American Airlines flight AA 3999: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Daily 12:19 Dallas Fort Worth (DFW) 13:42 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:23 Effective 2026-04-07 through 2026-05-20
Daily 12:19 Dallas Fort Worth (DFW) 13:54 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:35 Effective 2026-05-21 through 2026-07-01
Daily 12:19 Dallas Fort Worth (DFW) 13:47 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:28 Effective 2026-07-02 through 2026-08-04
Daily 12:19 Dallas Fort Worth (DFW) 13:52 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:33 Effective 2026-09-09 through 2026-10-04
Daily 12:19 Dallas Fort Worth (DFW) 13:50 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:31 Effective from 2026-10-05
Daily 12:20 Dallas Fort Worth (DFW) 13:59 Garden City (GCK)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:39 Effective 2026-08-05 through 2026-09-08
Daily 14:17 Garden City (GCK) 15:55 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:38 Effective from 2026-10-05
Daily 14:24 Garden City (GCK) 15:55 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:31 Effective 2026-09-09 through 2026-10-04
Daily 14:29 Garden City (GCK) 15:55 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 170 / EMB 175 (E70) 1:26 Effective 2026-08-05 through 2026-09-08
Daily 16:19 Garden City (GCK) 17:50 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:31 Effective 2026-07-02 through 2026-08-04
Daily 16:24 Garden City (GCK) 17:50 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:26 Effective 2026-05-21 through 2026-07-01
Daily 16:25 Garden City (GCK) 17:50 Dallas Fort Worth (DFW)
AA 3999 Non-stop Embraer EMB 175 (E75) 1:25 Effective 2026-04-07 through 2026-05-20
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This flight number is listed as serving the following routes:


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American Airlines flight AA 3999: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
American Airlines AA3999
12:19
Dallas Fort Worth (DFW)

13:42
Garden City (GCK)
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3999
12:19
Dallas Fort Worth (DFW)

13:54
Garden City (GCK)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3999
12:19
Dallas Fort Worth (DFW)

13:47
Garden City (GCK)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:28, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3999
12:19
Dallas Fort Worth (DFW)

13:52
Garden City (GCK)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:33, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
12:19
Dallas Fort Worth (DFW)

13:50
Garden City (GCK)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
12:20
Dallas Fort Worth (DFW)

13:59
Garden City (GCK)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:39, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
14:17
Garden City (GCK)

15:55
Dallas Fort Worth (DFW)
Effective from 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:38, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
14:24
Garden City (GCK)

15:55
Dallas Fort Worth (DFW)
Effective 2026-09-09 through 2026-10-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
14:29
Garden City (GCK)

15:55
Dallas Fort Worth (DFW)
Effective 2026-08-05 through 2026-09-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:26, non-stop
Embraer EMB 170 / EMB 175 (E70)
Direct Flights:
American Airlines AA3999
16:19
Garden City (GCK)

17:50
Dallas Fort Worth (DFW)
Effective 2026-07-02 through 2026-08-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:31, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3999
16:24
Garden City (GCK)

17:50
Dallas Fort Worth (DFW)
Effective 2026-05-21 through 2026-07-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:26, non-stop
Embraer EMB 175 (E75)
Direct Flights:
American Airlines AA3999
16:25
Garden City (GCK)

17:50
Dallas Fort Worth (DFW)
Effective 2026-04-07 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:25, non-stop
Embraer EMB 175 (E75)
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This flight number is listed as serving the following routes:
  • Dallas Fort Worth (DFW) - Garden City (GCK)
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