All airlines flying from Knoxville (TYS) to Washington Dulles (IAD).

FLIGHT SCHEDULE
Direct Flights:
Thu 06:30 Knoxville (TYS) 08:14 Washington Dulles (IAD) Allegiant Air G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-12
Sun 17:56 Knoxville (TYS) 19:40 Washington Dulles (IAD) Allegiant Air G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-22
Sun 18:11 Knoxville (TYS) 19:55 Washington Dulles (IAD) Allegiant Air G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-15
Thu 07:20 Knoxville (TYS) 09:04 Washington Dulles (IAD) Allegiant Air G4 1401 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-05
Thu 13:39 Knoxville (TYS) 15:23 Washington Dulles (IAD) Allegiant Air G4 1407 Non-stop Airbus A320 (320) 1:44 Effective 2026-01-08 through 2026-02-05
Sun 11:27 Knoxville (TYS) 13:11 Washington Dulles (IAD) Allegiant Air G4 1409 Non-stop Airbus A320 (320) 1:44 Effective 2026-04-12 through 2026-05-17
Sun 17:53 Knoxville (TYS) 19:37 Washington Dulles (IAD) Allegiant Air G4 1409 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-01
Thu 17:56 Knoxville (TYS) 19:40 Washington Dulles (IAD) Allegiant Air G4 1409 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-19
Thu 18:11 Knoxville (TYS) 19:55 Washington Dulles (IAD) Allegiant Air G4 1409 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-12
Thu 17:53 Knoxville (TYS) 19:37 Washington Dulles (IAD) Allegiant Air G4 1410 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-26
Thu,Sun 13:21 Knoxville (TYS) 15:05 Washington Dulles (IAD) Allegiant Air G4 1411 Non-stop Airbus A320 (320) 1:44 Effective 2026-03-26 through 2026-03-29
Thu,Sun 18:12 Knoxville (TYS) 19:56 Washington Dulles (IAD) Allegiant Air G4 1411 Non-stop Airbus A320 (320) 1:44 Effective 2026-03-19 through 2026-03-22
Sun 06:30 Knoxville (TYS) 08:14 Washington Dulles (IAD) Allegiant Air G4 1436 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-15
Mon 12:53 Knoxville (TYS) 14:26 Washington Dulles (IAD) Allegiant Air G4 1438 Non-stop Airbus A320 (320) 1:33 Effective 2026-07-06 through 2026-08-03
Fri 12:53 Knoxville (TYS) 14:26 Washington Dulles (IAD) Allegiant Air G4 1439 Non-stop Airbus A320 (320) 1:33 Effective 2026-07-03 through 2026-07-31
Sat 14:23 Knoxville (TYS) 16:07 Washington Dulles (IAD) Allegiant Air G4 1439 Non-stop Airbus A320 (320) 1:44 Valid until 2026-01-03
Sun 07:20 Knoxville (TYS) 09:04 Washington Dulles (IAD) Allegiant Air G4 3024 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-08
Thu 08:20 Knoxville (TYS) 10:04 Washington Dulles (IAD) Allegiant Air G4 3024 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-04-02
Mon 12:49 Knoxville (TYS) 14:16 Washington Dulles (IAD) Allegiant Air G4 3030 Non-stop Airbus A320 (320) 1:27 Effective 2026-06-08 through 2026-06-29
Fri 12:49 Knoxville (TYS) 14:16 Washington Dulles (IAD) Allegiant Air G4 3037 Non-stop Airbus A320 (320) 1:27 Effective 2026-06-05 through 2026-06-26
Mon,Fri 13:07 Knoxville (TYS) 14:40 Washington Dulles (IAD) Allegiant Air G4 3039 Non-stop Airbus A320 (320) 1:33 Effective 2026-08-07 through 2026-08-17
Fri 12:55 Knoxville (TYS) 14:18 Washington Dulles (IAD) Allegiant Air G4 3050 Non-stop Airbus A320 (320) 1:23 Effective 2026-05-22 through 2026-05-29
Mon 12:55 Knoxville (TYS) 14:18 Washington Dulles (IAD) Allegiant Air G4 3054 Non-stop Airbus A320 (320) 1:23 Effective 2026-05-25 through 2026-06-01
Sun 13:39 Knoxville (TYS) 15:23 Washington Dulles (IAD) Allegiant Air G4 3055 Non-stop Airbus A320 (320) 1:44 Effective 2026-01-11 through 2026-02-08
Sun 08:20 Knoxville (TYS) 10:04 Washington Dulles (IAD) Allegiant Air G4 3059 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-04-05
Thu 11:27 Knoxville (TYS) 13:11 Washington Dulles (IAD) Allegiant Air G4 3060 Non-stop Airbus A320 (320) 1:44 Effective 2026-04-09 through 2026-05-14
Mon-Wed,Fri-Sun 05:45 Knoxville (TYS) 07:30 Washington Dulles (IAD) United Airlines UA 4311 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:45 Valid until 2026-01-05
Daily 05:45 Knoxville (TYS) 07:20 Washington Dulles (IAD) United Airlines UA 4311 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:35 Effective from 2026-10-25
Daily 05:50 Knoxville (TYS) 07:33 Washington Dulles (IAD) United Airlines UA 4311 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:43 Effective 2026-05-21 through 2026-09-23
Daily 19:20 Knoxville (TYS) 21:12 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:52 Effective 2026-01-06 through 2026-02-11
Daily 19:20 Knoxville (TYS) 21:04 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-04-30 through 2026-05-20
Daily 19:23 Knoxville (TYS) 21:15 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:52 Valid until 2026-01-05
Daily 19:25 Knoxville (TYS) 21:11 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:46 Effective 2026-02-12 through 2026-03-28
Daily 19:25 Knoxville (TYS) 21:09 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-03-29 through 2026-04-29
Daily 19:35 Knoxville (TYS) 21:05 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:30 Effective 2026-05-21 through 2026-10-24
Daily 19:35 Knoxville (TYS) 21:10 Washington Dulles (IAD) United Airlines UA 4324 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:35 Effective from 2026-10-25
Daily 09:30 Knoxville (TYS) 11:21 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:51 Effective 2026-01-06 through 2026-02-11
Daily 09:40 Knoxville (TYS) 11:26 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:46 Effective 2026-02-12 through 2026-03-28
Daily 09:40 Knoxville (TYS) 11:24 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-03-29 through 2026-05-20
Daily 09:50 Knoxville (TYS) 11:34 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Valid until 2026-01-05
Daily 10:16 Knoxville (TYS) 11:41 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:25 Effective 2026-05-21 through 2026-10-24
Daily 10:16 Knoxville (TYS) 11:51 Washington Dulles (IAD) United Airlines UA 4325 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:35 Effective from 2026-10-25
Daily 14:00 Knoxville (TYS) 15:44 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Valid until 2026-01-05
Daily 14:20 Knoxville (TYS) 15:50 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:30 Effective 2026-05-21 through 2026-10-24
Daily 14:20 Knoxville (TYS) 15:55 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:35 Effective from 2026-10-25
Daily 14:21 Knoxville (TYS) 16:06 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:45 Effective 2026-02-13 through 2026-03-04
Daily 14:21 Knoxville (TYS) 16:07 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:46 Effective 2026-03-05 through 2026-03-28
Daily 14:24 Knoxville (TYS) 16:08 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-03-29 through 2026-04-29
Daily 14:25 Knoxville (TYS) 16:10 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:45 Effective 2026-01-06 through 2026-02-11
Daily 14:25 Knoxville (TYS) 16:09 Washington Dulles (IAD) United Airlines UA 4848 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-04-30 through 2026-05-20

