United Airlines flights from Chicago O'Hare (ORD) to Knoxville (TYS).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 18:00 Chicago O'Hare (ORD) 1 20:45 Knoxville (TYS)
United Airlines UA 1211 Non-stop Airbus A319 (319) 1:45 Effective 2026-04-30 through 2026-05-20
Daily 18:01 Chicago O'Hare (ORD) 1 20:46 Knoxville (TYS)
United Airlines UA 1211 Non-stop Airbus A319 (319) 1:45 Effective 2026-03-29 through 2026-04-29
Mon-Fri,Sun 18:06 Chicago O'Hare (ORD) 1 20:47 Knoxville (TYS)
United Airlines UA 1211 Non-stop Boeing 737-700 (73G) 1:41 Effective 2026-03-05 through 2026-03-27
Sat 18:07 Chicago O'Hare (ORD) 1 20:48 Knoxville (TYS)
United Airlines UA 1211 Non-stop Boeing 737-700 (73G) 1:41 Effective 2026-03-07 through 2026-03-28
Tue 18:10 Chicago O'Hare (ORD) 1 20:52 Knoxville (TYS)
United Airlines UA 1583 Non-stop Airbus A320 (320) 1:42 Operates only on 2026-01-06
Daily 18:10 Chicago O'Hare (ORD) 1 20:52 Knoxville (TYS)
United Airlines UA 1583 Non-stop Airbus A319 (319) 1:42 Effective 2026-01-07 through 2026-01-15
Wed,Fri 18:10 Chicago O'Hare (ORD) 1 20:52 Knoxville (TYS)
United Airlines UA 1583 Non-stop Airbus A320 (320) 1:42 Effective 2026-01-16 through 2026-01-21
Mon,Tue,Thu-Sun 18:10 Chicago O'Hare (ORD) 1 20:52 Knoxville (TYS)
United Airlines UA 1583 Non-stop Airbus A319 (319) 1:42 Effective 2026-01-17 through 2026-01-27
Daily 18:10 Chicago O'Hare (ORD) 1 20:52 Knoxville (TYS)
United Airlines UA 1583 Non-stop Airbus A319 (319) 1:42 Effective 2026-01-28 through 2026-02-11
Mon 19:48 Chicago O'Hare (ORD) 1 22:39 Knoxville (TYS)
United Airlines UA 1856 Non-stop Airbus A319 (319) 1:51 Operates only on 2026-01-05
Daily 18:15 Chicago O'Hare (ORD) 1 20:57 Knoxville (TYS)
United Airlines UA 2218 Non-stop Airbus A319 (319) 1:42 Effective 2026-02-12 through 2026-03-04
Wed,Sat 07:25 Chicago O'Hare (ORD) 2 10:17 Knoxville (TYS)
United Airlines UA 3607 Non-stop Embraer EMB 175 (E7W) 1:52 Valid until 2026-01-03
Daily 18:20 Chicago O'Hare (ORD) 2 21:05 Knoxville (TYS)
United Airlines UA 4187 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective from 2026-10-25
Mon,Thu,Fri,Sun 14:02 Chicago O'Hare (ORD) 2 16:52 Knoxville (TYS)
United Airlines UA 4498 Non-stop Canadair CRJ 550 (CR5) 1:50 Effective 2026-02-12 through 2026-03-02
Daily 14:04 Chicago O'Hare (ORD) 2 16:49 Knoxville (TYS)
United Airlines UA 4498 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective from 2026-05-21
Daily 14:35 Chicago O'Hare (ORD) 2 17:28 Knoxville (TYS)
United Airlines UA 4498 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-03-29 through 2026-04-29
Daily 14:40 Chicago O'Hare (ORD) 2 17:33 Knoxville (TYS)
United Airlines UA 4498 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-04-30 through 2026-05-20
Daily 14:55 Chicago O'Hare (ORD) 2 17:45 Knoxville (TYS)
United Airlines UA 4498 Non-stop Canadair CRJ 550 (CR5) 1:50 Effective 2026-03-05 through 2026-03-28
Daily 14:07 Chicago O'Hare (ORD) 2 17:00 Knoxville (TYS)
United Airlines UA 4521 Non-stop Canadair CRJ 550 (CR5) 1:53 Valid until 2026-01-05
