Jet Airways traditionally started off as a full-service airline, and as of today, continues to be a full service airline.

During a period starting in the mid-2000s, the aviation sector in India saw massive price crashes due to the introduction of low-cost / budget airlines such as Air Deccan (later rebranded as Kingfisher Red after an acquisition by now-defunct Kingfisher Airlines). Jet Airways acquired a competitor called Air Sahara and rebranded it as JetLite and JetKonnect (the airlines continued to use the old callsign "S2" as opposed to Jet Airways' "9W") to compete in the same segment. JetLite and JetKonnect were priced somewhat differently, with one being low-cost, and another being mid-tier.

It's worth noting that the above subsidiaries were primarily for internal flights within with India, so the discussion is somewhat moot for international flights; with the exception of a few South Asian routes, international flights were always under the main Jet Airways brand. In 2014, Jet Airways absorbed the low-cost brands and went full-service. It's also now partly owned by Etihad Airways.

By all characteristics, Jet Airways is considered a full-service airline:

• It has multiple classes of services, including a business-equivalent "Premiere" Class and First Class.
• Flies to major airports, as opposed to smaller secondary airports.
• Has in-flight entertainment on the Boeing 777-300ERs it flies on long-range international flights, and on Boeing 737s / Airbus A330s it flies internationally.
• The seat pitch on its flights (30-32", based on the aircraft type) is actually pretty standard for economy airlines.
• I can't find a handy chart yet, but from personal experience, their baggage allowance is pretty standard as well - 2 x 23kg on economy on long haul flights.

Jet Airways traditionally started off as a full-service airline, and as of today, continues to be a full service airline.

During a period starting in the mid-2000s, the aviation sector in India saw massive price crashes due to the introduction of low-cost / budget airlines such as Air Deccan (later rebranded as Kingfisher Red after an acquisition by now-defunct Kingfisher Airlines). Jet Airways acquired a competitor called Air Sahara and rebranded it as JetLite and JetKonnect (the airlines continued to use the old callsign "S2" as opposed to Jet Airways' "9W") to compete in the same segment. JetLite and JetKonnect were priced somewhat differently, with one being low-cost, and another being mid-tier.

It's worth noting that the above subsidiaries were primarily for internal flights within with India, so the discussion is somewhat moot for international flights; with the exception of a few South Asian routes, international flights were always under the main Jet Airways brand. In 2014, Jet Airways absorbed the low-cost brands and went full-service. It's also now partly owned by Etihad Airways.

By all characteristics, Jet Airways is considered a full-service airline:

• It has multiple classes of services, including a business-equivalent "Premiere" Class and First Class.
• Flies to major airports, as opposed to smaller secondary airports.
• Has in-flight entertainment on the Boeing 777-300ERs it flies on long-range international flights, and on Boeing 737s / Airbus A330s it flies internationally.
• The seat pitch on its flights (30-32", based on the aircraft type) is actually pretty standard for economy airlines.
• I can't find a handy chart yet, but from personal experience, their baggage allowance is pretty standard as well - 2 x 23kg on economy on long haul flights.
• Jet Airways is not a part of any airline alliance yet since it needs to get the Indian government's approval to do so, before it can join one. (This was a political issue, since the national carrier Air India wasn't allowed to join an alliance until 2014 when it joined Star Alliance.) However, Jet Airways has bespoke partnerships with airlines across Star Alliance, Oneworld, and Skyteam.