| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 05 | SLC | DEN | 16:35 | 17:34 |
Landed
|
Track > |
| Jan 04 | SLC | DEN | 17:10 | 18:07 |
Landed
|
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| Jan 03 | SLC | DEN | 17:13 | 18:16 |
Landed Late
|
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| Jan 02 | SLC | DEN | 16:40 | 17:36 |
Landed
|
Track > |
| Jan 01 | SLC | DEN | 17:12 | 18:15 |
Landed Late
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| Dec 31 | SLC | DEN | 16:27 | 17:23 |
Landed
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| Dec 30 | SLC | DEN | 17:00 | 18:01 |
Landed
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| Dec 29 | SLC | DEN | 18:20 | 19:18 |
Delayed
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| Dec 28 | SLC | DEN | 16:48 | 17:43 |
Landed
|
Track > |
| Dec 27 | SLC | DEN | 18:18 | 19:15 |
Delayed
|
Track > |
United Airlines Flight UA421 connects Salt Lake City, United States to Denver, United States, taking off from Salt Lake City International Airport SLC and landing at Denver International Airport DEN.
How long is the UA421 flight from Salt Lake City to Denver?
The average flight time from Salt Lake City to Denver is 58 minutes. The flight distance is 627 km / 390 miles and the average flight speed is 645 km/h / 401 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA421 Salt Lake City to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA421 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA421 arriving at?
Flight UA421 arrives at Denver International Airport (DEN) Terminal S.
When was the latest UA421 flight?
The latest flight took off on Tuesday, January 6th, 2026 with the flight status being Landed on 17:34.
How else can the flight UA421 be referenced as?
This United Airlines flight can also be referenced as UAL421, UA0421, UA 421, UAL 421.
How often is flight UA421 delayed?
On average, 60% of all UA421 flights are delayed. The average delay is 35 minutes.
Can I get compensation for my delayed or cancelled UA421 flight or baggage issues?
If your UA421 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 UA421 Flight Tracker above for more details.
Flight UA421 is code-shared by 1 airline using the flight number AC5079
Other flights departing from Salt Lake City SLC: UA1747, UA6250, WN1414, DL9971
Other flights arriving at Denver DEN: UA1300, UA778, WN1561, WN1065
All flights connecting Salt Lake City SLC to Denver DEN.
