Allegiant Air flight G4 1421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 06:00 Knoxville (TYS) 07:43 St. Pete-Clearwater, Tampa (PIE)
G4 1421 Non-stop Airbus A320 (320) 1:43 Operates only on 2026-03-29
Thu 08:57 Denver (DEN) 13:47 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 2:50 Effective 2026-07-02 through 2026-07-30
Fri 09:55 Newark Liberty, New York (EWR) 11:55 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 2:00 Effective 2026-03-13 through 2026-05-15
Sat 12:05 Knoxville (TYS) 13:48 St. Pete-Clearwater, Tampa (PIE)
G4 1421 Non-stop Airbus A320 (320) 1:43 Operates only on 2026-03-14
Thu 15:42 Washington Dulles (IAD) 17:22 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 1:40 Operates only on 2026-03-19
Thu 15:55 Washington Dulles (IAD) 17:35 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 1:40 Operates only on 2026-03-26
Fri 16:01 Orlando Sanford (SFB) 17:39 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 1:38 Effective 2026-08-07 through 2026-08-14
Sat 19:58 Destin/Fort Walton Beach (VPS) 22:18 Knoxville (TYS)
G4 1421 Non-stop Airbus A320 (320) 1:20 Effective 2026-05-23 through 2026-05-30
This flight number is listed as serving the following routes:


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Allegiant Air flight G4 1421: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Allegiant Air G41421
06:00
Knoxville (TYS)

07:43
St. Pete-Clearwater, Tampa (PIE)
Operates only on 2026-03-29
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
-
Sun
Duration: 1:43, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
08:57
Denver (DEN)

13:47
Knoxville (TYS)
Effective 2026-07-02 through 2026-07-30
Mon
-
Tue
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Wed
-
Thu
Fri
-
Sat
-
Sun
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Duration: 2:50, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
09:55
Newark Liberty, New York (EWR)

11:55
Knoxville (TYS)
Effective 2026-03-13 through 2026-05-15
Mon
-
Tue
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Wed
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Thu
-
Fri
Sat
-
Sun
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Duration: 2:00, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
12:05
Knoxville (TYS)

13:48
St. Pete-Clearwater, Tampa (PIE)
Operates only on 2026-03-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:43, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
15:42
Washington Dulles (IAD)

17:22
Knoxville (TYS)
Operates only on 2026-03-19
Mon
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Tue
-
Wed
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Thu
Fri
-
Sat
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Sun
-
Duration: 1:40, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
15:55
Washington Dulles (IAD)

17:35
Knoxville (TYS)
Operates only on 2026-03-26
Mon
-
Tue
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Wed
-
Thu
Fri
-
Sat
-
Sun
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Duration: 1:40, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
16:01
Orlando Sanford (SFB)

17:39
Knoxville (TYS)
Effective 2026-08-07 through 2026-08-14
Mon
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Tue
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Wed
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Thu
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Fri
Sat
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Sun
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Duration: 1:38, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41421
19:58
Destin/Fort Walton Beach (VPS)

22:18
Knoxville (TYS)
Effective 2026-05-23 through 2026-05-30
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
Sun
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Duration: 1:20, non-stop
Airbus A320 (320)
This flight number is listed as serving the following routes:
  • Denver (DEN) - Knoxville (TYS)
  • Destin/Fort Walton Beach (VPS) - Knoxville (TYS)
  • Knoxville (TYS) - St. Pete-Clearwater, Tampa (PIE)
  • Newark Liberty, New York (EWR) - Knoxville (TYS)
  • Orlando Sanford (SFB) - Knoxville (TYS)
  • Washington Dulles (IAD) - Knoxville (TYS)
All Allegiant Air flights
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