US ultra-low-cost carrier based in United States.
| IATA Code | NK |
|---|---|
| ICAO Code | NKS |
| Callsign | SPIRIT WINGS |
| Country | United States |
| Category | US ultra-low-cost carrier |
When you see a segment line like this in a PNR, the airline code identifies Spirit Airlines:
2 NK 587 Y 15JUL 2*JFKLHR HK1 800A 2000P
The two-letter code NK at the start of the segment line is Spirit Airlines's IATA code — every flight segment operated by Spirit Airlines in a GDS PNR (Amadeus, Sabre, Galileo, or Worldspan) begins with this code, followed by the flight number.
Spirit Airlines is a us ultra-low-cost carrier, based in United States. Its ICAO code, NKS, is used for air traffic control and flight planning, while its radio callsign is “SPIRIT WINGS”.
Like most airlines, Spirit Airlines's fare classes follow the standard GDS booking-class letter system. See our complete booking class guide for what each letter (F, J, Y, and so on) typically means.
Spirit Airlines's IATA code is NK. This two-letter code appears at the start of every flight segment operated by Spirit Airlines in a GDS PNR.
Spirit Airlines's ICAO code is NKS. The ICAO code is a separate, usually three-letter identifier used mainly in air traffic control and flight planning, distinct from the IATA code travel agents see in a PNR.
Paste the raw PNR text into PNRGenius and it will automatically detect Spirit Airlines's segments (marked with the NK code) and build a clean, client-ready itinerary in seconds.
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