Flight number record
UA 224
United Airlines · Chicago to Bozeman
- Route
- ORD → BZN
- Departs
- 09:10
- Flights
- 285
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 224, check with United Airlines.
UA 224 lands a B+, 4 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That rests on 285 flights, with a median arrival 3 minutes early.
Set against the rest of the country, UA 224's record is 4 points better than the US average of 77.3%. That gap is worth roughly 40 fewer late arrivals for every thousand flights.
Key figures
On time
81.3%
Arrivals under 15 minutes late, of 283 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.35%
National rate is 1.89%
1 hour+ late
3.2%
National rate is 8.3%
These figures cover 285 flights between September 2025 and August 2026. The median arrival is 3 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 224 flies
UA 224 flies ORD to BZN without a single fixed slot. Its most common scheduled departure was 09:10, used on 123 of 285 flights, with 09:15 (68 flights) and 09:11 (32 flights) next.
- Departs 09:10123 flights43.2%
- Departs 09:1568 flights23.9%
- Departs 09:1132 flights11.2%
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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 224 runs 3 points worse at 81.3%. 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 224 next to ORD to BZN
Every carrier on ORD to BZN combined arrived on time 68.2% of the time across 1,252 flights, so UA 224 is 13 points ahead of it. United flew 720 flights on the same city pair under all its flight numbers, including this one, and those ran 71.6% 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 224thin sample | 285 | 81.3% | 43 min | 0.35% | B+ |
| All United Airlines on ORD–BZN | 720 | 71.6% | 70 min | 0.56% | C+ |
| All carriers on ORD–BZN | 1,252 | 68.2% | 66 min | 0.56% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 224 quarter by quarter
UA 224 did not run the same all year. Its best quarter was Jul–Sep 2026 at 88.7% on time and its weakest Jan–Mar 2026 at 67.2%, a swing of 22 points on roughly 71 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 20256 flights—
- Oct–Dec 202562 flights83.6%
- Jan–Mar 202664 flights67.2%
- Apr–Jun 202691 flights84.4%
- Jul–Sep 202662 flights88.7%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, UA 224 did best on Thursday at 90.2% on time and worst on Friday at 70.0%. Each day rests on about 41 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 224 runs when it is late
The 53 late arrivals split 19 under half an hour, 25 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early64 flights22.6%
- Within 15 min166 flights58.7%
- 15–29 min late19 flights6.7%
- 30–59 min late25 flights8.8%
- 1–2 hours late8 flights2.8%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 283 completed flights by arrival against schedule.
7 of 39 late departures made up the time and arrived on time, 18% of them. In the other direction, 21 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 BZN.
The worst days
Worst days for UA 224
The latest arrival of the period was on 20 June 2026, 2 hours behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across June, March, October and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 June 2026 | 2 hours | Carrier |
| 6 March 2026 | 1 hour 59 minutes | National Airspace System |
| 18 October 2025 | 1 hour 57 minutes | Late-arriving aircraft |
| 2 April 2026 | 1 hour 48 minutes | Carrier |
| 4 April 2026 | 1 hour 29 minutes | Late-arriving aircraft |
Delay causes
Why UA 224 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 2,266 reported delay minutes.
- 37%National Airspace System
- 30%Carrier
- 30%Late-arriving aircraft
- 3%Extreme weather
37% 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 837 minutes out of 2,266, against a national NAS share of 21%. The split is drawn from 2,266 delay minutes reported on UA 224.
Cancellations are rare at 0.35%, 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 3.2% 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 1,185 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 six other city pairs in the data, including RIC to ORD (211), BWI to ORD (24) and SAN to IAH (21), but none flew often enough under UA 224 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to BZN only.
One caution: this is a thin sample. 285 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 224
For a booking, read UA 224 as 81.3% on time with 0.35% cancelled over 285 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ORD to BZN, every carrier and departure
- BZN to ORD, 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.