Allegiant Air flight G4 1399: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu 06:30 Knoxville (TYS) 08:14 Washington Dulles (IAD)
G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-03-12
Thu 08:30 Knoxville (TYS) 11:05 Phoenix Sky Harbor (PHX)
G4 1399 Non-stop Airbus A320 (320) 4:35 Operates only on 2026-02-19
Thu 08:30 Knoxville (TYS) 10:46 Phoenix Sky Harbor (PHX)
G4 1399 Non-stop Airbus A320 (320) 4:16 Operates only on 2026-03-05
Sun 08:30 Knoxville (TYS) 09:46 Phoenix Sky Harbor (PHX)
G4 1399 Non-stop Airbus A320 (320) 4:16 Operates only on 2026-03-08
Tue 09:00 Knoxville (TYS) 10:16 Phoenix Sky Harbor (PHX)
G4 1399 Non-stop Airbus A320 (320) 4:16 Operates only on 2026-03-10
Thu 09:00 Knoxville (TYS) 09:21 Destin/Fort Walton Beach (VPS)
G4 1399 Non-stop Airbus A320 (320) 1:21 Operates only on 2026-03-19
Mon,Fri 09:55 Newark Liberty, New York (EWR) 11:55 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 2:00 Valid until 2026-01-05
Mon,Fri 09:55 Newark Liberty, New York (EWR) 12:05 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 2:10 Effective 2026-01-09 through 2026-02-09
Sat 09:55 Destin/Fort Walton Beach (VPS) 12:51 Clarksburg (CKB)
G4 1399 Non-stop Airbus A320 (320) 1:56 Effective 2026-07-04 through 2026-08-01
Thu 09:56 Fort Lauderdale (FLL) 1 12:04 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 2:08 Operates only on 2026-02-12
Thu,Sun 09:56 Phoenix Sky Harbor (PHX) 16:20 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 3:24 Effective 2026-04-02 through 2026-05-17
Sat 12:13 Gulf Shores (GUF) 14:28 Kansas City (MCI)
G4 1399 Non-stop Airbus A320 (320) 2:15 Effective 2026-08-08 through 2026-08-15
Wed 14:08 Kansas City (MCI) 16:12 Gulf Shores (GUF)
G4 1399 Non-stop Airbus A320 (320) 2:04 Effective 2026-06-03 through 2026-06-24
Wed 14:11 Kansas City (MCI) 16:13 Gulf Shores (GUF)
G4 1399 Non-stop Airbus A320 (320) 2:02 Effective 2026-07-01 through 2026-07-29
Wed 14:25 Kansas City (MCI) 16:45 Gulf Shores (GUF)
G4 1399 Non-stop Airbus A320 (320) 2:20 Effective 2026-05-20 through 2026-05-27
Wed 14:25 Kansas City (MCI) 16:45 Gulf Shores (GUF)
G4 1399 Non-stop Airbus A320 (320) 2:20 Effective 2026-08-05 through 2026-08-12
Fri 15:54 Las Vegas Harry Reid (LAS) 1 22:39 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 3:45 Operates only on 2026-03-06
Fri 15:54 Las Vegas Harry Reid (LAS) 1 22:39 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 3:45 Effective 2026-03-20 through 2026-03-27
Thu 16:04 Harrisburg (MDT) 18:22 Jacksonville (JAX)
G4 1399 Non-stop Airbus A320 (320) 2:18 Operates only on 2026-03-26
Fri 16:14 Las Vegas Harry Reid (LAS) 1 22:59 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 3:45 Operates only on 2026-03-13
Mon,Fri 16:35 St. Pete-Clearwater, Tampa (PIE) 18:15 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 1:40 Effective 2026-04-10 through 2026-05-18
Sat 17:44 Gulf Shores (GUF) 20:11 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 1:27 Effective 2026-06-06 through 2026-06-27
Sun 17:56 Knoxville (TYS) 19:40 Washington Dulles (IAD)
G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-22
Sun 18:11 Knoxville (TYS) 19:55 Washington Dulles (IAD)
G4 1399 Non-stop Airbus A320 (320) 1:44 Operates only on 2026-02-15
Thu 18:42 Louisville (SDF) 19:21 Destin/Fort Walton Beach (VPS)
G4 1399 Non-stop Airbus A320 (320) 1:39 Operates only on 2026-06-04
Thu 18:54 Louisville (SDF) 19:33 Destin/Fort Walton Beach (VPS)
G4 1399 Non-stop Airbus A320 (320) 1:39 Effective 2026-06-11 through 2026-06-25
Mon 19:00 Knoxville (TYS) 20:40 St. Pete-Clearwater, Tampa (PIE)
G4 1399 Non-stop Airbus A320 (320) 1:40 Effective 2026-06-08 through 2026-06-29
Sun 20:28 Destin/Fort Walton Beach (VPS) 22:50 Knoxville (TYS)
G4 1399 Non-stop Airbus A320 (320) 1:22 Effective 2026-08-09 through 2026-08-16
Thu 20:38 Knoxville (TYS) 22:40 Fort Lauderdale (FLL) 1
G4 1399 Non-stop Boeing 737 MAX 8 (7M8) 2:02 Operates only on 2026-05-21
Thu,Sun 21:19 Knoxville (TYS) 23:21 Fort Lauderdale (FLL) 1
G4 1399 Non-stop Boeing 737 MAX 8 (7M8) 2:02 Effective 2026-05-24 through 2026-05-31
Thu,Sun 21:21 Knoxville (TYS) 23:23 Fort Lauderdale (FLL) 1
G4 1399 Non-stop Boeing 737 MAX 8 (7M8) 2:02 Effective 2026-07-02 through 2026-08-02
This flight number is listed as serving the following routes:


