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

FLIGHT SCHEDULE
Direct Flights:
Mon-Thu 08:15 Chattanooga (CHA) 09:29 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:14 Effective 2026-01-07 through 2026-02-03
Mon-Thu 08:15 Chattanooga (CHA) 09:29 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:14 Effective 2026-02-05 through 2026-02-11
Fri,Sun 08:30 Chattanooga (CHA) 09:44 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:14 Effective 2026-01-09 through 2026-01-16
Fri,Sun 08:30 Chattanooga (CHA) 09:44 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:14 Effective 2026-01-23 through 2026-02-08
Sat 08:43 Chattanooga (CHA) 09:55 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:12 Effective 2026-01-10 through 2026-01-17
Sat,Sun 08:43 Chattanooga (CHA) 09:55 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:12 Effective 2026-01-18 through 2026-01-24
Sat 08:43 Chattanooga (CHA) 09:55 Chicago O'Hare (ORD) 2 United Airlines UA 3413 Non-stop Embraer EMB 175 (E7W) 2:12 Effective 2026-01-31 through 2026-02-07
Thu 06:30 Chattanooga (CHA) 07:39 Chicago O'Hare (ORD) 2 United Airlines UA 3423 Non-stop Embraer EMB 175 (E7W) 2:09 Operates only on 2026-02-12
Wed 13:00 Chattanooga (CHA) 14:13 Chicago O'Hare (ORD) 2 United Airlines UA 3430 Non-stop Embraer EMB 175 (E7W) 2:13 Operates only on 2026-02-04
Mon-Fri,Sun 17:40 Chattanooga (CHA) 18:54 Chicago O'Hare (ORD) 2 United Airlines UA 3510 Non-stop Embraer EMB 175 (E7W) 2:14 Effective 2026-01-06 through 2026-02-11
Daily 14:01 Chattanooga (CHA) 14:55 Chicago O'Hare (ORD) 2 United Airlines UA 4168 Non-stop Canadair CRJ 550 (CR5) 1:54 Effective from 2026-05-21
Thu 12:15 Chattanooga (CHA) 13:26 Chicago O'Hare (ORD) 2 United Airlines UA 4169 Non-stop Canadair CRJ 550 (CR5) 2:11 Valid until 2026-01-01
Daily 13:00 Chattanooga (CHA) 14:12 Chicago O'Hare (ORD) 2 United Airlines UA 4186 Non-stop Canadair CRJ 550 (CR5) 2:12 Effective 2026-01-06 through 2026-02-03
Daily 13:00 Chattanooga (CHA) 14:12 Chicago O'Hare (ORD) 2 United Airlines UA 4186 Non-stop Canadair CRJ 550 (CR5) 2:12 Effective 2026-02-05 through 2026-02-11
Mon-Wed,Fri-Sun 08:38 Chattanooga (CHA) 09:50 Chicago O'Hare (ORD) 2 United Airlines UA 4392 Non-stop Canadair CRJ 550 (CR5) 2:12 Valid until 2026-01-05
Tue 08:15 Chattanooga (CHA) 09:27 Chicago O'Hare (ORD) 2 United Airlines UA 4393 Non-stop Canadair CRJ 550 (CR5) 2:12 Operates only on 2026-01-06
Daily 10:45 Chattanooga (CHA) 11:43 Chicago O'Hare (ORD) 2 United Airlines UA 4407 Non-stop Canadair CRJ 550 (CR5) 1:58 Effective 2026-04-30 through 2026-05-20
Daily 10:48 Chattanooga (CHA) 11:46 Chicago O'Hare (ORD) 2 United Airlines UA 4407 Non-stop Canadair CRJ 550 (CR5) 1:58 Effective 2026-03-29 through 2026-04-29
Daily 12:10 Chattanooga (CHA) 13:08 Chicago O'Hare (ORD) 2 United Airlines UA 4407 Non-stop Canadair CRJ 550 (CR5) 1:58 Effective from 2026-05-21
