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DelayAtlas

Carrier route record

UAORD→CLE

United Airlines · Chicago to Cleveland

Flights
2,182
Period
September 2025 to August 2026
Share of route
45%
Carriers
5
CGRADE

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with United Airlines.

United on ORD to CLE sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 2,182 flights. The strongest carrier on the route with a full sample, Republic Airways, flew 583 at 76.2% on time.

Republic Airways is the most reliable of the four carriers covered here at 76.2% on time across 583 flights.

Key figures

On time

71.8%

Arrivals under 15 minutes late, of 2,154 completed flights

Avg delay

78 min

Across delayed arrivals only, not all flights

Cancelled

1.28%

National rate is 1.89%

Whole route

70.8%

Every carrier on ORD to CLE, 4,893 flights

These figures cover 2,182 flights between September 2025 and August 2026. Beyond the headline rate, 11.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

United against every carrier on ORD to CLE

United flew 2,182 of the 4,893 flights on ORD to CLE, about 45% of it. Its 71.8% on time is about level with the route as a whole at 70.8%. Ranked by on-time rate it is number three of five carriers on the route, where the range runs from Republic at 76.2% to American at 59.2%.

The choice of carrier is not cosmetic here. Republic Airways arrives on time 76.2% of the time; American Airlines manages 59.2%. Sample sizes sit next to every figure, because a two-point gap across 396 flights means less than a ten-point one.

On-time performance by carrier on ORD to CLE
AirlineFlightsOn timeAvg delayCancelledGrade
Republic Airways58376.2%69 min5.32%B−
Envoy Air87973.1%62 min4.10%C−
United Airlines (this page)2,18271.8%78 min1.28%C
SkyWest Airlines85367.3%87 min3.40%C−
American Airlines39659.2%98 min3.54%D−

Republic Airways cancels 5.3% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Flight by flight

United flight numbers on ORD to CLE

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Departure window

When United runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 32 points, against 17 points between the best and worst carrier.

  • 5am–8am321 flights89.6%
  • 8am–11am239 flights82.0%
  • 11am–2pm265 flights77.6%
  • 2pm–5pm430 flights74.6%
  • 5pm–8pm544 flights57.1%
  • 8pm–5am383 flights64.2%

Scale runs 50% to 95%.

The 5pm–8pm window is where this operation falls apart: 57.1% on time, against 89.6% 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 5pm–8pm window is the busiest, with 544 flights scheduled in it.

Across the year

United on ORD to CLE through the year

On-time rate by calendar month67J76F65M76A77M73J69J62A80S80O63N68D
Darker means more delays. Figures are on-time percentages.October best, August worst

August is the worst month at 61.8% on time, 18 points below October, the best at 80.2%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. September was the busiest month here, with 230 flights.

Across the week, Tuesday is the strongest day at 76.1% on time and Sunday the weakest at 66.5%, a spread of 10 points.

On-time rate by day of the week69.0Mon76.1Tue76.0Wed71.7Thu71.7Fri72.0Sat66.5Sun
Monday: 69.0 percent on time. Tuesday: 76.1 percent on time. Wednesday: 76.0 percent on time. Thursday: 71.7 percent on time. Friday: 71.7 percent on time. Saturday: 72.0 percent on time. Sunday: 66.5 percent on time

Arrival by arrival

How late United on ORD to CLE runs when it is late

The 607 late arrivals split 199 under half an hour, 154 between 30 and 60 minutes, and 254 an hour or more.

  • 15+ min early445 flights20.7%
  • Within 15 min1,102 flights51.2%
  • 15–29 min late199 flights9.2%
  • 30–59 min late154 flights7.1%
  • 1–2 hours late130 flights6.0%
  • 2+ hours late124 flights5.8%

Scale runs 0% to 100%.

Share of 2,154 completed flights by arrival against schedule.

76 of 540 late departures made up the time and arrived on time, 14% of them. In the other direction, 143 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 CLE.

The worst days

Worst days for United on ORD to CLE

The latest arrival of the period was on 8 June 2026, 10 hours 17 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.

The latest arrivals of United on ORD to CLE in the period
DateArrived late byLargest filed cause
8 June 202610 hours 17 minutesCarrier
27 July 20268 hours 33 minutesExtreme weather
13 August 20268 hours 16 minutesCarrier
18 July 20267 hours 58 minutesLate-arriving aircraft
14 August 20266 hours 53 minutesCarrier

Delay causes

Why United runs late on this route

Late-arriving aircraft accounts for 47% of the 47,000 delay minutes carriers reported here, and the remaining four split what is left.

  • Late-arriving aircraft
    47%
  • Carrier
    31%
  • National Airspace System
    15%
  • Extreme weather
    7%

47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 47,000 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 47,130 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.6% on time here.

Cancellations sit at 1.28% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

11.8% 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.

At 316 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.

The return leg is a different operation and performs like one: it runs 75.6% on time across 2,181 flights, 4 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 4 points of difference.

The sample behind these figures is 2,182 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.

What to do with this

Booking United on ORD to CLE

Put together: the calendar is the biggest lever here, not the carrier or the hour. October runs 80.2% on time and August 61.8%, a swing of 18 points. If the dates move at all, move them out of August before you think about anything else. 2,154 completed flights over 12 months sit behind that.

Related

Where to go next

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.