United Airlines
flight
UA 4021:
Multiple routes
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FLIGHT SCHEDULE
Direct Flights:
United Airlines UA4021
Valid until 2026-01-05
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4021
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:43, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4021
Effective 2026-02-14 through 2026-02-28
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Duration: 1:20, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4021
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:13, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4021
Effective 2026-02-15 through 2026-03-02
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Duration: 1:20, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA4021
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:48, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
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Parallax here -
This flight number is listed as serving the following routes:
- Dallas Fort Worth (DFW) - Houston George Bush (IAH)
- Key West (EYW) - Washington Dulles (IAD)
- Louisville (SDF) - Washington Dulles (IAD)
- McAllen/Mission (MFE) - Houston George Bush (IAH)