Allegiant Air flight G4 1423: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Fri 08:38 Austin (AUS) 11:59 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 2:21 Effective 2026-06-05 through 2026-06-29
Mon 08:53 St. Pete-Clearwater, Tampa (PIE) 10:35 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:42 Effective 2026-03-23 through 2026-03-30
Sun 09:56 Fort Lauderdale (FLL) 1 12:04 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 2:08 Operates only on 2026-02-15
Sun 12:51 Fort Lauderdale (FLL) 1 14:56 Knoxville (TYS)
G4 1423 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Effective 2026-06-07 through 2026-06-28
Sat 15:41 Destin/Fort Walton Beach (VPS) 18:03 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:22 Effective 2026-08-08 through 2026-08-15
Sun 15:58 Orlando Sanford (SFB) 17:36 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:38 Effective 2026-08-09 through 2026-08-16
Mon 17:01 Knoxville (TYS) 19:00 Fort Lauderdale (FLL) 1
G4 1423 Non-stop Airbus A320 (320) 1:59 Operates only on 2026-04-06
Sun 19:45 St. Pete-Clearwater, Tampa (PIE) 21:24 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:39 Operates only on 2026-01-04
Sun 20:01 Jacksonville (JAX) 21:27 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:26 Effective 2026-03-08 through 2026-03-15
Mon 20:12 St. Pete-Clearwater, Tampa (PIE) 21:54 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:42 Operates only on 2026-03-16
Mon 20:28 St. Pete-Clearwater, Tampa (PIE) 22:07 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:39 Valid until 2026-01-05
Mon 21:49 St. Pete-Clearwater, Tampa (PIE) 23:31 Knoxville (TYS)
G4 1423 Non-stop Airbus A320 (320) 1:42 Effective 2026-08-10 through 2026-08-17
This flight number is listed as serving the following routes:


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Allegiant Air flight G4 1423: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Allegiant Air G41423
08:38
Austin (AUS)

11:59
Knoxville (TYS)
Effective 2026-06-05 through 2026-06-29
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:21, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
08:53
St. Pete-Clearwater, Tampa (PIE)

10:35
Knoxville (TYS)
Effective 2026-03-23 through 2026-03-30
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:42, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
09:56
Fort Lauderdale (FLL) 1

12:04
Knoxville (TYS)
Operates only on 2026-02-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:08, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
12:51
Fort Lauderdale (FLL) 1

14:56
Knoxville (TYS)
Effective 2026-06-07 through 2026-06-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Allegiant Air G41423
15:41
Destin/Fort Walton Beach (VPS)

18:03
Knoxville (TYS)
Effective 2026-08-08 through 2026-08-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:22, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
15:58
Orlando Sanford (SFB)

17:36
Knoxville (TYS)
Effective 2026-08-09 through 2026-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:38, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
17:01
Knoxville (TYS)

19:00
Fort Lauderdale (FLL) 1
Operates only on 2026-04-06
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:59, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
19:45
St. Pete-Clearwater, Tampa (PIE)

21:24
Knoxville (TYS)
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:39, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
20:01
Jacksonville (JAX)

21:27
Knoxville (TYS)
Effective 2026-03-08 through 2026-03-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:26, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
20:12
St. Pete-Clearwater, Tampa (PIE)

21:54
Knoxville (TYS)
Operates only on 2026-03-16
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:42, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
20:28
St. Pete-Clearwater, Tampa (PIE)

22:07
Knoxville (TYS)
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:39, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41423
21:49
St. Pete-Clearwater, Tampa (PIE)

23:31
Knoxville (TYS)
Effective 2026-08-10 through 2026-08-17
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:42, non-stop
Airbus A320 (320)
This flight number is listed as serving the following routes:
  • Austin (AUS) - Knoxville (TYS)
  • Destin/Fort Walton Beach (VPS) - Knoxville (TYS)
  • Jacksonville (JAX) - Knoxville (TYS)
  • Knoxville (TYS) - Fort Lauderdale (FLL)
  • Orlando Sanford (SFB) - Knoxville (TYS)
  • St. Pete-Clearwater, Tampa (PIE) - Knoxville (TYS)
All Allegiant Air flights
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