United Airlines flights from Chicago O'Hare (ORD) to Chattanooga (CHA).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon-Thu,Sat,Sun 17:50 Chicago O'Hare (ORD) 2 20:44 Chattanooga (CHA)
United Airlines UA 3489 Non-stop Embraer EMB 175 (E7W) 1:54 Effective 2026-01-06 through 2026-01-15
Fri 17:50 Chicago O'Hare (ORD) 2 20:43 Chattanooga (CHA)
United Airlines UA 3489 Non-stop Embraer EMB 175 (E7W) 1:53 Effective 2026-01-09 through 2026-01-16
Fri,Sat 17:50 Chicago O'Hare (ORD) 2 20:43 Chattanooga (CHA)
United Airlines UA 3489 Non-stop Embraer EMB 175 (E7W) 1:53 Effective 2026-01-17 through 2026-01-23
Mon-Thu,Sat,Sun 17:50 Chicago O'Hare (ORD) 2 20:44 Chattanooga (CHA)
United Airlines UA 3489 Non-stop Embraer EMB 175 (E7W) 1:54 Effective 2026-01-18 through 2026-02-11
Fri 17:50 Chicago O'Hare (ORD) 2 20:43 Chattanooga (CHA)
United Airlines UA 3489 Non-stop Embraer EMB 175 (E7W) 1:53 Effective 2026-01-30 through 2026-02-06
Mon-Fri,Sun 14:00 Chicago O'Hare (ORD) 2 16:54 Chattanooga (CHA)
United Airlines UA 3585 Non-stop Embraer EMB 175 (E7W) 1:54 Effective 2026-01-06 through 2026-02-11
Daily 08:45 Chicago O'Hare (ORD) 2 11:44 Chattanooga (CHA)
United Airlines UA 4170 Non-stop Canadair CRJ 550 (CR5) 1:59 Effective 2026-01-06 through 2026-02-03
Daily 08:45 Chicago O'Hare (ORD) 2 11:44 Chattanooga (CHA)
United Airlines UA 4170 Non-stop Canadair CRJ 550 (CR5) 1:59 Effective 2026-02-05 through 2026-02-11
Daily 10:35 Chicago O'Hare (ORD) 2 13:28 Chattanooga (CHA)
United Airlines UA 4170 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective from 2026-05-21
Mon-Fri,Sun 14:17 Chicago O'Hare (ORD) 2 17:08 Chattanooga (CHA)
United Airlines UA 4425 Non-stop Canadair CRJ 550 (CR5) 1:51 Valid until 2026-01-05
Daily 07:15 Chicago O'Hare (ORD) 2 10:00 Chattanooga (CHA)
United Airlines UA 4504 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-04-30 through 2026-05-20
Daily 07:21 Chicago O'Hare (ORD) 2 10:06 Chattanooga (CHA)
United Airlines UA 4504 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-03-29 through 2026-04-29
Daily 08:50 Chicago O'Hare (ORD) 2 11:35 Chattanooga (CHA)
United Airlines UA 4504 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective from 2026-05-21
Daily 09:25 Chicago O'Hare (ORD) 2 12:16 Chattanooga (CHA)
United Airlines UA 4504 Non-stop Canadair CRJ 550 (CR5) 1:51 Effective 2026-02-12 through 2026-03-04
Mon,Tue,Thu-Sun 17:59 Chicago O'Hare (ORD) 2 20:51 Chattanooga (CHA)
United Airlines UA 4507 Non-stop Canadair CRJ 550 (CR5) 1:52 Valid until 2026-01-05
Daily 18:20 Chicago O'Hare (ORD) 2 21:07 Chattanooga (CHA)
United Airlines UA 4507 Non-stop Canadair CRJ 550 (CR5) 1:47 Effective 2026-03-29 through 2026-04-29
Daily 18:20 Chicago O'Hare (ORD) 2 21:07 Chattanooga (CHA)
United Airlines UA 4507 Non-stop Canadair CRJ 550 (CR5) 1:47 Effective from 2026-05-21
Daily 20:00 Chicago O'Hare (ORD) 2 22:47 Chattanooga (CHA)
United Airlines UA 4514 Non-stop Canadair CRJ 550 (CR5) 1:47 Effective from 2026-10-25
Daily 21:25 Chicago O'Hare (ORD) 2 00:18 Chattanooga (CHA)
United Airlines UA 4514 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-04-30 through 2026-05-20
The flight arrives 1 day after departure.
Mon,Tue 18:05 Chicago O'Hare (ORD) 2 20:50 Chattanooga (CHA)
United Airlines UA 4538 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-02-16 through 2026-03-03
Wed-Fri,Sun 18:05 Chicago O'Hare (ORD) 2 20:50 Chattanooga (CHA)
United Airlines UA 5383 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-02-12 through 2026-03-04
Daily 07:25 Chicago O'Hare (ORD) 2 10:12 Chattanooga (CHA)
United Airlines UA 5435 Non-stop Canadair CRJ 550 (CR5) 1:47 Effective 2026-03-05 through 2026-03-28
Daily 10:35 Chicago O'Hare (ORD) 2 13:26 Chattanooga (CHA)
United Airlines UA 5487 Non-stop Canadair CRJ 550 (CR5) 1:51 Effective 2026-03-05 through 2026-03-28
Daily 13:55 Chicago O'Hare (ORD) 2 16:47 Chattanooga (CHA)
United Airlines UA 5582 Non-stop Canadair CRJ 550 (CR5) 1:52 Effective 2026-02-12 through 2026-03-06
Mon-Fri,Sun 13:55 Chicago O'Hare (ORD) 2 16:47 Chattanooga (CHA)
United Airlines UA 5582 Non-stop Canadair CRJ 550 (CR5) 1:52 Effective 2026-03-08 through 2026-03-27
Daily 14:05 Chicago O'Hare (ORD) 2 16:55 Chattanooga (CHA)
United Airlines UA 5582 Non-stop Canadair CRJ 550 (CR5) 1:50 Effective from 2026-03-29
Daily 17:45 Chicago O'Hare (ORD) 2 20:30 Chattanooga (CHA)
United Airlines UA 5739 Non-stop Canadair CRJ 550 (CR5) 1:45 Effective 2026-03-05 through 2026-03-28
Mon-Wed,Fri-Sun 08:45 Chicago O'Hare (ORD) 2 11:40 Chattanooga (CHA)
United Airlines UA 5764 Non-stop Canadair CRJ 550 (CR5) 1:55 Valid until 2026-01-05
Daily 18:20 Chicago O'Hare (ORD) 2 21:07 Chattanooga (CHA)
United Airlines UA 5889 Non-stop Canadair CRJ (CRJ) 1:47 Effective 2026-04-30 through 2026-05-20




