United Airlines flight UA 3668: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 08:15 Washington Dulles (IAD) 09:55 Cincinnati (CVG)
UA 3668 Non-stop Embraer EMB 175 (E7W) 1:40 Effective from 2026-05-21
Mon-Wed,Fri-Sun 08:53 Chicago O'Hare (ORD) 2 11:13 Indianapolis (IND)
UA 3668 Non-stop Embraer EMB 175 (E7W) 1:20 Valid until 2026-01-05
Daily 09:00 Chicago O'Hare (ORD) 2 11:21 Indianapolis (IND)
UA 3668 Non-stop Embraer EMB 175 (E7W) 1:21 Effective 2026-03-05 through 2026-03-28
Thu 09:05 Chicago O'Hare (ORD) 2 11:26 Indianapolis (IND)
UA 3668 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Operates only on 2026-02-12
Daily 09:05 Chicago O'Hare (ORD) 2 11:26 Indianapolis (IND)
UA 3668 Non-stop Embraer EMB 175 (E7W) 1:21 Effective 2026-02-13 through 2026-03-04
Mon-Fri,Sun 14:56 Madison (MSN) 16:17 Chicago O'Hare (ORD) 2
UA 3668 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Effective 2026-01-06 through 2026-02-03
Mon-Fri,Sun 14:56 Madison (MSN) 16:17 Chicago O'Hare (ORD) 2
UA 3668 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Effective 2026-02-05 through 2026-02-11
Sat 15:49 Madison (MSN) 17:10 Chicago O'Hare (ORD) 2
UA 3668 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:21 Effective 2026-01-10 through 2026-02-07
Daily 17:04 Richmond (RIC) 18:35 Chicago O'Hare (ORD) 2
UA 3668 Non-stop Embraer EMB 175 (E7W) 2:31 Effective 2026-04-30 through 2026-05-20
Daily 17:05 Richmond (RIC) 18:36 Chicago O'Hare (ORD) 2
UA 3668 Non-stop Embraer EMB 175 (E7W) 2:31 Effective 2026-03-29 through 2026-04-29
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This flight number is listed as serving the following routes:


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United Airlines flight UA 3668: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA3668
08:15
Washington Dulles (IAD)

09:55
Cincinnati (CVG)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3668
08:53
Chicago O'Hare (ORD) 2

11:13
Indianapolis (IND)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3668
09:00
Chicago O'Hare (ORD) 2

11:21
Indianapolis (IND)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3668
09:05
Chicago O'Hare (ORD) 2

11:26
Indianapolis (IND)
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3668
09:05
Chicago O'Hare (ORD) 2

11:26
Indianapolis (IND)
Effective 2026-02-13 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:21, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3668
14:56
Madison (MSN)

16:17
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3668
14:56
Madison (MSN)

16:17
Chicago O'Hare (ORD) 2
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3668
15:49
Madison (MSN)

17:10
Chicago O'Hare (ORD) 2
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:21, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
United Airlines UA3668
17:04
Richmond (RIC)

18:35
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA3668
17:05
Richmond (RIC)

18:36
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Embraer EMB 175 (E7W)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Indianapolis (IND)
  • Madison (MSN) - Chicago O'Hare (ORD)
  • Richmond (RIC) - Chicago O'Hare (ORD)
  • Washington Dulles (IAD) - Cincinnati (CVG)
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