Flight profile · United Airlines
UA406
Las Vegas (LAS) to Newark (EWR) · scheduled 11:59 PM – 7:00 AM
How UA406 performs
925 operations, October 2023 – August 2026.
Between its first and last recorded date on LAS → EWR, UA406 averaged about 6 operations a week (925 in 1,038 days, cancelled ones included).
UA406 arrived on time 83.1% of the time, against 79.2% for all LAS → EWR flights, so this departure is 3.9 percentage points better than the route as a whole. Against United Airlines’ own flights on this route it is 3.8 points better.
Source: US DOT Bureau of Transportation Statistics · 925 operations, October 2023 – August 2026 · If UA406 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where UA406 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
Ask for the position of UA406 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| UA406 | 83.1% | 2.27% | -9 min | 5.3% | 925 |
| United Airlines on LAS → EWR | 79.3% | 1.59% | -10 min | 8.9% | 7,928 |
| All LAS → EWR flights | 79.2% | 1.69% | -10 min | 8.8% | 9,644 |
UA406 cancelled 21 of 925 operations (2.27%), above the 1.69% for LAS → EWR.
5.3% of UA406’s arrivals were an hour or more late, against 8.8% across LAS → EWR, so the long delays are less common on this number than on the route.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – August 2026
Why UA406 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA406 on LAS → EWR. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies UA406 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, UA406 pushed back an average of 35 minutes late; when it came in on time or early, an average of 1 minute early.
Matched by tail number to the aircraft’s previous flight into LAS: 893 of 904 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| UA406 | 24% | 52% | 7% |
| Network, same turn | 17% | 69% | 9% |
85 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often UA406’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often UA406 left 15 or more minutes late is lower than the network’s.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – August 2026
From pushback to gate
When it leaves LAS late, does that still matter by the time it reaches EWR?
UA406 pushes back an average of 10.2 minutes late and reaches the gate at EWR an average of 0.7 minutes early. The 10.9 minutes between those two figures are slack the published schedule already carries, so on average a late pushback on this flight is made up before the gate. It spends 16.6 minutes on the taxiways at LAS, 1.0 minutes longer than a typical LAS departure in the same hour.
On arrival at EWR, UA406 spends 9.1 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.1 minutes shorter than a typical EWR arrival (10.1 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 21,866 LAS departures. Taxi-in is landing to gate, set against 397,792 arrivals at EWR. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – August 2026
The hour it leaves LAS
UA406 has one departure time, 11:59 PM, so this is what that hour at LAS is worth.
On-time arrival rate. 21,866 departures from LAS are scheduled in the 11 PM–12 AM hour over the period, against 583,449 across the whole day.
UA406 is scheduled out of LAS at 11:59 PM, in the 11 PM–12 AM bank. Departures from LAS in that hour arrive on time 80.3% of the time against 77.8% across the airport’s whole day, so the hour UA406 leaves in is an ordinary one for LAS and explains nothing about its record either way.
Both airport figures cover every destination from LAS, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – August 2026 · Hours below 120 departures are not scored.
By day of week
Does UA406 run worse on particular days?
Tuesday is historically the most reliable day and Thursday the least, a gap of 13.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · October 2023 – August 2026 · Days with fewer than 120 operations are not scored.
Other routes UA406 has flown
Carriers reassign flight numbers. UA406 also served these 14 other city pairs in the period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SFO→LAS San Francisco to Las Vegas | May 22, 2025 – August 31, 2026 | 430 | 77.3% |
| EWR→MCI Newark to Kansas City | July 4, 2026 | 1 | — |
| IAD→SFO Washington to San Francisco | March 5–28, 2026 | 18 | — |
| BZN→SFO Bozeman to San Francisco | August 19, 2025 – January 5, 2026 | 87 | — |
| ORD→SAT Chicago to San Antonio | July 4, 2025 | 1 | — |
| XNA→ORD Fayetteville/Springdale/Rogers to Chicago | June 7, 2024 | 1 | — |
| OMA→ORD Omaha to Chicago | May 24, 2024 | 1 | — |
| LGA→ORD New York to Chicago | December 21, 2023 – January 8, 2024 | 4 | — |
| ORD→LAS Chicago to Las Vegas | January 8, 2024 | 1 | — |
| ORD→SRQ Chicago to Sarasota/Bradenton | December 25, 2023 – January 5, 2024 | 10 | — |
| EWR→IAD Newark to Washington | December 1–20, 2023 | 20 | — |
| MCO→IAH Orlando to Houston | November 28–30, 2023 | 3 | — |
| AUS→EWR Austin to Newark | September 29, 2023 – October 28, 2023 | 29 | — |
| CLE→LAX Cleveland to Los Angeles | September 5–28, 2023 | 24 | — |
The figures above describe only LAS → EWR, the route UA406 flies now.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
32 min late
against a median of 9 min early
Percentiles over 925 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering October 2023 – August 2026
Data and methodology
Calculated by FlyerIntel from 925 records of UA406 operating LAS → EWR, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed