United Airlines flight UA 4603: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 10:33 Philadelphia (PHL) D 11:43 Washington Dulles (IAD)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:10 Effective 2026-04-30 through 2026-05-20
Mon-Sat 10:35 Philadelphia (PHL) D 11:48 Washington Dulles (IAD)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:13 Effective 2026-03-05 through 2026-03-28
Daily 10:35 Philadelphia (PHL) D 11:45 Washington Dulles (IAD)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:10 Effective 2026-03-29 through 2026-04-29
Daily 12:48 Washington Dulles (IAD) 14:32 Portland (PWM)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:44 Effective 2026-03-05 through 2026-03-28
Daily 12:48 Washington Dulles (IAD) 14:34 Portland (PWM)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:46 Effective 2026-03-29 through 2026-04-29
Mon,Thu,Fri,Sun 14:15 Chicago O'Hare (ORD) 2 16:48 Lexington (LEX)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:33 Effective 2026-02-13 through 2026-03-02
Daily 15:55 Madison (MSN) 17:02 Chicago O'Hare (ORD) 2
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:07 Effective from 2026-05-21
Daily 17:15 Washington Dulles (IAD) 18:45 Syracuse (SYR)
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:30 Valid until 2026-01-05
Mon,Thu,Fri,Sun 17:25 Madison (MSN) 18:45 Chicago O'Hare (ORD) 2
UA 4603 Non-stop Canadair CRJ 550 (CR5) 1:20 Effective 2026-01-08 through 2026-02-09
Non-Direct Flights:
Mon-Sat 10:35 Philadelphia (PHL) D 14:32 Portland (PWM)
UA 4603 1-stop Canadair CRJ 550 (CR5) 3:57 Effective 2026-03-05 through 2026-03-28
Daily 10:35 Philadelphia (PHL) D 14:34 Portland (PWM)
UA 4603 1-stop Canadair CRJ 550 (CR5) 3:59 Effective 2026-03-29 through 2026-04-29
This flight number is listed as serving the following routes:


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United Airlines flight UA 4603: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4603
10:33
Philadelphia (PHL) D

11:43
Washington Dulles (IAD)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:10, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
10:35
Philadelphia (PHL) D

11:48
Washington Dulles (IAD)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:13, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
10:35
Philadelphia (PHL) D

11:45
Washington Dulles (IAD)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:10, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
12:48
Washington Dulles (IAD)

14:32
Portland (PWM)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
12:48
Washington Dulles (IAD)

14:34
Portland (PWM)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
14:15
Chicago O'Hare (ORD) 2

16:48
Lexington (LEX)
Effective 2026-02-13 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:33, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
15:55
Madison (MSN)

17:02
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:07, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
17:15
Washington Dulles (IAD)

18:45
Syracuse (SYR)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:30, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4603
17:25
Madison (MSN)

18:45
Chicago O'Hare (ORD) 2
Effective 2026-01-08 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:20, non-stop
Canadair CRJ 550 (CR5)
Non-Direct Flights:
United Airlines UA4603
10:35
Philadelphia (PHL) D

14:32
Portland (PWM)
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 3:57, 1-stop
Canadair CRJ 550 (CR5)
Non-Direct Flights:
United Airlines UA4603
10:35
Philadelphia (PHL) D

14:34
Portland (PWM)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:59, 1-stop
Canadair CRJ 550 (CR5)
This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Lexington (LEX)
  • Madison (MSN) - Chicago O'Hare (ORD)
  • Philadelphia (PHL) - Portland (PWM)
  • Philadelphia (PHL) - Washington Dulles (IAD)
  • Washington Dulles (IAD) - Portland (PWM)
  • Washington Dulles (IAD) - Syracuse (SYR)
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