| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 01 | ORD | TYS | 21:15 | 23:24 |
Landed Late
|
Track > |
| Nov 30 | ORD | TYS | 10:30 | 22:55 |
Unknown
|
Track > |
| Nov 29 | ORD | TYS | 20:04 | 22:55 |
Cancelled
|
Track > |
| Claim > | ||||||
| Nov 28 | ORD | TYS | 20:14 | 22:18 |
Landed
|
Track > |
| Nov 26 | ORD | TYS | 22:10 | 00:13 |
Delayed
|
Track > |
| Nov 25 | ORD | TYS | 21:06 | 23:17 |
Landed Late
|
Track > |
| Nov 24 | ORD | TYS | 21:18 | 23:27 |
Landed Late
|
Track > |
| Nov 23 | ORD | TYS | 21:14 | 23:18 |
Landed Late
|
Track > |
| Nov 22 | ORD | TYS | 20:27 | 22:31 |
Landed
|
Track > |
| Nov 21 | ORD | TYS | 22:13 | 00:15 |
Delayed
|
Track > |
United Airlines Flight UA4577 connects Chicago, United States to Knoxville, United States, taking off from Chicago O'Hare International Airport ORD and landing at Knoxville McGhee Tyson Airport TYS.
How long is the UA4577 flight from Chicago to Knoxville?
The average flight time from Chicago to Knoxville is 1 hour and 5 minutes. The flight distance is 765 km / 475 miles and the average flight speed is 642 km/h / 399 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4577 Chicago to Knoxville?
The Airportia On-Time Performance Rating for United Airlines Flight UA4577 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4577 arriving at?
Flight UA4577 arrives at Knoxville McGhee Tyson Airport (TYS) Terminal C.
When was the latest UA4577 flight?
The latest flight took off on Tuesday, December 2nd, 2025 with the flight status being Landed on 23:24.
How else can the flight UA4577 be referenced as?
This United Airlines flight can also be referenced as UAL4577, UA 4577, UAL 4577.
How often is flight UA4577 delayed?
On average, 60% of all UA4577 flights are delayed. The average delay is 44 minutes.
Can I get compensation for my delayed or cancelled UA4577 flight or baggage issues?
If your UA4577 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 UA4577 Flight Tracker above for more details.
Flight UA4577 is code-shared by 2 airlines using the flight numbers LH7954, NZ2945
Other flights departing from Chicago ORD: UA1555, UA5937, NK1331, UA5892
Other flights arriving at Knoxville TYS: G41405, G41397, AA6111, AA5202
All flights connecting Chicago ORD to Knoxville TYS.