Air Canada
flight
AC 4256:
Knoxville - Washington Dulles
Knoxville - Washington Dulles
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC4256
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4311)
Duration: 1:45, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Air Canada AC4256
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4311)
Duration: 1:35, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Codeshare Flights:
Air Canada AC4256
Effective 2026-05-21 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 4311)
Duration: 1:43, non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
- AC 4256 is a domestic flight departing from the Knoxville airport (TYS) and arriving at Washington Dulles airport (IAD).
- The flight distance is 419 miles, or 675 km.
- The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).
- For direct flights, the flight time varies between 1:35 and 1:45.