Spirit Airlines flight NK 3921: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 12:42 Boston Logan (BOS) B 16:09 Orlando (MCO)
NK 3921 Non-stop Airbus A321neo (32Q) 3:27 Effective 2026-02-12 through 2026-02-22
Wed 20:37 New York LaGuardia (LGA) A 23:54 Fort Lauderdale (FLL) 4
NK 3921 Non-stop Airbus A320 (32A) 3:17 Operates only on 2026-01-07
This flight number is listed as serving the following routes:


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Spirit Airlines flight NK 3921: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Spirit Airlines NK3921
12:42
Boston Logan (BOS) B

16:09
Orlando (MCO)
Effective 2026-02-12 through 2026-02-22
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:27, non-stop
Airbus A321neo (32Q)
Direct Flights:
Spirit Airlines NK3921
20:37
New York LaGuardia (LGA) A

23:54
Fort Lauderdale (FLL) 4
Operates only on 2026-01-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:17, non-stop
Airbus A320 (32A)
This flight number is listed as serving the following routes:
  • Boston Logan (BOS) - Orlando (MCO)
  • New York LaGuardia (LGA) - Fort Lauderdale (FLL)
All Spirit Airlines flights
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