Flight number record
UA 706
United Airlines · Las Vegas to Chicago
- Route
- LAS → ORD
- Departs
- 14:25
- Flights
- 309
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 706, check with United Airlines.
UA 706 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 309 flights, with a median arrival 7 minutes late.
The national on-time rate over the same period is 77.3%, so UA 706 runs 12 points behind the country as a whole. Across a thousand flights that is about 123 extra late arrivals.
Key figures
On time
65.0%
Arrivals under 15 minutes late, of 306 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
13.1%
National rate is 8.3%
These figures cover 309 flights between September 2025 and August 2026. Beyond the headline rate, 13.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When UA 706 flies
UA 706 flies LAS to ORD without a single fixed slot. Its most common scheduled departure was 14:25, used on 82 of 309 flights, with 14:41 (46 flights) and 14:34 (42 flights) next.
- Departs 14:2582 flights26.5%
- Departs 14:4146 flights14.9%
- Departs 14:3442 flights13.6%
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 14:25 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and UA 706 runs 7 points worse at 65.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
UA 706 next to LAS to ORD
Every carrier on LAS to ORD combined arrived on time 75.6% of the time across 5,148 flights, so UA 706 is 11 points behind it. United flew 2,354 flights on the same city pair under all its flight numbers, including this one, and those ran 78.2% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 706thin sample | 309 | 65.0% | 90 min | 0.00% | C+ |
| All United Airlines on LAS–ORD | 2,354 | 78.2% | 76 min | 0.34% | B+ |
| All carriers on LAS–ORD | 5,148 | 75.6% | 88 min | 1.24% | B |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 706 quarter by quarter
UA 706 did not run the same all year. Its best quarter was Jan–Mar 2026 at 69.7% on time and its weakest Jul–Sep 2026 at 54.1%, a swing of 16 points on roughly 77 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.
- Oct–Dec 202566 flights66.7%
- Jan–Mar 202690 flights69.7%
- Apr–Jun 202691 flights66.7%
- Jul–Sep 202662 flights54.1%
Scale runs 45% to 75%.
By weekday, UA 706 did best on Saturday at 81.8% on time and worst on Thursday at 51.2%. Each day rests on about 44 flights, so a gap of 31 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 706 runs when it is late
The 107 late arrivals split 37 under half an hour, 30 between 30 and 60 minutes, and 40 an hour or more.
- 15+ min early36 flights11.8%
- Within 15 min163 flights53.3%
- 15–29 min late37 flights12.1%
- 30–59 min late30 flights9.8%
- 1–2 hours late19 flights6.2%
- 2+ hours late21 flights6.9%
Scale runs 0% to 100%.
Share of 306 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 69 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 46 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 706
The latest arrival of the period was on 15 July 2026, 11 hours 4 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, March, August and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 July 2026 | 11 hours 4 minutes | Carrier |
| 27 March 2026 | 8 hours 56 minutes | Late-arriving aircraft |
| 7 August 2026 | 7 hours 40 minutes | Carrier |
| 29 November 2025 | 6 hours 30 minutes | National Airspace System |
| 3 July 2026 | 5 hours 48 minutes | National Airspace System |
Delay causes
Why UA 706 runs late
National Airspace System accounts for 49% of the 9,622 delay minutes carriers reported here, and the remaining four split what is left.
- 49%National Airspace System
- 26%Carrier
- 25%Late-arriving aircraft
49% 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 4,726 minutes out of 9,622, against a national NAS share of 21%. The split is drawn from 9,622 delay minutes reported on UA 706.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
13.1% 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.
At 1,514 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 SFO to PHL (55), PHL to ORD (21) and ORD to OMA (2), but none flew often enough under UA 706 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAS to ORD only.
One caution: this is a thin sample. 309 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 706
For a booking, UA 706 is a flight to put a long connection behind. 13.1% 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
- LAS to ORD, every carrier and departure
- ORD to LAS, the return direction
- United Airlines 664 on the same route86.2%
- United Airlines 2102 on the same route90.7%
- American Airlines 2258 on the same route88.1%
- United Airlines 1583 on the same route80.1%
- Harry Reid International (LAS) delay statistics
- 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
- How often a connection fails at the major US hubs
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.