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Allegiant Air flight G4 1399: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Allegiant Air G41399
06:30
Knoxville (TYS)

08:14
Washington Dulles (IAD)
Operates only on 2026-03-12
Mon
-
Tue
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Wed
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Thu
Fri
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Sat
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Sun
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Duration: 1:44, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
08:30
Knoxville (TYS)

11:05
Phoenix Sky Harbor (PHX)
Operates only on 2026-02-19
Mon
-
Tue
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Wed
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Thu
Fri
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Sat
-
Sun
-
Duration: 4:35, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
08:30
Knoxville (TYS)

10:46
Phoenix Sky Harbor (PHX)
Operates only on 2026-03-05
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:16, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
08:30
Knoxville (TYS)

09:46
Phoenix Sky Harbor (PHX)
Operates only on 2026-03-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:16, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:00
Knoxville (TYS)

10:16
Phoenix Sky Harbor (PHX)
Operates only on 2026-03-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:16, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:00
Knoxville (TYS)

09:21
Destin/Fort Walton Beach (VPS)
Operates only on 2026-03-19
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:21, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:55
Newark Liberty, New York (EWR)

11:55
Knoxville (TYS)
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:55
Newark Liberty, New York (EWR)

12:05
Knoxville (TYS)
Effective 2026-01-09 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:10, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:55
Destin/Fort Walton Beach (VPS)

12:51
Clarksburg (CKB)
Effective 2026-07-04 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:56, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:56
Fort Lauderdale (FLL) 1

12:04
Knoxville (TYS)
Operates only on 2026-02-12
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:08, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
09:56
Phoenix Sky Harbor (PHX)

16:20
Knoxville (TYS)
Effective 2026-04-02 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 3:24, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
12:13
Gulf Shores (GUF)

14:28
Kansas City (MCI)
Effective 2026-08-08 through 2026-08-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:15, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
14:08
Kansas City (MCI)

16:12
Gulf Shores (GUF)
Effective 2026-06-03 through 2026-06-24
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:04, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
14:11
Kansas City (MCI)

16:13
Gulf Shores (GUF)
Effective 2026-07-01 through 2026-07-29
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:02, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
14:25
Kansas City (MCI)

16:45
Gulf Shores (GUF)
Effective 2026-05-20 through 2026-05-27
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
14:25
Kansas City (MCI)

16:45
Gulf Shores (GUF)
Effective 2026-08-05 through 2026-08-12
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
15:54
Las Vegas Harry Reid (LAS) 1

22:39
Knoxville (TYS)
Operates only on 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:45, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
15:54
Las Vegas Harry Reid (LAS) 1

22:39
Knoxville (TYS)
Effective 2026-03-20 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:45, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
16:04
Harrisburg (MDT)

18:22
Jacksonville (JAX)
Operates only on 2026-03-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:18, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
16:14
Las Vegas Harry Reid (LAS) 1

22:59
Knoxville (TYS)
Operates only on 2026-03-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:45, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
16:35
St. Pete-Clearwater, Tampa (PIE)

18:15
Knoxville (TYS)
Effective 2026-04-10 through 2026-05-18
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:40, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
17:44
Gulf Shores (GUF)

20:11
Knoxville (TYS)
Effective 2026-06-06 through 2026-06-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:27, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
17:56
Knoxville (TYS)

19:40
Washington Dulles (IAD)
Operates only on 2026-02-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:44, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
18:11
Knoxville (TYS)

19:55
Washington Dulles (IAD)
Operates only on 2026-02-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:44, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
18:42
Louisville (SDF)

19:21
Destin/Fort Walton Beach (VPS)
Operates only on 2026-06-04
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:39, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
18:54
Louisville (SDF)

19:33
Destin/Fort Walton Beach (VPS)
Effective 2026-06-11 through 2026-06-25
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:39, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
19:00
Knoxville (TYS)

20:40
St. Pete-Clearwater, Tampa (PIE)
Effective 2026-06-08 through 2026-06-29
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
20:28
Destin/Fort Walton Beach (VPS)

22:50
Knoxville (TYS)
Effective 2026-08-09 through 2026-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:22, non-stop
Airbus A320 (320)
Direct Flights:
Allegiant Air G41399
20:38
Knoxville (TYS)

22:40
Fort Lauderdale (FLL) 1
Operates only on 2026-05-21
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:02, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Allegiant Air G41399
21:19
Knoxville (TYS)

23:21
Fort Lauderdale (FLL) 1
Effective 2026-05-24 through 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 2:02, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Allegiant Air G41399
21:21
Knoxville (TYS)

23:23
Fort Lauderdale (FLL) 1
Effective 2026-07-02 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 2:02, non-stop
Boeing 737 MAX 8 (7M8)
This flight number is listed as serving the following routes:
  • Destin/Fort Walton Beach (VPS) - Clarksburg (CKB)
  • Gulf Shores (GUF) - Kansas City (MCI)
  • Gulf Shores (GUF) - Knoxville (TYS)
  • Harrisburg (MDT) - Jacksonville (JAX)
  • Knoxville (TYS) - Destin/Fort Walton Beach (VPS)
  • Knoxville (TYS) - Fort Lauderdale (FLL)
  • Knoxville (TYS) - Phoenix Sky Harbor (PHX)
  • Knoxville (TYS) - St. Pete-Clearwater, Tampa (PIE)
  • Knoxville (TYS) - Washington Dulles (IAD)
  • Las Vegas Harry Reid (LAS) - Knoxville (TYS)
  • Louisville (SDF) - Destin/Fort Walton Beach (VPS)
  • Newark Liberty, New York (EWR) - Knoxville (TYS)
All Allegiant Air flights
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