United Airlines UA4257 Flight Status Today

Domestic flight United Airlines UA4257 takes off from Dulles (IAD) United States to Knoxville (TYS) United States. It's operated by United Airlines. The plane leaves Washington Dulles International Airport at 09:00 20 January 2026 America/New_York. The flight is expected to land at McGhee Tyson Airport at 10:57 20 January 2026 America/New_York. The flight will last about 1 hours 37 minutes.

Current status of UA4257 is Arrived On time

UA4257 - UAL4257 United Airlines (UA)
IAD Dulles United States
Flight IAD to TYS
TYS Knoxville United States
Arrived On time
Departure Washington Dulles International Airport
IATA: IADICAO: KIAD
Scheduled 09:00 20 January 2026
Actual 09:02 20 January 2026
None A4C
Arrival McGhee Tyson Airport
IATA: TYSICAO: KTYS
Scheduled 10:57 20 January 2026
Actual 10:39 20 January 2026
None 7
UA4257 Detail
  • Type: Domestic Flight
  • Code Shares: AC 4741, AV 2346, CM 2237
  • Flight Duration: 1 hours 37 minutes
  • Flight Distance: 676 kms / 420 miles
Airline
  • United Airlines
  • IATA: UA
  • ICAO: UAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 50
  • Freight capacity: 1.5 tons
  • Passenger classes: Economy, Shuttle, Premium Economy
More Detail
  • Aircraft: Embraer EMB-145XR
  • Callsign: F-KLEX4
  • Departure Timezone: America/New_York
  • Arrival Timezone: America/New_York
  • Current Time in Dulles: Tuesday 2026-01-20 13:21 PM
  • Current Time in Knoxville: Tuesday 2026-01-20 13:21 PM

United Airlines UA4257 Flight Statistics

United Airlines
United Airlines
FLIGHT NO UA4257
AIRPLANE Embraer EMB-145XR
ON TIME 12
DELAYED 2
CANCELLED 0
ON TIME 27
DELAYED 3
CANCELLED 0
ON TIME 52
DELAYED 8
CANCELLED 0
ON TIME 74
DELAYED 10
CANCELLED 0
Last 14 days flight data
14 30 60 90
On Time Rate

United Airlines UA4257 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Wed 31 Dec
Scheduled Delayed by 1h 16m
Dulles (IAD) 2025-12-31T09:00
Knoxville (TYS) 2025-12-31T10:56
Tue 30 Dec
Departed Delayed by 2h 16m
Dulles (IAD) 2025-12-30T09:00
Knoxville (TYS) 2025-12-30T10:56
2025-12-30T11:33
Thu 25 Dec
Scheduled On time
Dulles (IAD) 2025-12-25T09:00
Knoxville (TYS) 2025-12-25T10:56
Sat 22 Nov
Arrived On time
Dulles (IAD) 2025-11-22T09:00
Knoxville (TYS) 2025-11-22T10:48
2025-11-22T08:54
2025-11-22T10:36
Thu 20 Nov
Arrived Delayed by 1h 51m
Dulles (IAD) 2025-11-20T09:00
Knoxville (TYS) 2025-11-20T10:48
2025-11-20T11:51
2025-11-20T12:39
Tue 18 Nov
Departed On time
Dulles (IAD) 2025-11-18T09:00
Knoxville (TYS) 2025-11-18T10:48
2025-11-18T08:50
Mon 17 Nov
Scheduled On time
Dulles (IAD) 2025-11-17T09:00
Knoxville (TYS) 2025-11-17T10:48
Sun 16 Nov
Arrived On time
Dulles (IAD) 2025-11-16T09:00
Knoxville (TYS) 2025-11-16T10:48
2025-11-16T08:50
2025-11-16T10:47
Fri 14 Nov
Arrived On time
Dulles (IAD) 2025-11-14T09:00
Knoxville (TYS) 2025-11-14T10:48
2025-11-14T08:49
2025-11-14T10:13
Wed 12 Nov
Arrived On time
Dulles (IAD) 2025-11-12T09:00
Knoxville (TYS) 2025-11-12T10:48
2025-11-12T08:50
2025-11-12T10:33

Flight routes similar to United Airlines UA4257

Airline Flight no Departure Arrival
Brussels Airlines SN8957
Brussels Airlines 		20/01/2026
17:30 		1 hours 57 minutes
19:27
United Airlines UA4308
United Airlines 		20/01/2026
12:55 		1 hours 54 minutes
14:49
Avianca AV2346
Avianca 		20/01/2026
09:00 		1 hours 37 minutes
10:57
Lufthansa LH8966
Lufthansa 		20/01/2026
17:30 		1 hours 57 minutes
19:27
United Airlines UA4914
United Airlines 		20/01/2026
17:30 		1 hours 57 minutes
19:27
Air Canada AC4741
Air Canada 		20/01/2026
09:00 		1 hours 57 minutes
10:57
Copa Airlines CM1306
Copa Airlines 		20/01/2026
17:30 		1 hours 57 minutes
19:27
Ethiopian Airlines ET1378
Ethiopian Airlines 		20/01/2026
12:55 		1 hours 54 minutes
14:49

United Airlines Flight UA4257 FAQs

What is the scheduled flight duration for United Airlines UA4257 flight?

On average, nonstop flight takes 1 hour(s) 37 minutes, with the flight distance of 676 km (420 miles).

What is the current status of United Airlines UA4257 flight?

The current status of flight United Airlines UA4257 is Arrived On time.

What type of aircraft is used for the United Airlines UA4257 flight?

All United Airlines UA4257 flights are operated using Embraer EMB-145XR aircraft.

How many United Airlines UA4257 flights are operated a week?

7 flights per week. The Flight United Airlines UA4257 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .