Flight number record
UA 2211
United Airlines · Chicago to Seattle
- Route
- ORD → SEA
- Departs
- 19:45
- Flights
- 253
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2211, check with United Airlines.
UA 2211 earns a D, which is as low as this site's scale goes for a reason. Only 57.6% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.3%. Late arrivals average about an hour. Treat any tight connection here as a coin flip. That rests on 253 flights, with a median arrival 8 minutes late.
The national on-time rate over the same period is 77.3%, so UA 2211 runs 20 points behind the country as a whole. Across a thousand flights that is about 197 extra late arrivals.
Key figures
On time
57.6%
Arrivals under 15 minutes late, of 250 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
1.19%
National rate is 1.89%
1 hour+ late
12.0%
National rate is 8.3%
These figures cover 253 flights between September 2025 and August 2026. Beyond the headline rate, 12.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2211 flies
UA 2211 flies ORD to SEA without a single fixed slot. Its most common scheduled departure was 19:45, used on 44 of 253 flights, with 19:59 (42 flights) and 19:47 (31 flights) next.
- Departs 19:4544 flights17.4%
- Departs 19:5942 flights16.6%
- Departs 19:4731 flights12.3%
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 19:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and UA 2211 runs 10 points worse at 57.6%. 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 2211 next to ORD to SEA
Every carrier on ORD to SEA combined arrived on time 67.5% of the time across 5,542 flights, so UA 2211 is 10 points behind it. United flew 1,489 flights on the same city pair under all its flight numbers, including this one, and those ran 74.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 21 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2211thin sample | 253 | 57.6% | 56 min | 1.19% | D |
| All United Airlines on ORD–SEA | 1,489 | 74.0% | 59 min | 0.60% | C+ |
| All carriers on ORD–SEA | 5,542 | 67.5% | 66 min | 1.37% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2211 quarter by quarter
UA 2211 did not run the same all year. Its best quarter was Jul–Sep 2025 at 76.7% on time and its weakest Oct–Dec 2025 at 46.6%, a swing of 30 points on roughly 63 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 202530 flights76.7%
- Oct–Dec 202589 flights46.6%
- Jan–Mar 202653 flights53.8%
- Apr–Jun 202660 flights66.1%
- Jul–Sep 202621 flights—
Scale runs 40% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2211 did best on Saturday at 66.7% on time and worst on Thursday at 45.7%. Each day rests on about 36 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2211 runs when it is late
The 106 late arrivals split 48 under half an hour, 28 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early33 flights13.2%
- Within 15 min111 flights44.4%
- 15–29 min late48 flights19.2%
- 30–59 min late28 flights11.2%
- 1–2 hours late21 flights8.4%
- 2+ hours late9 flights3.6%
Scale runs 0% to 100%.
Share of 250 completed flights by arrival against schedule.
22 of 89 late departures made up the time and arrived on time, 25% of them. In the other direction, 39 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 SEA.
The worst days
Worst days for UA 2211
The latest arrival of the period was on 11 August 2026, 4 hours 45 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 August 2026 | 4 hours 45 minutes | Late-arriving aircraft |
| 26 March 2026 | 4 hours 32 minutes | Late-arriving aircraft |
| 10 March 2026 | 4 hours 14 minutes | Extreme weather |
| 1 December 2025 | 3 hours 52 minutes | Late-arriving aircraft |
| 30 August 2026 | 3 hours 11 minutes | Carrier |
Delay causes
Why UA 2211 runs late
Late-arriving aircraft accounts for 43% of the 5,911 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 25%Carrier
- 24%National Airspace System
- 9%Extreme weather
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,911 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 5,911 delay minutes reported on UA 2211.
Cancellations sit at 1.19% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
12.0% 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 1,721 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The same number turns up on eight other city pairs in the data, including JAX to ORD (124), TPA to ORD (115) and PBI to ORD (31), but none flew often enough under UA 2211 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to SEA only.
One caution: this is a thin sample. 253 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 2211
For a booking, UA 2211 is a flight to put a long connection behind. 12.0% 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 SEA, every carrier and departure
- SEA to ORD, the return direction
- Delta Air Lines 2041 on the same route72.8%
- Alaska Airlines 407 on the same route63.4%
- Alaska Airlines 587 on the same route65.9%
- Alaska Airlines 329 on the same route62.5%
- Chicago O'Hare International (ORD) delay statistics
- Seattle-Tacoma International (SEA) 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.