Carrier route record

YXORD→OKC

Republic Airways · Chicago to Oklahoma City

Flights: 211
Period: July 2025 to June 2026
Share of route: 8%
Carriers: 4

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

Republic on ORD to OKC lands a B+, 6 points better than the national rate of 77.6%. About one flight in six 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 211 flights, with a median arrival 15 minutes early.

Set against the rest of the country, Republic's ORD to OKC record is 6 points better than the US average of 77.6%. That gap is worth roughly 57 fewer late arrivals for every thousand flights.

On time

83.3%

Arrivals under 15 minutes late, of 209 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

0.95%

National rate is 1.81%

Whole route

69.3%

Every carrier on ORD to OKC, 2,594 flights

These figures cover 211 flights between July 2025 and June 2026. The median arrival is 15 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 ORD to OKC

Republic flew 211 of the 2,594 flights on ORD to OKC, about 8% of it. Its 83.3% on time is 14 points better than the route as a whole, which runs 69.3%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from United at 100.0% to SkyWest at 68.0%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

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 ORD to OKC
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlinesthin sample	4	100.0%	—	0.00%	A+
Republic Airways (this page)thin sample	211	83.3%	74 min	0.95%	B+
Envoy Airthin sample	23	72.7%	82 min	4.35%	C−
SkyWest Airlines	2,356	68.0%	85 min	3.10%	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 211 flights.

5am–8am—
8am–11am146 flights85.5%
11am–2pm3 flights—
2pm–5pm8 flights—
5pm–8pm3 flights—
8pm–5am51 flights76.0%

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

Book the morning departure. Flights leaving between 8am–11am arrive on time 85.5% of the time, against 76.0% for the overnight window. That is 10 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 146 flights scheduled in it.

Across the year

Republic on ORD to OKC through the year

Oct–Dec 202514 flights—
Jan–Mar 2026139 flights80.3%
Apr–Jun 202658 flights91.4%

Scale runs 70% 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 83.3% on time across 211 flights.

Split by quarter, Republic on ORD to OKC logged 14 flights in Oct–Dec 2025, 139 flights in Jan–Mar 2026 and 58 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 83.3% annual figure is the one to use.

Delay causes

Why Republic runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 53% of the 2,585 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.

Late-arriving aircraft
53%
Carrier
24%
National Airspace System
13%
Extreme weather
10%

53% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,585 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,585 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 85.5% on time here.

Cancellations sit at 0.95% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

6.7% 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 693 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 87.9% on time across 211 flights, 5 points above 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 5 points of difference.

One caution: this is a thin sample. 211 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 ORD to OKC

Put together: treat all of this as provisional. 211 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 83.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 209 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