1 2 3 4

A domestic route 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 1:23 and 1:52.

Return (IAD-TYS) flights

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All airlines flying from Knoxville (TYS) to Washington Dulles (IAD).

FLIGHT SCHEDULE

Direct Flights:

Allegiant Air G41399

06:30

Knoxville (TYS)

08:14

Washington Dulles (IAD)

Operates only on 2026-03-12

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41399

17:56

Knoxville (TYS)

19:40

Washington Dulles (IAD)

Operates only on 2026-02-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41399

18:11

Knoxville (TYS)

19:55

Washington Dulles (IAD)

Operates only on 2026-02-15

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41401

07:20

Knoxville (TYS)

09:04

Washington Dulles (IAD)

Operates only on 2026-03-05

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41407

13:39

Knoxville (TYS)

15:23

Washington Dulles (IAD)

Effective 2026-01-08 through 2026-02-05

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41409

11:27

Knoxville (TYS)

13:11

Washington Dulles (IAD)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41409

17:53

Knoxville (TYS)

19:37

Washington Dulles (IAD)

Operates only on 2026-03-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41409

17:56

Knoxville (TYS)

19:40

Washington Dulles (IAD)

Operates only on 2026-02-19

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41409

18:11

Knoxville (TYS)

19:55

Washington Dulles (IAD)

Operates only on 2026-02-12

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41410

17:53

Knoxville (TYS)

19:37

Washington Dulles (IAD)

Operates only on 2026-02-26

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41411

13:21

Knoxville (TYS)

