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 10:03 03 May 2026 America/New_York. The flight is expected to land at McGhee Tyson Airport at 11:26 03 May 2026 America/New_York. The flight will last about 1 hours 23 minutes.

Current status of UA4257 is Departed On time Estimated Arrival in 6 minutes

UA4257 - UAL4257 United Airlines (UA)
IAD Dulles United States
Flight IAD to TYS
TYS Knoxville United States
Departed On time Estimated Arrival in 6 minutes
Departure Washington Dulles International Airport
IATA: IADICAO: KIAD
Scheduled 10:03 03 May 2026
Actual 10:01 03 May 2026
B 15
Arrival McGhee Tyson Airport
IATA: TYSICAO: KTYS
Scheduled 11:26 03 May 2026
Estimated 11:26 03 May 2026
None None
UA4257 Detail
  • Type: Domestic Flight
  • Code Shares: AC 3411, NZ 9770
  • Flight Duration: 1 hours 23 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: Sunday 2026-05-03 11:20 AM
  • Current Time in Knoxville: Sunday 2026-05-03 11:20 AM

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
Thu 23 Apr
Arrived On time
Dulles (IAD) 2026-04-23T09:00
Knoxville (TYS) 2026-04-23T10:50
2026-04-23T08:50
2026-04-23T10:13
Sun 19 Apr
Arrived On time
Dulles (IAD) 2026-04-19T09:00
Knoxville (TYS) 2026-04-19T10:50
2026-04-19T08:56
2026-04-19T10:48
Sat 18 Apr
Scheduled On time
Dulles (IAD) 2026-04-18T09:00
Knoxville (TYS) 2026-04-18T10:50
Tue 14 Apr
Arrived On time
Dulles (IAD) 2026-04-14T09:00
Knoxville (TYS) 2026-04-14T10:50
2026-04-14T08:50
2026-04-14T10:27
Mon 13 Apr
Scheduled On time
Dulles (IAD) 2026-04-13T09:00
Knoxville (TYS) 2026-04-13T10:50
Sat 11 Apr
Scheduled On time
Dulles (IAD) 2026-04-11T09:00
Knoxville (TYS) 2026-04-11T10:50
Thu 02 Apr
Scheduled Delayed by 3h 6m
Dulles (IAD) 2026-04-02T09:00
Knoxville (TYS) 2026-04-02T10:50
Mon 23 Mar
Arrived On time
Dulles (IAD) 2026-03-23T09:00
Knoxville (TYS) 2026-03-23T10:49
2026-03-23T08:49
2026-03-23T10:25
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

Flight routes similar to United Airlines UA4257

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Air Canada AC4743
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18:20 		1 hours 52 minutes
20:12
Air Canada AC4257
Air Canada 		03/05/2026
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United Airlines Flight UA4257 FAQs

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

On average, nonstop flight takes 1 hour(s) 23 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 Departed 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 .