Daily 10:35 Chicago O'Hare (ORD) 2 13:24 Knoxville (TYS)
United Airlines UA 4536 Non-stop Canadair CRJ 550 (CR5) 1:49 Effective 2026-01-06 through 2026-02-11
Daily 10:35 Chicago O'Hare (ORD) 2 13:20 Knoxville (TYS)
United Airlines UA 4536 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-02-12 through 2026-03-04
Daily 10:35 Chicago O'Hare (ORD) 2 13:18 Knoxville (TYS)
United Airlines UA 4536 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-03-05 through 2026-04-29
Daily 10:35 Chicago O'Hare (ORD) 2 13:19 Knoxville (TYS)
United Airlines UA 4536 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-04-30 through 2026-05-20
Mon,Tue,Thu-Sun 19:48 Chicago O'Hare (ORD) 2 22:39 Knoxville (TYS)
United Airlines UA 4575 Non-stop Canadair CRJ 550 (CR5) 1:51 Valid until 2026-01-04
Daily 19:50 Chicago O'Hare (ORD) 2 22:35 Knoxville (TYS)
United Airlines UA 4575 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-05-21 through 2026-10-24
Daily 20:04 Chicago O'Hare (ORD) 2 22:49 Knoxville (TYS)
United Airlines UA 4575 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective from 2026-10-25
Mon,Thu-Sun 07:42 Chicago O'Hare (ORD) 2 10:32 Knoxville (TYS)
United Airlines UA 4585 Non-stop Canadair CRJ 550 (CR5) 1:50 Effective 2026-01-08 through 2026-02-09
Mon,Tue,Fri,Sun 07:25 Chicago O'Hare (ORD) 2 10:15 Knoxville (TYS)
United Airlines UA 4606 Non-stop Canadair CRJ 550 (CR5) 1:50 Valid until 2026-01-05
Tue 13:55 Chicago O'Hare (ORD) 2 16:48 Knoxville (TYS)
United Airlines UA 5588 Non-stop Embraer EMB 175 (E7W) 1:53 Operates only on 2026-02-03
Mon-Fri,Sun 14:00 Chicago O'Hare (ORD) 2 16:53 Knoxville (TYS)
United Airlines UA 5588 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-01-06 through 2026-02-02
Mon-Fri,Sun 14:00 Chicago O'Hare (ORD) 2 16:53 Knoxville (TYS)
United Airlines UA 5588 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-02-04 through 2026-02-11
Daily 07:15 Chicago O'Hare (ORD) 2 10:08 Knoxville (TYS)
United Airlines UA 5726 Non-stop Embraer EMB 175 (E7W) 1:53 Effective 2026-03-29 through 2026-05-20
Daily 07:20 Chicago O'Hare (ORD) 2 09:59 Knoxville (TYS)
United Airlines UA 5726 Non-stop Canadair CRJ 550 (CR5) 1:39 Effective from 2026-05-21
Mon-Fri,Sun 07:25 Chicago O'Hare (ORD) 2 10:12 Knoxville (TYS)
United Airlines UA 5726 Non-stop Canadair CRJ (CRJ) 1:47 Effective 2026-02-24 through 2026-03-04
Daily 07:35 Chicago O'Hare (ORD) 2 10:19 Knoxville (TYS)
United Airlines UA 5726 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-02-12 through 2026-02-23
Thu-Sat 07:35 Chicago O'Hare (ORD) 2 10:19 Knoxville (TYS)
United Airlines UA 5726 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-02-28 through 2026-03-06
Mon-Fri,Sun 07:35 Chicago O'Hare (ORD) 2 10:19 Knoxville (TYS)
United Airlines UA 5726 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-03-08 through 2026-03-27
Daily 10:35 Chicago O'Hare (ORD) 2 13:18 Knoxville (TYS)
United Airlines UA 5836 Non-stop Embraer EMB 175 (E7W) 1:43 Effective from 2026-05-21