15:05

Washington Dulles (IAD)

Effective 2026-03-26 through 2026-03-29

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41411

18:12

Knoxville (TYS)

19:56

Washington Dulles (IAD)

Effective 2026-03-19 through 2026-03-22

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41436

06:30

Knoxville (TYS)

08:14

Washington Dulles (IAD)

Operates only on 2026-03-15

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41438

12:53

Knoxville (TYS)

14:26

Washington Dulles (IAD)

Effective 2026-07-06 through 2026-08-03

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:33, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41439

12:53

Knoxville (TYS)

14:26

Washington Dulles (IAD)

Effective 2026-07-03 through 2026-07-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 1:33, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G41439

14:23

Knoxville (TYS)

16:07

Washington Dulles (IAD)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43024

07:20

Knoxville (TYS)

09:04

Washington Dulles (IAD)

Operates only on 2026-03-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43024

08:20

Knoxville (TYS)

10:04

Washington Dulles (IAD)

Operates only on 2026-04-02

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43030

12:49

Knoxville (TYS)

14:16

Washington Dulles (IAD)

Effective 2026-06-08 through 2026-06-29

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:27, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43037

12:49

Knoxville (TYS)

14:16

Washington Dulles (IAD)

Effective 2026-06-05 through 2026-06-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 1:27, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43039

13:07

Knoxville (TYS)

14:40

Washington Dulles (IAD)

Effective 2026-08-07 through 2026-08-17

Mon

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 1:33, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43050

12:55

Knoxville (TYS)

14:18

Washington Dulles (IAD)

Effective 2026-05-22 through 2026-05-29

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 1:23, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43054

12:55

Knoxville (TYS)

14:18

Washington Dulles (IAD)

Effective 2026-05-25 through 2026-06-01

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:23, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43055

13:39

Knoxville (TYS)

15:23

Washington Dulles (IAD)

Effective 2026-01-11 through 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43059

08:20

Knoxville (TYS)

10:04

Washington Dulles (IAD)

Operates only on 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

Allegiant Air G43060

11:27

Knoxville (TYS)

13:11

Washington Dulles (IAD)

Effective 2026-04-09 through 2026-05-14

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:44, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA4311

05:45

Knoxville (TYS)

07:30

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu
-

Fri

Sat

Sun

Duration: 1:45, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4311

05:45

Knoxville (TYS)

07:20

Washington Dulles (IAD)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:35, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4311

05:50

Knoxville (TYS)

07:33

Washington Dulles (IAD)

Effective 2026-05-21 through 2026-09-23

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:43, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:20

Knoxville (TYS)

21:12

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:52, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:20

Knoxville (TYS)

21:04

Washington Dulles (IAD)

Effective 2026-04-30 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:23

Knoxville (TYS)

21:15

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:52, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:25

Knoxville (TYS)

21:11

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:46, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:25

Knoxville (TYS)

21:09

Washington Dulles (IAD)

Effective 2026-03-29 through 2026-04-29

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:35

Knoxville (TYS)

21:05

Washington Dulles (IAD)

Effective 2026-05-21 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:30, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4324

19:35

Knoxville (TYS)

21:10

Washington Dulles (IAD)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:35, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

09:30

Knoxville (TYS)

11:21

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:51, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

09:40

Knoxville (TYS)

11:26

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:46, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

09:40

Knoxville (TYS)

11:24

Washington Dulles (IAD)

Effective 2026-03-29 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

09:50

Knoxville (TYS)

11:34

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

10:16

Knoxville (TYS)

11:41

Washington Dulles (IAD)

Effective 2026-05-21 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:25, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4325

10:16

Knoxville (TYS)

11:51

Washington Dulles (IAD)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:35, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:00

Knoxville (TYS)

15:44

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:20

Knoxville (TYS)

15:50

Washington Dulles (IAD)

Effective 2026-05-21 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:30, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:20

Knoxville (TYS)

15:55

Washington Dulles (IAD)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:35, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:21

Knoxville (TYS)

16:06

Washington Dulles (IAD)

Effective 2026-02-13 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:45, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:21

Knoxville (TYS)

16:07

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:46, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:24

Knoxville (TYS)

16:08

Washington Dulles (IAD)

Effective 2026-03-29 through 2026-04-29

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:25

Knoxville (TYS)

16:10

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:45, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

Direct Flights:

United Airlines UA4848

14:25

Knoxville (TYS)

16:09

Washington Dulles (IAD)

Effective 2026-04-30 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)

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A domestic route 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 1:23 and 1:52.

Return (IAD-TYS) flights

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