Flight number record
UA 226
United Airlines · Boston to Houston
- Route
- BOS → IAH
- Departs
- 07:25
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 226, check with United Airlines.
UA 226 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 364 flights, with a median arrival 19 minutes early.
Set against the rest of the country, UA 226's record is 16 points better than the US average of 77.3%. That gap is worth roughly 160 fewer late arrivals for every thousand flights.
Key figures
On time
93.3%
Arrivals under 15 minutes late, of 358 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
1.65%
National rate is 1.89%
1 hour+ late
0.6%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 19 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 226 flies
UA 226 flies BOS to IAH without a single fixed slot. Its most common scheduled departure was 07:25, used on 166 of 364 flights, with 07:30 (55 flights) and 07:15 (45 flights) next.
- Departs 07:25166 flights45.6%
- Departs 07:3055 flights15.1%
- Departs 07:1545 flights12.4%
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 07:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 226 runs 4 points better at 93.3%. 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 226 next to BOS to IAH
Every carrier on BOS to IAH combined arrived on time 80.1% of the time across 2,018 flights, so UA 226 is 13 points ahead of it. United flew 1,550 flights on the same city pair under all its flight numbers, including this one, and those ran 82.3% on time. Across its whole network United Airlines managed 78.8%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 226thin sample | 364 | 93.3% | 61 min | 1.65% | A |
| All United Airlines on BOS–IAH | 1,550 | 82.3% | 75 min | 1.29% | B |
| All carriers on BOS–IAH | 2,018 | 80.1% | 69 min | 1.68% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 226 quarter by quarter
Quarter by quarter UA 226 held fairly steady: 93.3% in Jul–Sep 2025, 95.7% in Oct–Dec 2025, 91.6% in Jan–Mar 2026, 92.3% in Apr–Jun 2026 and 93.5% in Jul–Sep 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202592 flights95.7%
- Jan–Mar 202689 flights91.6%
- Apr–Jun 202691 flights92.3%
- Jul–Sep 202662 flights93.5%
Scale runs 85% to 100%.
By weekday, UA 226 ranged from 86.5% on Saturday to 96.2% on Sunday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late UA 226 runs when it is late
UA 226 often beats the schedule: 224 of 358 completed flights, 63%, arrived 15 minutes or more early. The 24 late arrivals split 10 under half an hour, 12 between 30 and 60 minutes, and 2 an hour or more.
- 15+ min early224 flights62.6%
- Within 15 min110 flights30.7%
- 15–29 min late10 flights2.8%
- 30–59 min late12 flights3.4%
- 1–2 hours late0 flights0.0%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 358 completed flights by arrival against schedule.
A late pushback is often recovered here: of 22 departures that left 15 minutes late or more, 11 still arrived on time. 13 flights left on time and still arrived late.
The worst days
Worst days for UA 226
The latest arrival of the period was on 7 August 2026, 9 hours 34 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 August 2026 | 9 hours 34 minutes | Carrier |
| 22 July 2026 | 3 hours 44 minutes | Carrier |
| 24 January 2026 | 57 minutes | Carrier |
| 21 April 2026 | 48 minutes | Carrier |
| 23 May 2026 | 44 minutes | National Airspace System |
Delay causes
Why UA 226 runs late
Carrier accounts for 70% of the 1,473 delay minutes carriers reported here, and the remaining four split what is left.
- 70%Carrier
- 27%National Airspace System
- 2%Extreme weather
- 1%Late-arriving aircraft
The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,024 of the 1,473 delay minutes reported here. The split is drawn from 1,473 delay minutes reported on UA 226.
Cancellations sit at 1.65% against a national 1.89%, 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 0.6% 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.
At 1,597 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 CLT to EWR (1), but none flew often enough under UA 226 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to IAH only.
One caution: this is a thin sample. 364 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 226
For a booking, read UA 226 as 93.3% on time with 1.65% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BOS to IAH, every carrier and departure
- IAH to BOS, the return direction
- JetBlue Airways 2033 on the same route74.0%
- United Airlines 1976 on the same route88.5%
- Boston Logan International (BOS) delay statistics
- George Bush Intercontinental (IAH) 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.