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 23 March 2026 America/New_York. The flight is expected to land at McGhee Tyson Airport at 10:49 23 March 2026 America/New_York. The flight will last about 1 hours 36 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 23 March 2026
Actual 08:49 23 March 2026
None A3A
Arrival McGhee Tyson Airport
IATA: TYSICAO: KTYS
Scheduled 10:49 23 March 2026
Actual 10:25 23 March 2026
None 11
UA4257 Detail
  • Type: Domestic Flight
  • Code Shares: AC 4741, AV 2346, CM 2237
  • Flight Duration: 1 hours 36 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: Monday 2026-03-23 14:49 PM
  • Current Time in Knoxville: Monday 2026-03-23 14:49 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
Sun 08 Mar
Departed On time
Dulles (IAD) 2026-03-08T09:00
Knoxville (TYS) 2026-03-08T10:49
2026-03-08T08:55
Tue 03 Mar
Scheduled On time
Dulles (IAD) 2026-03-03T09:00
Knoxville (TYS) 2026-03-03T10:49
Sun 22 Feb
Arrived On time
Dulles (IAD) 2026-02-22T09:00
Knoxville (TYS) 2026-02-22T10:49
2026-02-22T08:51
2026-02-22T10:52
Sat 21 Feb
Arrived On time
Dulles (IAD) 2026-02-21T09:00
Knoxville (TYS) 2026-02-21T10:49
2026-02-21T09:00
2026-02-21T10:44
Fri 20 Feb
Scheduled On time
Dulles (IAD) 2026-02-20T09:00
Knoxville (TYS) 2026-02-20T10:49
Tue 17 Feb
Scheduled On time
Dulles (IAD) 2026-02-17T09:00
Knoxville (TYS) 2026-02-17T10:49
Sun 15 Feb
Arrived On time
Dulles (IAD) 2026-02-15T09:00
Knoxville (TYS) 2026-02-15T10:49
2026-02-15T08:50
2026-02-15T10:30
Sat 14 Feb
Scheduled On time
Dulles (IAD) 2026-02-14T09:00
Knoxville (TYS) 2026-02-14T10:49
Tue 10 Feb
Arrived Delayed by 45m
Dulles (IAD) 2026-02-10T09:00
Knoxville (TYS) 2026-02-10T10:57
2026-02-10T10:10
2026-02-10T11:42
Mon 09 Feb
Scheduled On time
Dulles (IAD) 2026-02-09T09:00
Knoxville (TYS) 2026-02-09T10:57

Flight routes similar to United Airlines UA4257

Airline Flight no Departure Arrival
United Airlines UA4914
United Airlines 		23/03/2026
17:40 		1 hours 49 minutes
19:29
Copa Airlines CM2237
Copa Airlines 		23/03/2026
09:00 		1 hours 49 minutes
10:49
Air Canada AC4741
Air Canada 		23/03/2026
09:00 		1 hours 24 minutes
10:49
Brussels Airlines SN8957
Brussels Airlines 		23/03/2026
17:40 		1 hours 21 minutes
19:29
Air Canada AC4743
Air Canada 		23/03/2026
17:40 		1 hours 21 minutes
19:29
Air Canada AC4257
Air Canada 		23/03/2026
12:55 		1 hours 55 minutes
14:50
Copa Airlines CM1306
Copa Airlines 		23/03/2026
17:40 		1 hours 49 minutes
19:29
Avianca AV2346
Avianca 		23/03/2026
09:00 		1 hours 49 minutes
10:49

United Airlines Flight UA4257 FAQs

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

On average, nonstop flight takes 1 hour(s) 36 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 .