Flight number record

UA 1834

United Airlines · Chicago to Tampa

Route: ORD → TPA
Departs: 11:12
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 1834, check with United Airlines.

UA 1834 lands a B+, 4 points better than the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 6 minutes early.

Set against the rest of the country, UA 1834's record is 4 points better than the US average of 77.6%. That gap is worth roughly 42 fewer late arrivals for every thousand flights.

On time

81.8%

Arrivals under 15 minutes late, of 363 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

6.3%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 6 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 1834 flies

UA 1834 flies ORD to TPA without a single fixed slot. Its most common scheduled departure was 11:12, used on 86 of 365 flights, with 10:50 (84 flights) and 11:15 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:1286 flights23.6%
Departs 10:5084 flights23.0%
Departs 11:1553 flights14.5%

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 11:12 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and UA 1834 runs 3 points better at 81.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

UA 1834 next to ORD to TPA

Every carrier on ORD to TPA combined arrived on time 73.0% of the time across 3,217 flights, so UA 1834 is 9 points ahead of it. United flew 1,403 flights on the same city pair under all its flight numbers, including this one, and those ran 78.4% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 3 points.

UA 1834 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 1834	365	81.8%	68 min	0.27%	B+
All United Airlines on ORD–TPA	1,403	78.4%	71 min	0.50%	B+
All carriers on ORD–TPA	3,217	73.0%	80 min	1.46%	C
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 1834 quarter by quarter

Quarter by quarter UA 1834 held fairly steady: 83.7% in Jul–Sep 2025, 79.3% in Oct–Dec 2025, 79.8% in Jan–Mar 2026 and 84.4% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights83.7%
Oct–Dec 202592 flights79.3%
Jan–Mar 202690 flights79.8%
Apr–Jun 202691 flights84.4%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 1834 did best on Tuesday at 90.6% on time and worst on Saturday at 78.4%. Each day rests on about 52 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 1834 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 4,476 reported delay minutes.

Late-arriving aircraft
36%
National Airspace System
32%
Carrier
22%
Extreme weather
11%

36% 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 4,476 reported delay minutes here, that single category outweighs weather by 3 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 4,476 delay minutes reported on UA 1834.

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

6.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The 1,012 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 eight other city pairs in the data, including TPA to IAH (128), TPA to EWR (59) and EWR to ORD (50), but none flew often enough under UA 1834 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to TPA only.

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 1834

For a booking, read UA 1834 as 81.8% on time with 0.27% cancelled over 365 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