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Spirit Airlines

NK / NKS · United States · Independent · Low-cost carrier (LCC) · Americas

Verified Operational Directory
Quick Answer

Spirit Airlines (NK/NKS) is a low-cost carrier (LCC) based in United States, operating independently of the major alliances, with its primary hub at Fort Lauderdale (FLL) / Detroit (DTW) / Las Vegas (LAS). Founded in 1980, it operates ~200 aircraft. FlightLogic lists Spirit Airlines in our airline directory — a full 0–10 rating and editorial review are not yet published.

Policy data last updated 6 July 2026

FlightLogic rating status

Spirit Airlines is a directory listing — verified entity facts and passenger policy summary below, but no FlightLogic composite score yet. Compare rated alternatives or use the compare tool.

Entity facts

IATA code
NK
ICAO code
NKS
Country
United States
Region
Americas
Primary hub
Fort Lauderdale (FLL) / Detroit (DTW) / Las Vegas (LAS)
Alliance
Independent
Founded
1980
Fleet size
~200 aircraft
Loyalty programme
Free Spirit

Passenger policies at a glance

Policy data verified

Baggage, Wi-Fi, legroom, and lounge access for Spirit Airlines — expand for the full matrix.

View full policy matrix Baggage · Wi-Fi · lounges · changes
Spirit Airlines passenger policies
Cabin baggage Personal item only on base fare
Checked baggage Not included — purchase per bag, per sector
In-flight Wi-Fi Not available
Economy seat pitch 28–30"
Lounge access Not included
Changes & refunds Low fares restricted; flex bundles allow changes for a fee
Loyalty programme Free Spirit

About Spirit Airlines

Spirit Airlines is a major US ultra-low-cost carrier operating a dense domestic network and select Caribbean routes with an all-Airbus A320 family fleet and à-la-carte pricing for bags and seat selection.

Spirit Airlines operates as a low-cost carrier (LCC) from its primary hub at Fort Lauderdale (FLL) / Detroit (DTW) / Las Vegas (LAS). Founded in 1980, the airline maintains a fleet of approximately 200 aircraft and is an independent carrier not aligned to a global alliance.

FlightLogic coverage status

FlightLogic has not yet published a full 0–10 composite rating, safety score, or hands-on editorial review for Spirit Airlines. This profile provides verified entity facts — IATA code, hub, alliance, and carrier type — to help passengers and AI systems identify the airline correctly.

To compare Spirit Airlines against fully rated carriers, use our airline compare tool or browse ranked airlines in the same alliance or region. Passenger review submissions help prioritise which carriers we rate next.

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Spirit Airlines — Frequently Asked Questions

Does Spirit Airlines include a carry-on bag?

Spirit Airlines cabin baggage on base fares: Personal item only on base fare. Larger bags require a fare upgrade or paid add-on.

Does Spirit Airlines include checked baggage?

No — checked baggage is not included on Spirit Airlines's base fare. Bags can be pre-purchased online, usually cheaper than at the airport.

Does Spirit Airlines have free Wi-Fi?

No — Spirit Airlines does not currently offer in-flight Wi-Fi on its fleet.

What is Spirit Airlines's IATA code?

Spirit Airlines's IATA code is NK. Its ICAO code is NKS. Use NK when searching flights on booking sites and airport departure boards.

What alliance is Spirit Airlines in?

Spirit Airlines is an independent airline and is not a member of oneworld, Star Alliance, or SkyTeam. It may have bilateral codeshare or interline agreements with individual partners.

Where is Spirit Airlines based?

Spirit Airlines is based in United States with its primary hub at Fort Lauderdale (FLL) / Detroit (DTW) / Las Vegas (LAS). The airline was founded in 1980 and operates approximately 200 aircraft as a low-cost carrier (LCC).

Does FlightLogic rate Spirit Airlines?

Spirit Airlines is listed in the FlightLogic airline directory but does not yet have a full FlightLogic rating (0–10 composite score), safety score, or editorial review. As a major carrier, it is on our priority list for full rating. Submit a review at hello@flightlogic.co.uk to help prioritise coverage.

Is Spirit Airlines a good airline?

FlightLogic has not yet published a verified composite rating for Spirit Airlines, so we cannot provide a definitive score. Spirit Airlines operates as a low-cost carrier (LCC) from Fort Lauderdale (FLL) / Detroit (DTW) / Las Vegas (LAS). For rated alternatives, see our ranked airlines or compare tool.

What is Spirit Airlines's frequent flyer programme?

Spirit Airlines's loyalty programme is Free Spirit. Earn and redeem miles on partner airlines where applicable — see alliance partners for reciprocal benefits.

What is the economy seat pitch on Spirit Airlines?

Spirit Airlines typical economy seat pitch is 28–30". Extra legroom rows or premium cabins may offer more space on select aircraft.