Flight number record
UA 1641
United Airlines · Chicago to Cleveland
- Route
- ORD → CLE
- Departs
- 19:35
- Flights
- 289
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1641, check with United Airlines.
UA 1641 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 289 flights, with a median arrival 3 minutes late.
The national on-time rate over the same period is 77.3%, so UA 1641 runs 14 points behind the country as a whole. Across a thousand flights that is about 144 extra late arrivals.
Key figures
On time
62.9%
Arrivals under 15 minutes late, of 286 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
1.04%
National rate is 1.89%
1 hour+ late
14.7%
National rate is 8.3%
These figures cover 289 flights between September 2025 and August 2026. Beyond the headline rate, 14.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 1641 flies
UA 1641 flies ORD to CLE without a single fixed slot. Its most common scheduled departure was 19:35, used on 85 of 289 flights, with 19:45 (45 flights) and 19:48 (39 flights) next.
- Departs 19:3585 flights29.4%
- Departs 19:4545 flights15.6%
- Departs 19:4839 flights13.5%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:35 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 1641 runs 5 points worse at 62.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 1641 next to ORD to CLE
Every carrier on ORD to CLE combined arrived on time 70.8% of the time across 4,893 flights, so UA 1641 is 8 points behind it. United flew 2,182 flights on the same city pair under all its flight numbers, including this one, and those ran 71.8% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1641thin sample | 289 | 62.9% | 75 min | 1.04% | D |
| All United Airlines on ORD–CLE | 2,182 | 71.8% | 78 min | 1.28% | C |
| All carriers on ORD–CLE | 4,893 | 70.8% | 78 min | 2.82% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1641 quarter by quarter
UA 1641 did not run the same all year. Its best quarter was Apr–Jun 2026 at 74.1% on time and its weakest Jul–Sep 2026 at 51.5%, a swing of 23 points on roughly 72 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.
- Jul–Sep 202526 flights—
- Oct–Dec 202586 flights54.1%
- Jan–Mar 202684 flights69.0%
- Apr–Jun 202658 flights74.1%
- Jul–Sep 202635 flights51.5%
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1641 did best on Wednesday at 77.8% on time and worst on Monday at 54.5%. Each day rests on about 41 flights, so a gap of 23 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1641 runs when it is late
The 106 late arrivals split 33 under half an hour, 31 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early52 flights18.2%
- Within 15 min128 flights44.8%
- 15–29 min late33 flights11.5%
- 30–59 min late31 flights10.8%
- 1–2 hours late23 flights8.0%
- 2+ hours late19 flights6.6%
Scale runs 0% to 100%.
Share of 286 completed flights by arrival against schedule.
19 of 113 late departures made up the time and arrived on time, 17% of them. 12 flights left on time and still arrived late.
The worst days
Worst days for UA 1641
The latest arrival of the period was on 27 April 2026, 5 hours 25 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 April 2026 | 5 hours 25 minutes | Late-arriving aircraft |
| 6 March 2026 | 5 hours 17 minutes | Late-arriving aircraft |
| 17 July 2026 | 5 hours 11 minutes | Late-arriving aircraft |
| 10 March 2026 | 4 hours 31 minutes | Extreme weather |
| 15 March 2026 | 3 hours 58 minutes | Late-arriving aircraft |
Delay causes
Why UA 1641 runs late
Late-arriving aircraft accounts for 51% of the 7,907 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Late-arriving aircraft
- 30%Carrier
- 10%National Airspace System
- 9%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,907 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 7,907 delay minutes reported on UA 1641.
Cancellations sit at 1.04% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
14.7% 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 same number turns up on six other city pairs in the data, including PDX to ORD (103), CHS to ORD (36) and MCI to ORD (30), but none flew often enough under UA 1641 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to CLE only.
One caution: this is a thin sample. 289 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 UA 1641
For a booking, UA 1641 is a flight to put a long connection behind. 14.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- ORD to CLE, every carrier and departure
- CLE to ORD, the return direction
- United Airlines 2652 on the same route55.4%
- United Airlines 2389 on the same route80.9%
- Chicago O'Hare International (ORD) delay statistics
- Cleveland Hopkins International (CLE) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.