United Airlines UA4521 Flight Status Today

Domestic flight United Airlines UA4521 takes off from Chicago (ORD) United States to Knoxville (TYS) United States. It's operated by United Airlines. The plane leaves O'Hare International Airport at 14:07 29 December 2025 America/Chicago. The flight is expected to land at McGhee Tyson Airport at 17:00 29 December 2025 America/New_York. The flight will last about 1 hours 53 minutes.

Current status of UA4521 is Scheduled On time Estimated Depart in 13 hours, 21 minutes

UA4521 - UAL4521 United Airlines (UA)
ORD Chicago United States
Flight ORD to TYS
TYS Knoxville United States
Scheduled On time Estimated Depart in 13 hours, 21 minutes
Departure O'Hare International Airport
IATA: ORDICAO: KORD
Scheduled 14:07 29 December 2025
Estimated 14:07 29 December 2025
2 F11
Arrival McGhee Tyson Airport
IATA: TYSICAO: KTYS
Scheduled 17:00 29 December 2025
Estimated 17:00 29 December 2025
None None
UA4521 Detail
  • Type: Domestic Flight
  • Code Shares: AC 4513, NH 7190, NZ 2943
  • Flight Duration: 1 hours 53 minutes
  • Flight Distance: 764 kms / 475 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Thursday
Passenger Services
  • Service type: Normal passenger
  • Seats: 70
  • Freight capacity: 1.9 tons
  • Passenger classes: First Class, Economy, Business Class, Shuttle
More Detail
  • Aircraft: Canadair (Bombardier) Regional Jet 700 and Challenger 870
  • Callsign: F-KMRB1
  • Departure Timezone: America/Chicago
  • Arrival Timezone: America/New_York
  • Current Time in Chicago: Monday 2025-12-29 00:46 AM
  • Current Time in Knoxville: Monday 2025-12-29 01:46 AM

Flight routes similar to United Airlines UA4521

Airline Flight no Departure Arrival
ANA NH7192
ANA 		29/12/2025
19:48 		1 hours 51 minutes
22:39
American Airlines AA5027
American Airlines 		29/12/2025
13:11 		1 hours 34 minutes
15:56
Emirates EK6311
Emirates 		29/12/2025
19:48 		1 hours 51 minutes
22:39
American Airlines AA5333
American Airlines 		29/12/2025
18:33 		1 hours 48 minutes
21:21
Republic Airlines YX4495
Republic Airlines 		29/12/2025
11:41 		1 hours 50 minutes
14:31
Japan Airlines JL7440
Japan Airlines 		29/12/2025
13:11 		1 hours 45 minutes
15:56
Lufthansa LH7916
Lufthansa 		29/12/2025
17:50 		1 hours 43 minutes
20:33
PSA Airlines OH5181
PSA Airlines 		29/12/2025
14:24 		1 hours 56 minutes
17:20

United Airlines Flight UA4521 FAQs

What is the scheduled flight duration for United Airlines UA4521 flight?

On average, nonstop flight takes 1 hour(s) 53 minutes, with the flight distance of 764 km (475 miles).

What is the current status of United Airlines UA4521 flight?

The current status of flight United Airlines UA4521 is Scheduled On time.

What type of aircraft is used for the United Airlines UA4521 flight?

All United Airlines UA4521 flights are operated using Canadair (Bombardier) Regional Jet 700 and Challenger 870 aircraft.

How many United Airlines UA4521 flights are operated a week?

1 flights per week. The Flight United Airlines UA4521 is operated on Thursday.