| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 25 | STL | DEN | 09:23 | 10:15 |
Landed
|
Track > |
| Oct 24 | STL | DEN | 09:09 | 10:04 |
Landed
|
Track > |
| Oct 23 | STL | DEN | 11:03 | 12:01 |
Delayed
|
Track > |
| Oct 22 | STL | DEN | 09:30 | 10:30 |
Landed
|
Track > |
| Oct 21 | STL | DEN | 09:03 | 10:11 |
Landed
|
Track > |
| Oct 20 | STL | DEN | 09:19 | 10:28 |
Landed
|
Track > |
| Oct 19 | STL | DEN | 09:14 | 10:16 |
Landed
|
Track > |
| Oct 18 | STL | DEN | 09:24 | 10:25 |
Landed
|
Track > |
| Oct 17 | STL | DEN | 09:12 | 10:08 |
Landed
|
Track > |
| Oct 16 | STL | DEN | 10:44 | 11:41 |
Delayed
|
Track > |
United Airlines Flight UA401 connects St. Louis, United States to Denver, United States, taking off from St. Louis Lambert International Airport STL and landing at Denver International Airport DEN.
How long is the UA401 flight from St. Louis to Denver?
The average flight time from St. Louis to Denver is 1 hour and 59 minutes. The flight distance is 1235 km / 768 miles and the average flight speed is 620 km/h / 385 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA401 St. Louis to Denver?
The Airportia On-Time Performance Rating for United Airlines Flight UA401 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA401 flight?
The latest flight took off on Saturday, October 25th, 2025 with the flight status being Landed on 10:15.
How else can the flight UA401 be referenced as?
This United Airlines flight can also be referenced as UAL401, UA0401, UA 401, UAL 401.
How often is flight UA401 delayed?
On average, 50% of all UA401 flights are delayed. The average delay is 41 minutes.
Can I get compensation for my delayed or cancelled UA401 flight or baggage issues?
If your UA401 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 UA401 Flight Tracker above for more details.
Flight UA401 is code-shared by 1 airline using the flight number AC4948
Other flights departing from St. Louis STL: WN1014, WN2934, AA2497, AA3563
Other flights arriving at Denver DEN: WN3253, UA4710, UA5666, OO5642
All flights connecting St. Louis STL to Denver DEN.
