Flight number record
UA 2088
United Airlines · San Juan to Chicago
- Route
- SJU → ORD
- Departs
- 15:56
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2088, check with United Airlines.
UA 2088 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.3%. The late ones land roughly 45 minutes behind schedule. That rests on 365 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.3%, so UA 2088 runs 9 points behind the country as a whole. Across a thousand flights that is about 93 extra late arrivals.
Key figures
On time
68.0%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
6.1%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When UA 2088 flies
UA 2088 flies SJU to ORD without a single fixed slot. Its most common scheduled departure was 15:56, used on 211 of 365 flights, with 16:52 (126 flights) next.
- Departs 15:56211 flights57.8%
- Departs 16:52126 flights34.5%
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 15:56 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 2088 runs 4 points worse at 68.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 2088 next to SJU to ORD
Every carrier on SJU to ORD combined arrived on time 78.3% of the time across 1,383 flights, so UA 2088 is 10 points behind it. United flew 657 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2088 | 365 | 68.0% | 43 min | 0.27% | C+ |
| All United Airlines on SJU–ORD | 657 | 80.5% | 43 min | 0.61% | B+ |
| All carriers on SJU–ORD | 1,383 | 78.3% | 74 min | 2.39% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2088 quarter by quarter
UA 2088 did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.9% on time and its weakest Jul–Sep 2025 at 60.0%, a swing of 14 points on roughly 73 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 flights60.0%
- Oct–Dec 202592 flights65.9%
- Jan–Mar 202690 flights71.6%
- Apr–Jun 202691 flights73.9%
- Jul–Sep 202662 flights61.3%
Scale runs 50% to 80%.
By weekday, UA 2088 did best on Friday at 74.5% on time and worst on Monday at 58.5%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2088 runs when it is late
The 115 late arrivals split 57 under half an hour, 36 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early78 flights21.7%
- Within 15 min166 flights46.2%
- 15–29 min late57 flights15.9%
- 30–59 min late36 flights10.0%
- 1–2 hours late17 flights4.7%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
13 of 61 late departures made up the time and arrived on time, 21% of them. In the other direction, 67 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 ORD.
The worst days
Worst days for UA 2088
The latest arrival of the period was on 12 August 2026, 5 hours 57 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 August 2026 | 5 hours 57 minutes | Late-arriving aircraft |
| 15 August 2026 | 2 hours 58 minutes | Late-arriving aircraft |
| 7 September 2025 | 2 hours 28 minutes | Late-arriving aircraft |
| 8 November 2025 | 2 hours 9 minutes | Late-arriving aircraft |
| 16 March 2026 | 2 hours 5 minutes | Late-arriving aircraft |
Delay causes
Why UA 2088 runs late
Late-arriving aircraft accounts for 52% of the 4,954 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 42%National Airspace System
- 5%Carrier
- 0%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,954 reported delay minutes here, that single category outweighs weather by 52 to one. The split is drawn from 4,954 delay minutes reported on UA 2088.
Cancellations are rare at 0.27%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
6.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 45 minutes, which a normal layover absorbs.
At 2,072 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.
Every one of the 365 flights under UA 2088 in the data flew SJU to ORD. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 2088
For a booking, UA 2088 is one of the weaker ways to fly SJU to ORD: 10 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- SJU to ORD, every carrier and departure
- ORD to SJU, the return direction
- United Airlines 2089 on the same route96.1%
- Luis Munoz Marin International (SJU) delay statistics
- 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.