| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 03 | MCI | DEN | 17:35 | 18:15 |
En-Route
|
Track > |
| Sep 02 | MCI | DEN | 17:39 | 18:08 |
Landed
|
Track > |
| Sep 01 | MCI | DEN | 17:32 | 17:57 |
Landed
|
Track > |
| Aug 31 | MCI | DEN | 17:31 | 17:53 |
Landed
|
Track > |
| Aug 30 | MCI | DEN | 18:29 | 19:07 |
Delayed
|
Track > |
| Aug 29 | MCI | DEN | 18:15 | 18:13 |
Unknown
|
Track > |
| Aug 28 | MCI | DEN | 18:11 | 18:37 |
Landed Late
|
Track > |
| Aug 27 | MCI | DEN | 17:41 | 18:11 |
Landed
|
Track > |
| Aug 26 | MCI | DEN | 19:53 | 20:18 |
Delayed
|
Track > |
| Aug 25 | MCI | DEN | 17:28 | 17:55 |
Landed
|
Track > |
United Airlines Flight UA2123 connects Kansas City, United States to Denver, United States, taking off from Kansas City International Airport MCI and landing at Denver International Airport DEN.
How long is the UA2123 flight from Kansas City to Denver?
The average flight time from Kansas City to Denver is 1 hour and 27 minutes. The flight distance is 855 km / 531 miles and the average flight speed is 554 km/h / 344 mph.
How many UA2123 flights are operated per week?
7 flights per week. The flight UA2123 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of United Airlines Flight UA2123 Kansas City to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA2123 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA2123 flight?
The latest flight took off on Friday, September 4th, 2026 with the flight status being En-Route on 18:15.
How else can the flight UA2123 be referenced as?
This United Airlines flight can also be referenced as UAL2123, UA 2123, UAL 2123.
How often is flight UA2123 delayed?
On average, 30% of all UA2123 flights are delayed. The average delay is 65 minutes.
Can I get compensation for my delayed or cancelled UA2123 flight or baggage issues?
If your UA2123 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 UA2123 Flight Tracker above for more details.
Flight UA2123 is code-shared by 1 airline using the flight number AC4574
Other flights departing from Kansas City MCI: WN2538, UA1738, AA3030, WN1386
Other flights arriving at Denver DEN: UA1490, OO3669, OO5989, KG4144
All flights connecting Kansas City MCI to Denver DEN.
