Route reliability record
ORD→OKC
Chicago to Oklahoma City
- Flights
- 2,623
- Period
- September 2025 to August 2026
- Distance
- 693 mi
- Carriers
- 4
This route carries a cancellation problem, not just a delay problem: 3.2% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 2,623 ORD to OKC flights, with a median arrival 3 minutes early.
Best time to fly ORD to OKC: a 5am–8am departure, ideally on a Thursday. Flights in that window arrived on time 78.0% of the time and Thursday flights 73.9%, against 69.5% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 8 points behind the country as a whole. Across a thousand flights that is about 78 extra late arrivals.
Key figures
On time
69.5%
Arrivals under 15 minutes late, of 2,532 completed flights
Avg delay
89 min
Across delayed arrivals only, not all flights
Cancelled
3.24%
National rate is 1.89%
Best carrier
SkyWest
68.3% on time across 2,343 flights
These figures cover 2,623 flights between September 2025 and August 2026. Beyond the headline rate, 14.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on ORD to OKC
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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 211 | 83.3% | 74 min | 0.95% | B+ |
| Envoy Airthin sample | 23 | 72.7% | 82 min | 4.35% | C− |
| SkyWest Airlines | 2,343 | 68.3% | 89 min | 3.46% | C− |
| United Airlinesthin sample | 46 | 66.7% | 126 min | 2.17% | C |
Flight by flight
Flights on ORD to OKC
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against half a point between the best and worst carrier.
- 5am–8am41 flights78.0%
- 8am–11am673 flights74.9%
- 11am–2pm393 flights76.9%
- 2pm–5pm727 flights68.5%
- 5pm–8pm661 flights60.9%
- 8pm–5am128 flights63.7%
Scale runs 50% to 85%.
The 5pm–8pm window is where this operation falls apart: 60.9% on time, against 78.0% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 727 flights scheduled in it.
Explore
Filter ORD to OKC by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On ORD to OKC, the best departure window is 5am–8am at 78.0% on time and the worst is 5pm–8pm at 60.9%, a wide gap of 17.1 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am78.0%
- 8–11am74.9%
- 11am–2pm76.9%
- 2–5pm68.5%
- 5–8pm60.9%
- 8pm–5am63.7%
best all US flightsScale 50% to 95%.
Across the year
When delays peak on this route
This route's year swings by 20 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
December is the weak month at 58.0% on time, against 78.0% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. July was the busiest month here, with 248 flights.
Across the week, Thursday is the strongest day at 73.9% on time and Friday the weakest at 65.6%, a spread of 8 points.
Delay causes
Why this route gets delayed
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 69,000 reported delay minutes.
- 34%Carrier
- 25%Extreme weather
- 24%Late-arriving aircraft
- 16%National Airspace System
- 0%Security
Extreme weather accounts for 25% 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 4.2 times the usual weather exposure. The split is drawn from 68,637 reported delay minutes.
Cancellations run at 3.24%, against 1.89% nationally. That is about one flight in 30 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 stage length
What a delay here actually costs
14.4% 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 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.
The return leg is a different operation and performs like one: it runs 75.2% on time across 2,622 flights, 6 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 6 points of difference.
The sample behind these figures is 2,623 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in OKC after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.24% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 2,532 completed flights over 12 months sit behind that.
Common questions
ORD to OKC questions
How often is ORD to OKC delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 30.5% of the 2,623 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is ORD to OKC compared with the rest of the country?
69.5% of flights arrive on time here against a national 77.3%, a difference of 8 points against it. That is worth a C− on this site's grading scale.
What time of day has the fewest delays on ORD to OKC?
The 5am–8am departure window is the strongest at 78.0% on time. The 5pm–8pm window is the weakest at 60.9%, 17 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are December delays on ORD to OKC?
December is the weakest month at 58.0% on time, compared with 78.0% in September. Across the year that is 20 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- OKC to ORD — the return legseparate record
- Chicago O'Hare International (ORD) delay statistics
- Republic Airways on ORD to OKC83.3%
- SkyWest Airlines on ORD to OKC68.3%
- ORD to LGA, a related route66.6%
- DFW to OKC, a related route73.0%
- ORD to BOS, a related route66.6%
- Republic Airways on-time record83.3%
- Envoy Air on-time record72.7%
- SkyWest Airlines on-time record68.3%
- The US routes with the most cancellations
- What a cancellation rate actually tells you (and what it hides)
Direction matters. ORD to OKC and OKC to ORD are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.