Flight number record
UA 1834
United Airlines · Chicago to Tampa
- Route
- ORD → TPA
- Departs
- 10:50
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 365 flights, with a median arrival 7 minutes early.
Set against the rest of the country, UA 1834's record is 4 points better than the US average of 77.3%. That gap is worth roughly 42 fewer late arrivals for every thousand flights.
Key figures
On time
81.5%
Arrivals under 15 minutes late, of 362 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
6.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 7 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When UA 1834 flies
UA 1834 flies ORD to TPA without a single fixed slot. Its most common scheduled departure was 10:50, used on 84 of 365 flights, with 11:19 (82 flights) and 11:15 (53 flights) next.
- Departs 10:5084 flights23.0%
- Departs 11:1982 flights22.5%
- Departs 11:1553 flights14.5%
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 10:50 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1834 runs 2 points worse at 81.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
UA 1834 next to ORD to TPA
Every carrier on ORD to TPA combined arrived on time 72.8% of the time across 3,174 flights, so UA 1834 is 9 points ahead of it. United flew 1,443 flights on the same city pair under all its flight numbers, including this one, and those ran 78.0% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1834 | 365 | 81.5% | 66 min | 0.27% | B+ |
| All United Airlines on ORD–TPA | 1,443 | 78.0% | 74 min | 0.62% | B+ |
| All carriers on ORD–TPA | 3,174 | 72.8% | 81 min | 1.48% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1834 quarter by quarter
UA 1834 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 78.7%, a swing of 11 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 flights90.0%
- Oct–Dec 202592 flights79.3%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights84.4%
- Jul–Sep 202662 flights78.7%
Scale runs 70% to 95%.
By weekday, UA 1834 did best on Tuesday at 92.3% on time and worst on Saturday at 74.5%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1834 runs when it is late
UA 1834 often beats the schedule: 114 of 362 completed flights, 31%, arrived 15 minutes or more early. The 67 late arrivals split 28 under half an hour, 14 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early114 flights31.5%
- Within 15 min181 flights50.0%
- 15–29 min late28 flights7.7%
- 30–59 min late14 flights3.9%
- 1–2 hours late18 flights5.0%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 362 completed flights by arrival against schedule.
18 of 63 late departures made up the time and arrived on time, 29% of them. In the other direction, 22 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 TPA.
The worst days
Worst days for UA 1834
The latest arrival of the period was on 29 November 2025, 6 hours 11 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across November, July, March and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 November 2025 | 6 hours 11 minutes | Extreme weather |
| 27 July 2026 | 4 hours 25 minutes | National Airspace System |
| 6 March 2026 | 4 hours 17 minutes | Late-arriving aircraft |
| 26 December 2025 | 3 hours 47 minutes | National Airspace System |
| 7 December 2025 | 3 hours 40 minutes | Late-arriving aircraft |
Delay causes
Why UA 1834 runs late
National Airspace System accounts for 42% of the 4,417 delay minutes carriers reported here, and the remaining four split what is left.
- 42%National Airspace System
- 32%Late-arriving aircraft
- 14%Extreme weather
- 13%Carrier
Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 4,417 delay minutes reported on UA 1834.
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
6.9% 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 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.
The same number turns up on seven other city pairs in the data, including TPA to IAH (115), BOS to ORD (76) and TPA to EWR (59), 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 81.5% on time with 0.27% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ORD to TPA, every carrier and departure
- TPA to ORD, the return direction
- American Airlines 2920 on the same route78.6%
- United Airlines 2326 on the same route90.5%
- Chicago O'Hare International (ORD) delay statistics
- Tampa International (TPA) 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
- Worst months to fly in the US, ranked by the data
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.