United Airlines UA4577 flight status now

Current status of UA4577 is Scheduled On time Estimated Depart in 17 hours, 48 minutes

UA4577 - UAL4577 United Airlines (UA)
ORD Chicago United States
Flight ORD to TYS
TYS Knoxville United States
Scheduled On time Estimated Depart in 17 hours, 48 minutes
Departure O'Hare International Airport
IATA: ORDICAO: KORD
Scheduled 20:04 19 November 2025
Estimated 20:04 19 November 2025
2 F19
Arrival McGhee Tyson Airport
IATA: TYSICAO: KTYS
Scheduled 22:55 19 November 2025
Estimated 22:55 19 November 2025
None None
UA4577 Detail
  • Type: Domestic Flight
  • Code Shares: LH 7954, NZ 2945
  • Flight Duration: 1 hours 51 minutes
  • Flight Distance: 764 kms / 475 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Saturday
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: GJS4577
  • Departure Timezone: America/Chicago
  • Arrival Timezone: America/New_York
  • Current Time in Chicago: Wednesday 2025-11-19 02:16 AM
  • Current Time in Knoxville: Wednesday 2025-11-19 03:16 AM

Domestic flight United Airlines UA4577 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 20:04 19 November 2025 America/Chicago. The flight is expected to land at McGhee Tyson Airport at 22:55 19 November 2025 America/New_York. The flight will last about 1 hours 51 minutes.

Similar flight route from Chicago (ORD) to Knoxville (TYS)

Airline Flight no Departure Arrival
Lufthansa LH7916
Lufthansa 		19/11/2025
17:50 		1 hours 43 minutes
20:33
United Airlines UA5726
United Airlines 		19/11/2025
07:20 		1 hours 45 minutes
10:05
American Airlines AA5163
American Airlines 		19/11/2025
18:37 		1 hours 30 minutes
21:24
Qatar Airways QR2579
Qatar Airways 		19/11/2025
18:37 		1 hours 47 minutes
21:24
GoJet Airlines G74437
GoJet Airlines 		19/11/2025
14:17 		1 hours 58 minutes
17:08
SkyWest Airlines OO5621
SkyWest Airlines 		19/11/2025
17:50 		1 hours 43 minutes
20:33
American Airlines AA5181
American Airlines 		19/11/2025
15:01 		1 hours 45 minutes
17:46
British Airways BA5412
British Airways 		19/11/2025
18:37 		1 hours 47 minutes
21:24

Frequently asked questions, answered

How long is the flight from Chicago to Knoxville?

On average, nonstop flight takes 1 hour(s) 51 minutes, with the flight distance of 764 km (475 miles).

What type of aircraft is used for the United Airlines UA4577 flight?

All United Airlines UA4577 flights are operated using Canadair (Bombardier) Regional Jet 700 and Challenger 870 aircraft.

How many United Airlines UA4577 flights are operated a week?

1 flights per week. The Flight United Airlines UA4577 is operated on Saturday.