United Airlines flight UA 4548: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 12:34 Appleton (ATW) 14:04 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:30 Effective 2026-02-17 through 2026-03-04
Sun 17:15 Washington Dulles (IAD) 18:58 Cincinnati (CVG)
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:43 Effective 2026-03-08 through 2026-03-22
Daily 17:39 Knoxville (TYS) 18:46 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 2:07 Effective from 2026-05-21
Daily 17:50 Knoxville (TYS) 18:52 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 2:02 Effective 2026-04-30 through 2026-05-20
Daily 18:20 Grand Rapids (GRR) 18:44 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2026-01-06 through 2026-02-03
Mon,Tue,Thu-Sun 18:20 Grand Rapids (GRR) 18:44 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:24 Effective 2026-02-05 through 2026-02-10
Daily 19:00 Knoxville (TYS) 20:02 Chicago O'Hare (ORD) 2
UA 4548 Non-stop Canadair CRJ 550 (CR5) 2:02 Effective 2026-03-29 through 2026-04-29
Mon 19:58 Chicago O'Hare (ORD) 2 21:21 Moline (MLI)
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:23 Operates only on 2026-01-05
Daily 22:13 Washington Dulles (IAD) 23:59 Portland (PWM)
UA 4548 Non-stop Canadair CRJ 550 (CR5) 1:46 Valid until 2026-01-04
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This flight number is listed as serving the following routes:


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United Airlines flight UA 4548: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4548
12:34
Appleton (ATW)

14:04
Chicago O'Hare (ORD) 2
Effective 2026-02-17 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
17:15
Washington Dulles (IAD)

18:58
Cincinnati (CVG)
Effective 2026-03-08 through 2026-03-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:43, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
17:39
Knoxville (TYS)

18:46
Chicago O'Hare (ORD) 2
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:07, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
17:50
Knoxville (TYS)

18:52
Chicago O'Hare (ORD) 2
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:02, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
18:20
Grand Rapids (GRR)

18:44
Chicago O'Hare (ORD) 2
Effective 2026-01-06 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
18:20
Grand Rapids (GRR)

18:44
Chicago O'Hare (ORD) 2
Effective 2026-02-05 through 2026-02-10
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:24, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
19:00
Knoxville (TYS)

20:02
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:02, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
19:58
Chicago O'Hare (ORD) 2

21:21
Moline (MLI)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:23, non-stop
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA4548
22:13
Washington Dulles (IAD)

23:59
Portland (PWM)
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Canadair CRJ 550 (CR5)
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This flight number is listed as serving the following routes:
  • Appleton (ATW) - Chicago O'Hare (ORD)
  • Chicago O'Hare (ORD) - Moline (MLI)
  • Grand Rapids (GRR) - Chicago O'Hare (ORD)
  • Knoxville (TYS) - Chicago O'Hare (ORD)
  • Washington Dulles (IAD) - Cincinnati (CVG)
  • Washington Dulles (IAD) - Portland (PWM)
All United Airlines flights
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