Daily 13:15 Chattanooga (CHA) 14:22 Chicago O'Hare (ORD) 2 United Airlines UA 4407 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2026-02-12 through 2026-03-04
Mon,Tue,Thu,Fri,Sun 17:43 Chattanooga (CHA) 18:55 Chicago O'Hare (ORD) 2 United Airlines UA 4419 Non-stop Canadair CRJ 550 (CR5) 2:12 Valid until 2026-01-05
Tue,Wed 10:53 Chattanooga (CHA) 12:00 Chicago O'Hare (ORD) 2 United Airlines UA 4480 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2026-02-17 through 2026-03-04
Daily 07:00 Chattanooga (CHA) 07:53 Chicago O'Hare (ORD) 2 United Airlines UA 4540 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective 2026-03-29 through 2026-04-29
Daily 07:00 Chattanooga (CHA) 07:53 Chicago O'Hare (ORD) 2 United Airlines UA 4540 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective from 2026-05-21
Daily 08:41 Chattanooga (CHA) 09:35 Chicago O'Hare (ORD) 2 United Airlines UA 4571 Non-stop Canadair CRJ 550 (CR5) 1:54 Effective 2026-04-30 through 2026-05-20
Daily 08:45 Chattanooga (CHA) 09:38 Chicago O'Hare (ORD) 2 United Airlines UA 4571 Non-stop Canadair CRJ 550 (CR5) 1:53 Effective from 2026-10-25
Daily 10:53 Chattanooga (CHA) 12:00 Chicago O'Hare (ORD) 2 United Airlines UA 4715 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2026-03-05 through 2026-03-28
Daily 06:30 Chattanooga (CHA) 07:37 Chicago O'Hare (ORD) 2 United Airlines UA 4723 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2026-03-05 through 2026-03-28
Daily 14:01 Chattanooga (CHA) 15:18 Chicago O'Hare (ORD) 2 United Airlines UA 4769 Non-stop Canadair CRJ 550 (CR5) 2:17 Effective 2026-03-05 through 2026-03-28
Mon-Wed,Fri-Sun 12:15 Chattanooga (CHA) 13:26 Chicago O'Hare (ORD) 2 United Airlines UA 4798 Non-stop Canadair CRJ 550 (CR5) 2:11 Valid until 2026-01-05
Mon-Fri,Sun 17:22 Chattanooga (CHA) 18:39 Chicago O'Hare (ORD) 2 United Airlines UA 5269 Non-stop Canadair CRJ 550 (CR5) 2:17 Effective 2026-02-12 through 2026-03-27
Daily 17:30 Chattanooga (CHA) 18:25 Chicago O'Hare (ORD) 2 United Airlines UA 5269 Non-stop Canadair CRJ 550 (CR5) 1:55 Effective 2026-03-29 through 2026-04-29
Daily 17:30 Chattanooga (CHA) 18:49 Chicago O'Hare (ORD) 2 United Airlines UA 5269 Non-stop Canadair CRJ 550 (CR5) 2:19 Effective 2026-04-30 through 2026-05-20
Daily 17:30 Chattanooga (CHA) 18:25 Chicago O'Hare (ORD) 2 United Airlines UA 5269 Non-stop Canadair CRJ 550 (CR5) 1:55 Effective from 2026-05-21
Mon,Thu-Sun 06:30 Chattanooga (CHA) 07:37 Chicago O'Hare (ORD) 2 United Airlines UA 5364 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2026-02-13 through 2026-03-02
Daily 07:00 Chattanooga (CHA) 07:53 Chicago O'Hare (ORD) 2 United Airlines UA 5769 Non-stop Canadair CRJ (CRJ) 1:53 Effective 2026-04-30 through 2026-05-20

