on ROA to ORD did not run the same all year. Its best quarter was Apr–Jun 2026 at 89.0% on time and its weakest Oct–Dec 2025 at 69.7%, a swing of 19 points on roughly 73 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.

Across the week, Monday is the strongest day at 85.0% on time and Tuesday the weakest at 70.0%. 15 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Republic runs late on this route

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 4,400 reported delay minutes.

Carrier
32%
National Airspace System
30%
Extreme weather
23%
Late-arriving aircraft
15%
Security
0%

Extreme weather accounts for 23% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.7 times the usual weather exposure. The split is drawn from 4,400 reported delay minutes.

Cancellations sit at 2.07% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

7.0% 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 a little over an hour, which a normal layover absorbs.

The 530 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 return leg is a different operation and performs like one: it runs 72.1% on time across 291 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.

One caution: this is a thin sample. 290 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 Republic on ROA to ORD

Put together: treat all of this as provisional. 290 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 78.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 284 completed flights over 12 months sit behind that.

Where to go next

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