Flight number record
UA 2239
United Airlines · Hartford to Denver
- Route
- BDL → DEN
- Departs
- 15:30
- Flights
- 362
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2239, check with United Airlines.
UA 2239 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 362 flights, with a median arrival 4 minutes early.
Key figures
On time
75.1%
Arrivals under 15 minutes late, of 353 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
1.10%
National rate is 1.89%
1 hour+ late
11.0%
National rate is 8.3%
These figures cover 362 flights between September 2025 and August 2026. Beyond the headline rate, 11.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2239 flies
UA 2239 flies BDL to DEN without a single fixed slot. Its most common scheduled departure was 15:30, used on 174 of 362 flights, with 15:25 (61 flights) next.
- Departs 15:30174 flights48.1%
- Departs 15:2561 flights16.9%
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 15:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 2239 runs 3 points better at 75.1%. 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 2239 next to BDL to DEN
Every carrier on BDL to DEN combined arrived on time 82.6% of the time across 887 flights, so UA 2239 is 8 points behind it. United flew 727 flights on the same city pair under all its flight numbers, including this one, and those ran 84.5% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2239thin sample | 362 | 75.1% | 83 min | 1.10% | B |
| All United Airlines on BDL–DEN | 727 | 84.5% | 75 min | 0.96% | B+ |
| All carriers on BDL–DEN | 887 | 82.6% | 70 min | 1.01% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2239 quarter by quarter
UA 2239 did not run the same all year. Its best quarter was Oct–Dec 2025 at 83.1% on time and its weakest Jul–Sep 2026 at 56.9%, a swing of 26 points on roughly 72 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 flights80.0%
- Oct–Dec 202590 flights83.1%
- Jan–Mar 202690 flights81.6%
- Apr–Jun 202691 flights70.8%
- Jul–Sep 202661 flights56.9%
Scale runs 50% to 90%.
By weekday, UA 2239 ranged from 70.6% on Saturday to 80.0% on Monday. With about 52 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 2239 runs when it is late
UA 2239 often beats the schedule: 98 of 353 completed flights, 28%, arrived 15 minutes or more early. The 88 late arrivals split 29 under half an hour, 20 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early98 flights27.8%
- Within 15 min167 flights47.3%
- 15–29 min late29 flights8.2%
- 30–59 min late20 flights5.7%
- 1–2 hours late19 flights5.4%
- 2+ hours late20 flights5.7%
Scale runs 0% to 100%.
Share of 353 completed flights by arrival against schedule.
15 of 80 late departures made up the time and arrived on time, 19% of them. In the other direction, 23 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 DEN.
The worst days
Worst days for UA 2239
The latest arrival of the period was on 28 April 2026, 9 hours behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 April 2026 | 9 hours | Late-arriving aircraft |
| 27 July 2026 | 7 hours 5 minutes | Late-arriving aircraft |
| 7 August 2026 | 5 hours 21 minutes | Extreme weather |
| 19 December 2025 | 3 hours 47 minutes | National Airspace System |
| 24 May 2026 | 3 hours 45 minutes | Late-arriving aircraft |
Delay causes
Why UA 2239 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 7,272 reported delay minutes.
- 42%Late-arriving aircraft
- 30%National Airspace System
- 22%Carrier
- 6%Extreme weather
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,272 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 7,272 delay minutes reported on UA 2239.
Cancellations sit at 1.10% against a national 1.89%, which is ordinary. Diversions add another 1.38%.
Connections and routes
What a delay on this flight costs
11.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,671 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 one other city pair in the data, including DEN to DFW (156), but none flew often enough under UA 2239 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BDL to DEN only.
One caution: this is a thin sample. 362 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 2239
For a booking, UA 2239 is one of the weaker ways to fly BDL to DEN: 8 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
- BDL to DEN, every carrier and departure
- DEN to BDL, the return direction
- Denver International (DEN) 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.