A domestic route departing from the Chattanooga airport (CHA) and arriving at Chicago O'Hare airport (ORD).
The flight distance is 501 miles, or 806 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-6 . 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 1:53 and 2:19.

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FLIGHT SCHEDULE

Direct Flights:

United Airlines UA3413

08:15

Chattanooga (CHA)

09:29

Chicago O'Hare (ORD) 2

Effective 2026-01-07 through 2026-02-03

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:14, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:15

Chattanooga (CHA)

09:29

Chicago O'Hare (ORD) 2

Effective 2026-02-05 through 2026-02-11

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:14, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:30

Chattanooga (CHA)

09:44

Chicago O'Hare (ORD) 2

Effective 2026-01-09 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:14, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:30

Chattanooga (CHA)

09:44

Chicago O'Hare (ORD) 2

Effective 2026-01-23 through 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 2:14, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:43

Chattanooga (CHA)

09:55

Chicago O'Hare (ORD) 2

Effective 2026-01-10 through 2026-01-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:12, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:43

Chattanooga (CHA)

09:55

Chicago O'Hare (ORD) 2

Effective 2026-01-18 through 2026-01-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 2:12, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3413

08:43

Chattanooga (CHA)

09:55

Chicago O'Hare (ORD) 2

Effective 2026-01-31 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:12, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3423

06:30

Chattanooga (CHA)

07:39

Chicago O'Hare (ORD) 2

Operates only on 2026-02-12

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:09, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3430

13:00

Chattanooga (CHA)

14:13

Chicago O'Hare (ORD) 2

Operates only on 2026-02-04

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:13, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA3510

17:40

Chattanooga (CHA)

18:54

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 2:14, non-stop
Embraer EMB 175 (E7W)

Direct Flights:

United Airlines UA4168

14:01

Chattanooga (CHA)

14:55

Chicago O'Hare (ORD) 2

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:54, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4169

12:15

Chattanooga (CHA)

13:26

Chicago O'Hare (ORD) 2

Valid until 2026-01-01

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:11, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4186

13:00

Chattanooga (CHA)

14:12

Chicago O'Hare (ORD) 2

Effective 2026-01-06 through 2026-02-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:12, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4186

13:00

Chattanooga (CHA)

14:12

Chicago O'Hare (ORD) 2

Effective 2026-02-05 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:12, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4392

08:38

Chattanooga (CHA)

09:50

Chicago O'Hare (ORD) 2

Valid until 2026-01-05

Mon

Tue

Wed

Thu
-

Fri

Sat

Sun

Duration: 2:12, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4393

08:15

Chattanooga (CHA)

09:27

Chicago O'Hare (ORD) 2

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:12, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4407

10:45

Chattanooga (CHA)

11:43

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:58, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4407

10:48

Chattanooga (CHA)

11:46

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:58, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4407

12:10

Chattanooga (CHA)

13:08

Chicago O'Hare (ORD) 2

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:58, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4407

13:15

Chattanooga (CHA)

14:22

Chicago O'Hare (ORD) 2

Effective 2026-02-12 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4419

17:43

Chattanooga (CHA)

18:55

Chicago O'Hare (ORD) 2

Valid until 2026-01-05

Mon

Tue

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:12, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4480

10:53

Chattanooga (CHA)

12:00

Chicago O'Hare (ORD) 2

Effective 2026-02-17 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4540

07:00

Chattanooga (CHA)

07:53

Chicago O'Hare (ORD) 2

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 UA4540

07:00

Chattanooga (CHA)

07:53

Chicago O'Hare (ORD) 2

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 UA4571

08:41

Chattanooga (CHA)

09:35

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:54, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4571

08:45

Chattanooga (CHA)

09:38

Chicago O'Hare (ORD) 2

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:53, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4715

10:53

Chattanooga (CHA)

12:00

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4723

06:30

Chattanooga (CHA)

07:37

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4769

14:01

Chattanooga (CHA)

15:18

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:17, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA4798

12:15

Chattanooga (CHA)

13:26

Chicago O'Hare (ORD) 2

Valid until 2026-01-05

Mon

Tue

Wed

Thu
-

Fri

Sat

Sun

Duration: 2:11, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5269

17:22

Chattanooga (CHA)

18:39

Chicago O'Hare (ORD) 2

Effective 2026-02-12 through 2026-03-27

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 2:17, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5269

17:30

Chattanooga (CHA)

18:25

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:55, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5269

17:30

Chattanooga (CHA)

18:49

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:19, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5269

17:30

Chattanooga (CHA)

18:25

Chicago O'Hare (ORD) 2

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:55, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5364

06:30

Chattanooga (CHA)

07:37

Chicago O'Hare (ORD) 2

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)

Direct Flights:

United Airlines UA5769

07:00

Chattanooga (CHA)

07:53

Chicago O'Hare (ORD) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 1:53, non-stop
Canadair CRJ (CRJ)

A domestic route departing from the Chattanooga airport (CHA) and arriving at Chicago O'Hare airport (ORD).
The flight distance is 501 miles, or 806 km.
The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-6 . 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 1:53 and 2:19.

All CHA-ORD flights

All United Airlines flights

Return (ORD-CHA) flights

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