Flight number record
UA 2147
United Airlines · Chicago to Albany
- Route
- ORD → ALB
- Departs
- 18:35
- Flights
- 304
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2147, check with United Airlines.
UA 2147 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 304 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.6%, so UA 2147 runs 14 points behind the country as a whole. Across a thousand flights that is about 139 extra late arrivals.
Key figures
On time
63.7%
Arrivals under 15 minutes late, of 300 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.32%
National rate is 1.81%
1 hour+ late
13.7%
National rate is 8.1%
These figures cover 304 flights between July 2025 and June 2026. Beyond the headline rate, 13.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When UA 2147 flies
UA 2147 flies ORD to ALB without a single fixed slot. Its most common scheduled departure was 18:35, used on 44 of 304 flights, with 18:30 (41 flights) and 18:06 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 18:3544 flights14.5%
- Departs 18:3041 flights13.5%
- Departs 18:0637 flights12.2%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 18:35 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and UA 2147 runs 5 points worse at 63.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
UA 2147 next to ORD to ALB
Every carrier on ORD to ALB combined arrived on time 75.7% of the time across 2,304 flights, so UA 2147 is 12 points behind it. United flew 756 flights on the same city pair under all its flight numbers, including this one, and those ran 73.7% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2147thin sample | 304 | 63.7% | 71 min | 1.32% | D |
| All United Airlines on ORD–ALB | 756 | 73.7% | 67 min | 1.32% | C |
| All carriers on ORD–ALB | 2,304 | 75.7% | 66 min | 2.47% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 2147 quarter by quarter
Quarter by quarter UA 2147 held fairly steady: 60.7% in Jul–Sep 2025, 67.0% in Oct–Dec 2025, 65.7% in Jan–Mar 2026 and 60.0% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202591 flights60.7%
- Oct–Dec 202591 flights67.0%
- Jan–Mar 202672 flights65.7%
- Apr–Jun 202650 flights60.0%
Scale runs 50% to 70%. Rows with fewer than 30 flights show a dash.
By weekday, UA 2147 did best on Thursday at 71.4% on time and worst on Sunday at 45.2%. Each day rests on about 43 flights, so a gap of 26 points is worth noticing but could still narrow in another year.
Delay causes
Why UA 2147 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 7,751 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.
- 55%Late-arriving aircraft
- 27%Carrier
- 14%National Airspace System
- 5%Extreme weather
55% 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 7,751 reported delay minutes here, that single category outweighs weather by 11 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 7,751 delay minutes reported on UA 2147.
Cancellations sit at 1.32% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.7% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 723 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 same number turns up on four other city pairs in the data, including EWR to SAN (35), SFO to ORD (31) and MCO to ORD (21), but none flew often enough under UA 2147 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to ALB only.
One caution: this is a thin sample. 304 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 2147
For a booking, UA 2147 is a flight to put a long connection behind. 13.7% 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 ALB, every carrier and departure
- ALB to ORD, the return direction
- Envoy Air 4256 on the same route77.7%
- Chicago O'Hare International (ORD) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.