Flight number record
UA 364
United Airlines · Hartford to Denver
- Route
- BDL → DEN
- Departs
- 08:00
- Flights
- 290
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s UA 364, check with United Airlines.
UA 364 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 50 minutes. That rests on 290 flights, with a median arrival 13 minutes early.
Set against the rest of the country, UA 364's record is 15 points better than the US average of 77.6%. That gap is worth roughly 154 fewer late arrivals for every thousand flights.
Key figures
On time
93.0%
Arrivals under 15 minutes late, of 287 completed flights
Avg delay
51 min
Across delayed arrivals only, not all flights
Cancelled
1.03%
National rate is 1.81%
1 hour+ late
1.4%
National rate is 8.1%
These figures cover 290 flights between July 2025 and June 2026. The median arrival is 13 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 364 flies
UA 364 flies BDL to DEN without a single fixed slot. Its most common scheduled departure was 08:00, used on 152 of 290 flights, with 07:30 (45 flights) and 07:31 (29 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:00152 flights52.4%
- Departs 07:3045 flights15.5%
- Departs 07:3129 flights10.0%
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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 364 runs 9 points better at 93.0%. 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 364 next to BDL to DEN
Every carrier on BDL to DEN combined arrived on time 84.1% of the time across 922 flights, so UA 364 is 9 points ahead of it. United flew 728 flights on the same city pair under all its flight numbers, including this one, and those ran 85.2% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 364thin sample | 290 | 93.0% | 51 min | 1.03% | A |
| All United Airlines on BDL–DEN | 728 | 85.2% | 68 min | 1.10% | A |
| All carriers on BDL–DEN | 922 | 84.1% | 65 min | 1.08% | B |
| United Airlines, whole network | 821,041 | 79.0% | 72 min | 1.01% | B |
Across the year
UA 364 quarter by quarter
UA 364 did not run the same all year. Its best quarter was Apr–Jun 2026 at 100.0% on time and its weakest Jan–Mar 2026 at 83.3%, a swing of 17 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 202592 flights94.5%
- Oct–Dec 202592 flights92.4%
- Jan–Mar 202650 flights83.3%
- Apr–Jun 202656 flights100.0%
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, UA 364 ranged from 88.1% on Saturday to 97.5% on Tuesday. With about 41 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.
Delay causes
Why UA 364 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 1,018 reported delay minutes.
- 35%National Airspace System
- 31%Carrier
- 28%Late-arriving aircraft
- 6%Extreme weather
35% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 352 minutes out of 1,018, against a national NAS share of 21%. The split is drawn from 1,018 delay minutes reported on UA 364.
Cancellations sit at 1.03% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 1.4% 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 1,671 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 three other city pairs in the data, including DEN to BDL (37), CID to ORD (32) and ATL to ORD (6), but none flew often enough under UA 364 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. 290 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 364
For a booking, UA 364 has one of the better records a US domestic flight can show: 93.0% on time and 1.03% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- BDL to DEN, every carrier and departure
- DEN to BDL, the return direction
- United Airlines 2239 on the same route76.9%
- 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
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.