| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 23 | ORD | LAS | 17:09 | 18:31 |
Landed
|
Track > |
| Sep 22 | ORD | LAS | 17:09 | 18:39 |
Landed
|
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| Sep 21 | ORD | LAS | 17:55 | 19:13 |
Landed Late
|
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| Sep 20 | ORD | LAS | 18:52 | 20:12 |
Delayed
|
Track > |
| Sep 19 | ORD | LAS | 18:01 | 19:22 |
Landed Late
|
Track > |
| Sep 18 | ORD | LAS | 17:46 | 19:06 |
Landed
|
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| Sep 17 | ORD | LAS | 21:54 | 18:54 |
Unknown
|
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| Sep 16 | ORD | LAS | 17:14 | 18:43 |
Landed
|
Track > |
| Sep 15 | ORD | LAS | 17:36 | 19:10 |
Landed Late
|
Track > |
| Sep 14 | ORD | LAS | 17:36 | 19:04 |
Landed
|
Track > |
United Airlines Flight UA1851 connects Chicago, United States to Las Vegas, United States, taking off from Chicago O'Hare International Airport ORD and landing at Las Vegas McCarran International Airport LAS.
How long is the UA1851 flight from Chicago to Las Vegas?
The average flight time from Chicago to Las Vegas is 3 hours and 24 minutes. The flight distance is 2431 km / 1511 miles and the average flight speed is 701 km/h / 435 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA1851 Chicago to Las Vegas?
The Airportia On-Time Performance Rating for United Airlines Flight UA1851 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA1851 arriving at?
Flight UA1851 arrives at Las Vegas McCarran International Airport (LAS) Terminal 3.
When was the latest UA1851 flight?
The latest flight took off on Thursday, September 24th, 2026 with the flight status being Landed on 18:31.
How else can the flight UA1851 be referenced as?
This United Airlines flight can also be referenced as UAL1851, UA 1851, UAL 1851.
How often is flight UA1851 delayed?
On average, 60% of all UA1851 flights are delayed. The average delay is 27 minutes.
Can I get compensation for my delayed or cancelled UA1851 flight or baggage issues?
If your UA1851 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA1851 Flight Tracker above for more details.
Flight UA1851 is code-shared by 2 airlines using the flight numbers AZ4517, LX3258
Other flights departing from Chicago ORD: UA2618, UA2306, UA1456, BR658
Other flights arriving at Las Vegas LAS: WN2598, WN234, WN132, WN1081
All flights connecting Chicago ORD to Las Vegas LAS.