Flight number record
UA 2426
United Airlines · Chicago to Houston
- Route
- ORD → IAH
- Departs
- 20:10
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 2426, check with United Airlines.
UA 2426 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 255 flights, with a median arrival 5 minutes early.
The national on-time rate over the same period is 77.3%, so UA 2426 runs 5 points behind the country as a whole. Across a thousand flights that is about 50 extra late arrivals.
Key figures
On time
72.3%
Arrivals under 15 minutes late, of 253 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
0.78%
National rate is 1.89%
1 hour+ late
13.4%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. Beyond the headline rate, 13.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 2426 flies
UA 2426 flies ORD to IAH without a single fixed slot. Its most common scheduled departure was 20:10, used on 69 of 255 flights, with 19:55 (67 flights) and 19:45 (37 flights) next.
- Departs 20:1069 flights27.1%
- Departs 19:5567 flights26.3%
- Departs 19:4537 flights14.5%
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 20:10 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and UA 2426 runs 2 points better at 72.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
UA 2426 next to ORD to IAH
Every carrier on ORD to IAH combined arrived on time 76.0% of the time across 6,141 flights, so UA 2426 is 4 points behind it. United flew 4,080 flights on the same city pair under all its flight numbers, including this one, and those ran 80.0% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 2426thin sample | 255 | 72.3% | 88 min | 0.78% | C+ |
| All United Airlines on ORD–IAH | 4,080 | 80.0% | 70 min | 0.66% | B+ |
| All carriers on ORD–IAH | 6,141 | 76.0% | 74 min | 1.40% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 2426 quarter by quarter
UA 2426 did not run the same all year. Its best quarter was Jan–Mar 2026 at 79.5% on time and its weakest Apr–Jun 2026 at 66.0%, a swing of 14 points on roughly 64 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 flights70.0%
- Oct–Dec 202591 flights70.0%
- Jan–Mar 202684 flights79.5%
- Apr–Jun 202650 flights66.0%
Scale runs 60% to 85%.
By weekday, UA 2426 did best on Wednesday at 78.9% on time and worst on Sunday at 61.1%. Each day rests on about 36 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 2426 runs when it is late
UA 2426 often beats the schedule: 85 of 253 completed flights, 34%, arrived 15 minutes or more early. The 70 late arrivals split 19 under half an hour, 17 between 30 and 60 minutes, and 34 an hour or more.
- 15+ min early85 flights33.6%
- Within 15 min98 flights38.7%
- 15–29 min late19 flights7.5%
- 30–59 min late17 flights6.7%
- 1–2 hours late15 flights5.9%
- 2+ hours late19 flights7.5%
Scale runs 0% to 100%.
Share of 253 completed flights by arrival against schedule.
A late pushback is often recovered here: of 93 departures that left 15 minutes late or more, 32 still arrived on time. 9 flights left on time and still arrived late.
The worst days
Worst days for UA 2426
The latest arrival of the period was on 2 April 2026, 7 hours 30 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 April 2026 | 7 hours 30 minutes | Late-arriving aircraft |
| 15 March 2026 | 4 hours 33 minutes | Late-arriving aircraft |
| 7 March 2026 | 4 hours 30 minutes | National Airspace System |
| 27 April 2026 | 4 hours 24 minutes | Carrier |
| 26 March 2026 | 3 hours 36 minutes | Late-arriving aircraft |
Delay causes
Why UA 2426 runs late
Late-arriving aircraft accounts for 52% of the 6,154 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 30%Carrier
- 14%National Airspace System
- 3%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 6,154 reported delay minutes here, that single category outweighs weather by 16 to one. The split is drawn from 6,154 delay minutes reported on UA 2426.
Cancellations are rare at 0.78%, 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
13.4% 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.
The 925 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 five other city pairs in the data, including SNA to ORD (159), ORD to DTW (82) and EGE to ORD (56), but none flew often enough under UA 2426 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to IAH only.
One caution: this is a thin sample. 255 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 2426
For a booking, UA 2426 is a flight to put a long connection behind. 13.4% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- ORD to IAH, every carrier and departure
- IAH to ORD, the return direction
- Frontier Airlines 3135 on the same route78.6%
- American Airlines 3144 on the same route52.5%
- United Airlines 1231 on the same route91.4%
- United Airlines 2638 on the same route86.0%
- Chicago O'Hare International (ORD) 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
- 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.