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United Airlines flights from Chicago O'Hare (ORD) to Knoxville (TYS).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1211
18:00
Chicago O'Hare (ORD) 1

20:45
Knoxville (TYS)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1211
18:01
Chicago O'Hare (ORD) 1

20:46
Knoxville (TYS)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1211
18:06
Chicago O'Hare (ORD) 1

20:47
Knoxville (TYS)
Effective 2026-03-05 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:41, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1211
18:07
Chicago O'Hare (ORD) 1

20:48
Knoxville (TYS)
Effective 2026-03-07 through 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:41, non-stop
Boeing 737-700 (73G)
Direct Flights:
United Airlines UA1583
18:10
Chicago O'Hare (ORD) 1

20:52
Knoxville (TYS)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:42, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1583
18:10
Chicago O'Hare (ORD) 1

20:52
Knoxville (TYS)
Effective 2026-01-07 through 2026-01-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1583
18:10
Chicago O'Hare (ORD) 1

20:52
Knoxville (TYS)
Effective 2026-01-16 through 2026-01-21
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:42, non-stop
Airbus A320 (320)
Direct Flights:
United Airlines UA1583
18:10
Chicago O'Hare (ORD) 1

20:52
Knoxville (TYS)
Effective 2026-01-17 through 2026-01-27
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1583
18:10
Chicago O'Hare (ORD) 1

20:52
Knoxville (TYS)
Effective 2026-01-28 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA1856
19:48
Chicago O'Hare (ORD) 1

22:39
Knoxville (TYS)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:51, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA2218
18:15
Chicago O'Hare (ORD) 1

20:57
Knoxville (TYS)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:42, non-stop
Airbus A319 (319)
Direct Flights:
United Airlines UA3607
07:25
Chicago O'Hare (ORD) 2

10:17
Knoxville (TYS)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:52, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4187
18:20
Chicago O'Hare (ORD) 2

21:05
Knoxville (TYS)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4498
14:02
Chicago O'Hare (ORD) 2

16:52
Knoxville (TYS)
Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4498
14:04
Chicago O'Hare (ORD) 2

16:49
Knoxville (TYS)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4498
14:35
Chicago O'Hare (ORD) 2

17:28
Knoxville (TYS)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4498
14:40
Chicago O'Hare (ORD) 2

17:33
Knoxville (TYS)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4498
14:55
Chicago O'Hare (ORD) 2

17:45
Knoxville (TYS)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4521
14:07
Chicago O'Hare (ORD) 2

17:00
Knoxville (TYS)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4536
10:35
Chicago O'Hare (ORD) 2

13:24
Knoxville (TYS)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:49, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4536
10:35
Chicago O'Hare (ORD) 2

13:20
Knoxville (TYS)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4536
10:35
Chicago O'Hare (ORD) 2

13:18
Knoxville (TYS)
Effective 2026-03-05 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:43, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4536
10:35
Chicago O'Hare (ORD) 2

13:19
Knoxville (TYS)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4575
19:48
Chicago O'Hare (ORD) 2

22:39
Knoxville (TYS)
Valid until 2026-01-04
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4575
19:50
Chicago O'Hare (ORD) 2

22:35
Knoxville (TYS)
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4575
20:04
Chicago O'Hare (ORD) 2

22:49
Knoxville (TYS)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4585
07:42
Chicago O'Hare (ORD) 2

10:32
Knoxville (TYS)
Effective 2026-01-08 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4606
07:25
Chicago O'Hare (ORD) 2

10:15
Knoxville (TYS)
Valid until 2026-01-05
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5588
13:55
Chicago O'Hare (ORD) 2

16:48
Knoxville (TYS)
Operates only on 2026-02-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:53, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5588
14:00
Chicago O'Hare (ORD) 2

16:53
Knoxville (TYS)
Effective 2026-01-06 through 2026-02-02
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5588
14:00
Chicago O'Hare (ORD) 2

16:53
Knoxville (TYS)
Effective 2026-02-04 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5726
07:15
Chicago O'Hare (ORD) 2

10:08
Knoxville (TYS)
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5726
07:20
Chicago O'Hare (ORD) 2

09:59
Knoxville (TYS)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5726
07:25
Chicago O'Hare (ORD) 2

10:12
Knoxville (TYS)
Effective 2026-02-24 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:47, non-stop
Canadair CRJ (CRJ)
Direct Flights:
United Airlines UA5726
07:35
Chicago O'Hare (ORD) 2

10:19
Knoxville (TYS)
Effective 2026-02-12 through 2026-02-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5726
07:35
Chicago O'Hare (ORD) 2

10:19
Knoxville (TYS)
Effective 2026-02-28 through 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5726
07:35
Chicago O'Hare (ORD) 2

10:19
Knoxville (TYS)
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5836
10:35
Chicago O'Hare (ORD) 2

13:18
Knoxville (TYS)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:43, non-stop
Embraer EMB 175 (E7W)
  • A domestic route departing from the Chicago O'Hare airport (ORD) and arriving at Knoxville airport (TYS).
  • The flight distance is 475 miles, or 764 km.
  • The timezone of the departure airport is UTC-6 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 1:39 and 1:53.
All ORD-TYS flights
All United Airlines flights
Return (TYS-ORD) flights
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