United Airlines flight UA 4166: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 06:17 Allentown (ABE) 08:00 Chicago O'Hare (ORD) 2
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:43 Valid until 2026-01-05
Daily 06:20 Allentown (ABE) 07:52 Chicago O'Hare (ORD) 2
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:32 Effective 2026-03-05 through 2026-03-28
Daily 06:28 Allentown (ABE) 08:00 Chicago O'Hare (ORD) 2
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:32 Effective 2026-02-12 through 2026-03-04
Daily 06:30 Allentown (ABE) 07:51 Chicago O'Hare (ORD) 2
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:21 Effective from 2026-04-30
Daily 06:44 Allentown (ABE) 08:05 Chicago O'Hare (ORD) 2
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:21 Effective 2026-03-29 through 2026-04-29
Daily 08:14 Bangor (BGR) 10:14 Newark Liberty, New York (EWR) C
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:00 Effective 2026-01-06 through 2026-02-03
Daily 08:14 Bangor (BGR) 10:14 Newark Liberty, New York (EWR) C
UA 4166 Non-stop Canadair CRJ 550 (CR5) 2:00 Effective 2026-02-05 through 2026-02-11
Daily 09:00 Chicago O'Hare (ORD) 2 10:11 Madison (MSN)
UA 4166 Non-stop Canadair CRJ 550 (CR5) 1:11 Effective 2026-04-30 through 2026-05-20
Daily 10:30 Chicago O'Hare (ORD) 2 11:38 Madison (MSN)
UA 4166 Non-stop Canadair CRJ 550 (CR5) 1:08 Effective from 2026-05-21
Wed 11:20 Burlington (BTV) 13:06 Newark Liberty, New York (EWR) C
UA 4166 Non-stop Canadair CRJ 550 (CR5) 1:46 Operates only on 2026-02-04
Non-Direct Flights:
Daily 06:30 Allentown (ABE) 10:11 Madison (MSN)
UA 4166 1-stop Canadair CRJ 550 (CR5) 4:41 Effective 2026-04-30 through 2026-05-20
Daily 06:30 Allentown (ABE) 11:38 Madison (MSN)
UA 4166 1-stop Canadair CRJ 550 (CR5) 6:08 Effective from 2026-05-21
This flight number is listed as serving the following routes:


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United Airlines flight UA 4166: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4166
06:17
Allentown (ABE)

08:00
Chicago O'Hare (ORD) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:43, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
06:20
Allentown (ABE)

07:52
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:32, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
06:28
Allentown (ABE)

08:00
Chicago O'Hare (ORD) 2
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:32, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
06:30
Allentown (ABE)

07:51
Chicago O'Hare (ORD) 2
Effective from 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
06:44
Allentown (ABE)

08:05
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
08:14
Bangor (BGR)

10:14
Newark Liberty, New York (EWR) C
Effective 2026-01-06 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:00, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
08:14
Bangor (BGR)

10:14
Newark Liberty, New York (EWR) C
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:00, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
09:00
Chicago O'Hare (ORD) 2

10:11
Madison (MSN)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
10:30
Chicago O'Hare (ORD) 2

11:38
Madison (MSN)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:08, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4166
11:20
Burlington (BTV)

13:06
Newark Liberty, New York (EWR) C
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:46, non-stop
Canadair CRJ 550 (CR5)
Non-Direct Flights:
United Airlines UA4166
06:30
Allentown (ABE)

10:11
Madison (MSN)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:41, 1-stop
Canadair CRJ 550 (CR5)
Non-Direct Flights:
United Airlines UA4166
06:30
Allentown (ABE)

11:38
Madison (MSN)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:08, 1-stop
Canadair CRJ 550 (CR5)
This flight number is listed as serving the following routes:
  • Allentown (ABE) - Chicago O'Hare (ORD)
  • Allentown (ABE) - Madison (MSN)
  • Bangor (BGR) - Newark Liberty, New York (EWR)
  • Burlington (BTV) - Newark Liberty, New York (EWR)
  • Chicago O'Hare (ORD) - Madison (MSN)
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