United Airlines flight UA 4304: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Mon-Fri,Sun 12:35 Washington Dulles (IAD) 14:19 Greenville/Spartanburg (GSP)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:44 Effective 2026-01-06 through 2026-02-11
Sat 12:45 Washington Dulles (IAD) 14:17 John Glenn Columbus (CMH)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:32 Effective 2026-02-14 through 2026-02-28
Sat 14:58 Cincinnati (CVG) 16:37 Washington Dulles (IAD)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:39 Effective 2026-01-10 through 2026-02-07
Wed 16:54 Birmingham (BHM) 19:10 Houston George Bush (IAH) B
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 2:16 Effective 2026-03-11 through 2026-03-25
Mon,Tue,Thu-Sun 22:10 Washington Dulles (IAD) 23:59 Knoxville (TYS)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:49 Valid until 2026-01-05
Daily 22:10 Washington Dulles (IAD) 23:37 Knoxville (TYS)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:27 Effective from 2026-10-25
Daily 22:19 Washington Dulles (IAD) 23:59 Knoxville (TYS)
UA 4304 Non-stop Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ) 1:40 Effective 2026-05-21 through 2026-09-23
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This flight number is listed as serving the following routes:


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United Airlines flight UA 4304: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4304
12:35
Washington Dulles (IAD)

14:19
Greenville/Spartanburg (GSP)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:44, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
12:45
Washington Dulles (IAD)

14:17
John Glenn Columbus (CMH)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:32, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
14:58
Cincinnati (CVG)

16:37
Washington Dulles (IAD)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:39, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
16:54
Birmingham (BHM)

19:10
Houston George Bush (IAH) B
Effective 2026-03-11 through 2026-03-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:16, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
22:10
Washington Dulles (IAD)

23:59
Knoxville (TYS)
Valid until 2026-01-05
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:49, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
22:10
Washington Dulles (IAD)

23:37
Knoxville (TYS)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:27, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
Direct Flights:
United Airlines UA4304
22:19
Washington Dulles (IAD)

23:59
Knoxville (TYS)
Effective 2026-05-21 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:40, non-stop
Embraer ERJ 135 / ERJ 140 / ERJ 145 (ERJ)
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This flight number is listed as serving the following routes:
  • Birmingham (BHM) - Houston George Bush (IAH)
  • Cincinnati (CVG) - Washington Dulles (IAD)
  • Washington Dulles (IAD) - Greenville/Spartanburg (GSP)
  • Washington Dulles (IAD) - John Glenn Columbus (CMH)
  • Washington Dulles (IAD) - Knoxville (TYS)
All United Airlines flights
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