Flight number record

UA 2188

United Airlines · Denver to Fort Lauderdale

Route: DEN → FLL
Departs: 10:06
Flights: 327
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 2188, check with United Airlines.

UA 2188 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 327 flights, with a median arrival 5 minutes early.

Set against the rest of the country, UA 2188's record is 7 points better than the US average of 77.6%. That gap is worth roughly 72 fewer late arrivals for every thousand flights.

On time

84.8%

Arrivals under 15 minutes late, of 323 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.31%

National rate is 1.81%

1 hour+ late

4.0%

National rate is 8.1%

These figures cover 327 flights between July 2025 and June 2026. The median arrival is 5 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When UA 2188 flies

UA 2188 flies DEN to FLL without a single fixed slot. Its most common scheduled departure was 10:06, used on 42 of 327 flights, with 09:47 (41 flights) and 09:51 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:0642 flights12.8%
Departs 09:4741 flights12.5%
Departs 09:5136 flights11.0%

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 10:06 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 2188 runs level with that at 84.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 2188 next to DEN to FLL

Every carrier on DEN to FLL combined arrived on time 77.4% of the time across 1,630 flights, so UA 2188 is 7 points ahead of it. United flew 1,225 flights on the same city pair under all its flight numbers, including this one, and those ran 81.2% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 6 points.

UA 2188 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 2188thin sample	327	84.8%	53 min	0.31%	B+
All United Airlines on DEN–FLL	1,225	81.2%	58 min	0.33%	B+
All carriers on DEN–FLL	1,630	77.4%	57 min	0.43%	B+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 2188 quarter by quarter

Quarter by quarter UA 2188 held fairly steady: 83.3% in Jul–Sep 2025, 87.0% in Oct–Dec 2025, 83.7% in Jan–Mar 2026 and 84.6% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202555 flights83.3%
Oct–Dec 202592 flights87.0%
Jan–Mar 202689 flights83.7%
Apr–Jun 202691 flights84.6%

Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 2188 did best on Monday at 93.3% on time and worst on Friday at 76.1%. Each day rests on about 47 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 2188 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 2,590 reported delay minutes.

Carrier
39%
National Airspace System
32%
Late-arriving aircraft
29%

The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,012 of the 2,590 delay minutes reported here. The split is drawn from 2,590 delay minutes reported on UA 2188.

Cancellations are rare at 0.31%, 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 4.0% 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 1,703 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 two other city pairs in the data, including DEN to TPA (37) and FLL to EWR (30), but none flew often enough under UA 2188 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to FLL only.

One caution: this is a thin sample. 327 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 2188

For a booking, read UA 2188 as 84.8% on time with 0.31% cancelled over 327 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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