Flight number record
UA 215
United Airlines · Burlington to Chicago
- Route
- BTV → ORD
- Departs
- 06:00
- Flights
- 294
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 215, check with United Airlines.
UA 215 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 294 flights, with a median arrival 6 minutes early.
Set against the rest of the country, UA 215's record is 8 points better than the US average of 77.3%. That gap is worth roughly 84 fewer late arrivals for every thousand flights.
Key figures
On time
85.7%
Arrivals under 15 minutes late, of 293 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
0.34%
National rate is 1.89%
1 hour+ late
4.4%
National rate is 8.3%
These figures cover 294 flights between September 2025 and August 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.
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Schedule
When UA 215 flies
UA 215 flies BTV to ORD without a single fixed slot. Its most common scheduled departure was 06:00, used on 192 of 294 flights, with 06:10 (62 flights) next.
- Departs 06:00192 flights65.3%
- Departs 06:1062 flights21.1%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 215 runs 4 points worse at 85.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 215 next to BTV to ORD
Every carrier on BTV to ORD combined arrived on time 68.3% of the time across 1,282 flights, so UA 215 is 17 points ahead of it. United flew 684 flights on the same city pair under all its flight numbers, including this one, and those ran 70.5% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 215thin sample | 294 | 85.7% | 58 min | 0.34% | A+ |
| All United Airlines on BTV–ORD | 684 | 70.5% | 82 min | 0.73% | C+ |
| All carriers on BTV–ORD | 1,282 | 68.3% | 94 min | 2.03% | C |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 215 quarter by quarter
UA 215 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.4% on time and its weakest Jan–Mar 2026 at 76.6%, a swing of 16 points on roughly 59 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 202575 flights77.3%
- Jan–Mar 202648 flights76.6%
- Apr–Jun 202679 flights92.4%
- Jul–Sep 202662 flights91.9%
Scale runs 70% to 100%.
By weekday, UA 215 ranged from 82.6% on Saturday to 90.9% on Wednesday. With about 42 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 215 runs when it is late
UA 215 often beats the schedule: 85 of 293 completed flights, 29%, arrived 15 minutes or more early. The 42 late arrivals split 19 under half an hour, 10 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early85 flights29.0%
- Within 15 min166 flights56.7%
- 15–29 min late19 flights6.5%
- 30–59 min late10 flights3.4%
- 1–2 hours late8 flights2.7%
- 2+ hours late5 flights1.7%
Scale runs 0% to 100%.
Share of 293 completed flights by arrival against schedule.
7 of 29 late departures made up the time and arrived on time, 24% of them. In the other direction, 20 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 ORD.
The worst days
Worst days for UA 215
The latest arrival of the period was on 12 June 2026, 4 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 June 2026 | 4 hours 12 minutes | Carrier |
| 1 October 2025 | 3 hours 32 minutes | Carrier |
| 14 April 2026 | 2 hours 25 minutes | National Airspace System |
| 17 November 2025 | 2 hours 8 minutes | National Airspace System |
| 28 July 2026 | 2 hours 6 minutes | Carrier |
Delay causes
Why UA 215 runs late
Carrier accounts for 53% of the 2,419 delay minutes carriers reported here, and the remaining four split what is left.
- 53%Carrier
- 43%National Airspace System
- 4%Extreme weather
The largest share of delay minutes, 53%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,275 of the 2,419 delay minutes reported here. The split is drawn from 2,419 delay minutes reported on UA 215.
Cancellations are rare at 0.34%, 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
Badly late arrivals are rare here: only 4.4% land an hour or more behind schedule, against 8.3% 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.
The 763 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 twelve other city pairs in the data, including ORD to LAS (101), ORD to MSP (56) and ORD to IND (36), but none flew often enough under UA 215 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BTV to ORD only.
One caution: this is a thin sample. 294 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 215
For a booking, UA 215 has one of the better records a US domestic flight can show: 85.7% on time and 0.34% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- BTV to ORD, every carrier and departure
- ORD to BTV, the return direction
- Chicago O'Hare International (ORD) 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.