United Airlines flight UA 4451: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Tue,Thu-Sun 06:00 Norfolk (ORF) 07:04 Dulles, Washington (IAD)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:04 Effective 2025-05-22 through 2025-05-27
Fri,Sat 06:00 Norfolk (ORF) 07:04 Dulles, Washington (IAD)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:04 Effective 2025-05-30 through 2025-05-31
Wed,Thu 06:15 Buffalo (BUF) 07:29 Dulles, Washington (IAD)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:14 Effective 2025-05-28 through 2025-05-29
Sat,Sun 07:35 Chicago O'Hare (ORD) 2 10:05 Detroit (DTW) E
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:30 Effective 2025-06-28 through 2025-08-17
Mon-Sat 10:59 Newark Liberty, New York (EWR) C 12:47 Greensboro/High Point (GSO)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:48 Effective 2025-08-19 through 2025-09-27
Daily 10:59 Newark Liberty, New York (EWR) C 12:47 Greensboro/High Point (GSO)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:48 Effective 2025-09-28 through 2025-10-25
Tue,Wed 11:00 State College (SCE) 12:00 Chicago O'Hare (ORD) 2
UA 4451 Non-stop Canadair CRJ 550 (CR5) 2:00 Effective 2025-06-03 through 2025-06-25
Wed 20:20 Chicago O'Hare (ORD) 2 23:14 Chattanooga (CHA)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:54 Operates only on 2025-05-21
Daily 22:05 Dulles, Washington (IAD) 23:43 Ottawa (YOW)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:38 Effective 2025-10-26 through 2025-12-17
Daily 22:05 Dulles, Washington (IAD) 23:43 Ottawa (YOW)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:38 Effective from 2026-02-12
Daily 22:14 Dulles, Washington (IAD) 23:53 Ottawa (YOW)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:39 Valid until 2025-05-20
Mon,Thu-Sun 22:47 Dulles, Washington (IAD) 23:58 Norfolk (ORF)
UA 4451 Non-stop Canadair CRJ 550 (CR5) 1:11 Effective 2025-06-01 through 2025-06-23
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This flight number is listed as serving the following routes:


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United Airlines flight UA 4451: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4451
06:00
Norfolk (ORF)

07:04
Dulles, Washington (IAD)
Effective 2025-05-22 through 2025-05-27
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:04, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
06:00
Norfolk (ORF)

07:04
Dulles, Washington (IAD)
Effective 2025-05-30 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 1:04, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
06:15
Buffalo (BUF)

07:29
Dulles, Washington (IAD)
Effective 2025-05-28 through 2025-05-29
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:14, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
07:35
Chicago O'Hare (ORD) 2

10:05
Detroit (DTW) E
Effective 2025-06-28 through 2025-08-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 1:30, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
10:59
Newark Liberty, New York (EWR) C

12:47
Greensboro/High Point (GSO)
Effective 2025-08-19 through 2025-09-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 1:48, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
10:59
Newark Liberty, New York (EWR) C

12:47
Greensboro/High Point (GSO)
Effective 2025-09-28 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:48, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
11:00
State College (SCE)

12:00
Chicago O'Hare (ORD) 2
Effective 2025-06-03 through 2025-06-25
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
20:20
Chicago O'Hare (ORD) 2

23:14
Chattanooga (CHA)
Operates only on 2025-05-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:54, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
22:05
Dulles, Washington (IAD)

23:43
Ottawa (YOW)
Effective 2025-10-26 through 2025-12-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:38, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
22:05
Dulles, Washington (IAD)

23:43
Ottawa (YOW)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:38, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
22:14
Dulles, Washington (IAD)

23:53
Ottawa (YOW)
Valid until 2025-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA4451
22:47
Dulles, Washington (IAD)

23:58
Norfolk (ORF)
Effective 2025-06-01 through 2025-06-23
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:11, non-stop
Canadair CRJ 550 (CR5)
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This flight number is listed as serving the following routes:
  • Buffalo (BUF) - Dulles, Washington (IAD)
  • Chicago O'Hare (ORD) - Chattanooga (CHA)
  • Chicago O'Hare (ORD) - Detroit (DTW)
  • Dulles, Washington (IAD) - Norfolk (ORF)
  • Dulles, Washington (IAD) - Ottawa (YOW)
  • Newark Liberty, New York (EWR) - Greensboro/High Point (GSO)
  • State College (SCE) - Chicago O'Hare (ORD)
All United Airlines flights
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