Flight number record

UA 2088

United Airlines · San Juan to Chicago

Route: SJU → ORD
Departs: 15:56
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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, 7 points worse than the national rate of 77.6%. The late ones land roughly 40 minutes behind schedule. That rests on 365 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so UA 2088 runs 7 points behind the country as a whole. Across a thousand flights that is about 66 extra late arrivals.

On time

71.0%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

38 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

4.7%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 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.

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. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:56211 flights57.8%
Departs 16:52126 flights34.5%

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 15:56 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and UA 2088 runs level with that at 71.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 2088 next to SJU to ORD

Every carrier on SJU to ORD combined arrived on time 79.5% of the time across 1,397 flights, so UA 2088 is 9 points behind it. United flew 665 flights on the same city pair under all its flight numbers, including this one, and those ran 82.1% on time. Across its whole network United Airlines managed 79.0%, which this flight trails by 8 points.

UA 2088 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2088	365	71.0%	38 min	0.27%	C+
All United Airlines on SJU–ORD	665	82.1%	39 min	0.60%	B+
All carriers on SJU–ORD	1,397	79.5%	69 min	2.15%	B
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2088 quarter by quarter

Quarter by quarter UA 2088 held fairly steady: 72.8% in Jul–Sep 2025, 65.9% in Oct–Dec 2025, 71.6% in Jan–Mar 2026 and 73.9% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights72.8%
Oct–Dec 202592 flights65.9%
Jan–Mar 202690 flights71.6%
Apr–Jun 202691 flights73.9%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2088 did best on Friday at 78.4% on time and worst on Monday at 63.5%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2088 runs late

One category carries most of the weight here. National Airspace System accounts for 52% of the 3,960 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.

National Airspace System
52%
Late-arriving aircraft
41%
Carrier
6%
Extreme weather
0%

41% 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 3,960 reported delay minutes here, that single category outweighs weather by 41 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 3,960 delay minutes reported on UA 2088.

Cancellations are rare at 0.27%, below the national 1.81% 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

Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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: 9 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.

Where to go next

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.

Key figures