United Airlines flight UA 5251: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 08:40 Aspen (ASE) 09:48 Denver (DEN)
UA 5251 Non-stop Embraer EMB 175 (E7W) 1:08 Effective 2025-08-19 through 2025-09-24
Daily 08:45 Aspen (ASE) 09:58 Denver (DEN)
UA 5251 Non-stop Embraer EMB 175 (E7W) 1:13 Effective 2025-09-25 through 2025-10-25
Daily 13:46 Denver (DEN) 16:14 Kalispell (FCA)
UA 5251 Non-stop Embraer EMB 175 (E7W) 2:28 Effective 2025-05-23 through 2025-06-25
Thu 13:54 Denver (DEN) 16:22 Kalispell (FCA)
UA 5251 Non-stop Embraer EMB 175 (E7W) 2:28 Operates only on 2025-05-22
Daily 14:10 Denver (DEN) 15:53 Salt Lake City (SLC)
UA 5251 Non-stop Embraer EMB 175 (E7W) 1:43 Valid until 2025-05-21
Daily 19:51 Chicago O'Hare (ORD) 2 21:47 Fayetteville/Springdale (XNA)
UA 5251 Non-stop Embraer EMB 175 (E7W) 1:56 Effective from 2025-10-26
Daily 21:08 Chicago O'Hare (ORD) 2 23:44 Akron/Canton (CAK)
UA 5251 Non-stop Canadair CRJ 550 (CR5) 1:36 Effective 2025-06-26 through 2025-07-03
Daily 21:08 Chicago O'Hare (ORD) 2 23:44 Akron/Canton (CAK)
UA 5251 Non-stop Canadair CRJ 550 (CR5) 1:36 Effective 2025-07-05 through 2025-07-31
Daily 21:10 Chicago O'Hare (ORD) 2 23:46 Akron/Canton (CAK)
UA 5251 Non-stop Canadair CRJ 550 (CR5) 1:36 Effective 2025-08-01 through 2025-08-18
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This flight number is listed as serving the following routes:


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United Airlines flight UA 5251: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA5251
08:40
Aspen (ASE)

09:48
Denver (DEN)
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:08, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
08:45
Aspen (ASE)

09:58
Denver (DEN)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:13, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
13:46
Denver (DEN)

16:14
Kalispell (FCA)
Effective 2025-05-23 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:28, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
13:54
Denver (DEN)

16:22
Kalispell (FCA)
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:28, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
14:10
Denver (DEN)

15:53
Salt Lake City (SLC)
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:43, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
19:51
Chicago O'Hare (ORD) 2

21:47
Fayetteville/Springdale (XNA)
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Embraer EMB 175 (E7W)
United Airlines UA5251
21:08
Chicago O'Hare (ORD) 2

23:44
Akron/Canton (CAK)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:36, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA5251
21:08
Chicago O'Hare (ORD) 2

23:44
Akron/Canton (CAK)
Effective 2025-07-05 through 2025-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:36, non-stop
Canadair CRJ 550 (CR5)
United Airlines UA5251
21:10
Chicago O'Hare (ORD) 2

23:46
Akron/Canton (CAK)
Effective 2025-08-01 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:36, non-stop
Canadair CRJ 550 (CR5)
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This flight number is listed as serving the following routes:
  • Aspen (ASE) - Denver (DEN)
  • Chicago O'Hare (ORD) - Akron/Canton (CAK)
  • Chicago O'Hare (ORD) - Fayetteville/Springdale (XNA)
  • Denver (DEN) - Kalispell (FCA)
  • Denver (DEN) - Salt Lake City (SLC)
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