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United Airlines flights from Chicago O'Hare (ORD) to Chattanooga (CHA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA3489
17:50
Chicago O'Hare (ORD) 2

20:44
Chattanooga (CHA)
Effective 2026-01-06 through 2026-01-15
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 1:54, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3489
17:50
Chicago O'Hare (ORD) 2

20:43
Chattanooga (CHA)
Effective 2026-01-09 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:53, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3489
17:50
Chicago O'Hare (ORD) 2

20:43
Chattanooga (CHA)
Effective 2026-01-17 through 2026-01-23
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 1:53, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3489
17:50
Chicago O'Hare (ORD) 2

20:44
Chattanooga (CHA)
Effective 2026-01-18 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 1:54, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3489
17:50
Chicago O'Hare (ORD) 2

20:43
Chattanooga (CHA)
Effective 2026-01-30 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:53, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3585
14:00
Chicago O'Hare (ORD) 2

16:54
Chattanooga (CHA)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:54, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4170
08:45
Chicago O'Hare (ORD) 2

11:44
Chattanooga (CHA)
Effective 2026-01-06 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:59, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4170
08:45
Chicago O'Hare (ORD) 2

11:44
Chattanooga (CHA)
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:59, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4170
10:35
Chicago O'Hare (ORD) 2

13:28
Chattanooga (CHA)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4425
14:17
Chicago O'Hare (ORD) 2

17:08
Chattanooga (CHA)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:51, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4504
07:15
Chicago O'Hare (ORD) 2

10:00
Chattanooga (CHA)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4504
07:21
Chicago O'Hare (ORD) 2

10:06
Chattanooga (CHA)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4504
08:50
Chicago O'Hare (ORD) 2

11:35
Chattanooga (CHA)
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 UA4504
09:25
Chicago O'Hare (ORD) 2

12:16
Chattanooga (CHA)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4507
17:59
Chicago O'Hare (ORD) 2

20:51
Chattanooga (CHA)
Valid until 2026-01-05
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:52, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4507
18:20
Chicago O'Hare (ORD) 2

21:07
Chattanooga (CHA)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4507
18:20
Chicago O'Hare (ORD) 2

21:07
Chattanooga (CHA)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4514
20:00
Chicago O'Hare (ORD) 2

22:47
Chattanooga (CHA)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4514
21:25
Chicago O'Hare (ORD) 2

00:18(+1)
Chattanooga (CHA)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA4538
18:05
Chicago O'Hare (ORD) 2

20:50
Chattanooga (CHA)
Effective 2026-02-16 through 2026-03-03
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5383
18:05
Chicago O'Hare (ORD) 2

20:50
Chattanooga (CHA)
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 UA5435
07:25
Chicago O'Hare (ORD) 2

10:12
Chattanooga (CHA)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5487
10:35
Chicago O'Hare (ORD) 2

13:26
Chattanooga (CHA)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5582
13:55
Chicago O'Hare (ORD) 2

16:47
Chattanooga (CHA)
Effective 2026-02-12 through 2026-03-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:52, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5582
13:55
Chicago O'Hare (ORD) 2

16:47
Chattanooga (CHA)
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:52, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5582
14:05
Chicago O'Hare (ORD) 2

16:55
Chattanooga (CHA)
Effective from 2026-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:50, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5739
17:45
Chicago O'Hare (ORD) 2

20:30
Chattanooga (CHA)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:45, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5764
08:45
Chicago O'Hare (ORD) 2

11:40
Chattanooga (CHA)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 1:55, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5889
18:20
Chicago O'Hare (ORD) 2

21:07
Chattanooga (CHA)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ (CRJ)
  • A domestic route departing from the Chicago O'Hare airport (ORD) and arriving at Chattanooga airport (CHA).
  • The flight distance is 501 miles, or 806 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 1:45 and 1:59.
All ORD-CHA flights
All United Airlines flights
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