United Airlines flight UA 4188: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 07:03 Lexington (LEX) 07:50 Chicago O'Hare (ORD) 2
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:47 Valid until 2025-05-21
Daily 09:00 Chicago O'Hare (ORD) 2 10:10 Moline (MLI)
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:10 Effective 2025-08-19 through 2025-10-25
Daily 10:05 Louisville (SDF) 10:36 Chicago O'Hare (ORD) 2
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:31 Effective from 2026-02-12
Daily 10:35 Louisville (SDF) 11:06 Chicago O'Hare (ORD) 2
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:31 Effective 2026-01-06 through 2026-02-11
Daily 10:55 Louisville (SDF) 11:35 Chicago O'Hare (ORD) 2
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:40 Effective 2025-12-18 through 2026-01-05
Daily 11:10 Louisville (SDF) 11:50 Chicago O'Hare (ORD) 2
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:40 Effective 2025-10-26 through 2025-12-17
Daily 18:10 Chicago O'Hare (ORD) 2 21:17 Greensboro/High Point (GSO)
UA 4188 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective 2025-08-01 through 2025-08-18
Daily 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF)
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-06-26 through 2025-07-03
Daily 22:20 Dulles, Washington (IAD) 23:44 Buffalo (BUF)
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2025-07-05 through 2025-07-31
Daily 22:25 Dulles, Washington (IAD) 23:44 Greensboro/High Point (GSO)
UA 4188 Non-stop Canadair CRJ 550 (CR5) 1:19 Effective 2025-05-22 through 2025-06-25
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This flight number is listed as serving the following routes:


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United Airlines flight UA 4188: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4188
07:03
Lexington (LEX)

07:50
Chicago O'Hare (ORD) 2
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
09:00
Chicago O'Hare (ORD) 2

10:10
Moline (MLI)
Effective 2025-08-19 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:10, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
10:05
Louisville (SDF)

10:36
Chicago O'Hare (ORD) 2
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
10:35
Louisville (SDF)

11:06
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
10:55
Louisville (SDF)

11:35
Chicago O'Hare (ORD) 2
Effective 2025-12-18 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
11:10
Louisville (SDF)

11:50
Chicago O'Hare (ORD) 2
Effective 2025-10-26 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
18:10
Chicago O'Hare (ORD) 2

21:17
Greensboro/High Point (GSO)
Effective 2025-08-01 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
22:20
Dulles, Washington (IAD)

23:44
Buffalo (BUF)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
22:20
Dulles, Washington (IAD)

23:44
Buffalo (BUF)
Effective 2025-07-05 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4188
22:25
Dulles, Washington (IAD)

23:44
Greensboro/High Point (GSO)
Effective 2025-05-22 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:19, non-stop
Canadair CRJ 550 (CR5)
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Greensboro/High Point (GSO)
  • Chicago O'Hare (ORD) - Moline (MLI)
  • Dulles, Washington (IAD) - Buffalo (BUF)
  • Dulles, Washington (IAD) - Greensboro/High Point (GSO)
  • Lexington (LEX) - Chicago O'Hare (ORD)
  • Louisville (SDF) - Chicago O'Hare (ORD)
All United Airlines flights
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