Major Airlines not in Alliances

Cyprus Airways (CY)

A "forward facing" infant car safety seat (only for children aged between 6 months and 3 years, occupying a paid seat). The child type car seat must have a harness with a single release mechanism and the design must have the necessary structural provision to accommodate the aircraft seat's seat belt for restraining purposes

Emirates (EK)

Child restraint devices (CRDs) approved for use in aircraft only by any Joint Aviation Authorities (JAA), the United States Federal Aviation Administration (FAA) or Transport Canada may be used, if marked accordingly.
Parents or guardians may use infant car seats at any stage of the flight. Airport Services will approve the infant car seat at check-in for use onboard. Cabin crew will assist parents with the fitting of the car seat to the passenger seat. The car seat must be the forward facing type only and one that can be secured to the seat by the use of the lap seatbelt, and not a shoulder harness (2-point seatbelt) as per car vehicles.
A seat must be booked and child's fare paid for infants travelling in this manner. Passengers must supply their own approved infant car seat as per the list below.
Acceptable car seats:

• Seats accepted by United States Federal Motor Vehicle Safety Standards and Regulations (FMVSS) No. 213, and are manufactured to those standards on or after February 26, 1985. US approved seats manufactured after this date must bear the following labels in red lettering: “This restraint is certified for use in motor vehicles and aircraft;” and “this child restraint system conforms to all applicable federal motor vehicle safety standards.”
• Seats approved to Canadian Motor Vehicle Safety Standard (CMVSS) No. 213, entitled “Child Restraint Systems” or CMVSS No. 213.1, entitled “Infant seating and restraint systems.”
• Seats meeting European safety standards requirements of ECE regulation 44, -03, or later series of amendments.
• Seats qualified for use in aircraft according to German “Qualification Procedure for Child Restraint Systems for Use in Aircraft” (TÜV Doc.TÜV/958-01/2001).

Gulf Air (GF)

Passengers travelling with infants and children from 6 months to 3 years of age may use their own car type seats in conjunction with a normal aircraft seat when the appropriate child fare has been paid. The car seat must be a forward facing type with proper harnesses that can be strapped to a passenger seat by use of the lap belt.
Gulf Air does not permit rearward facing car seats or booster seats on board. The seat must be a purpose designed children’s car seat and must not exceed the dimensions of the relevant aircraft seat that has been paid for. The parent is primarily responsible to ensure that the child is the right size and weight for the car seat.
If you want your infant to sit on a separate seat, the infant must be between 6 and 23 months and you will be charged the child fare. You will need to ensure that you have a car seat that is approved for use on-board aircraft. These following car seats are accepted:

1. Seats that meet the Technical Standard order TSO-C100B by the Federal Aviation Administration of the United States of America accepts seats that meet or seats which have two markings “This Restraints is Certified for use in Motor Vehicles and Aircraft” in red lettering and “This seat conforms to all applicable Federal Motor Vehicle Safety Standard”.
2. Seats approved to Canadian Motor Vehicle Safety Standard Labeled “(CMVSS) No.213 entitled “Child Restraint Systems” or (CMVSS) No.213 entitled “Infant Seating and Restraint System”.
3. The Civil Aviation Authority (CAA) of the United Kingdom allows type 2040-1 Car chair, manufactured by Aviation Furnishing International Limited. It is accepted by the CAA (UK) as a Child Safety Seat specifically designed for aircraft applications.
4. Seats meeting European Safety Standard requirements of ECE Regulation 44 (ECE R44/03) (ECE: Economic Commission for Europe)

Jet Airways (9W)

You can choose to purchase a seat for your infant as long as you have the proper child restraint device
There appears to be no information on what the proper child restraint devices are however

Qatar Airways (QR)

If you are travelling with an infant and have purchased a separate seat for the infant, the following types of car seats are acceptable onboard:

1. Car seats that are approved for use in aircraft by JAA authority, the FAA or Transport Canada (based on a national technical standard); these are marked accordingly.
2. Car seats approved for use in motor vehicles and aircraft according to US FMVSS No 213 and are manufactured to these standards on or after February 26, 1985. US approved car seats manufactured after this date must bear the following labels in RED lettering:
   “THIS CHILD RESTRAINT SYSTEM CONFORMS TO ALL APPLICABLE FEDERAL MOTOR VEHICLE SAFETY STANDARD”
   and
   “THIS RESTRAINT IS CERTIFIED FOR USE IN MOTOR VEHICLES AND AIRCRAFT”
3. The car seat must bear two labels, although typically the text for these two required labels is merged onto one label.
    
4. Car seat approved for use in motor vehicles according to the UN standard ECE R 44, -03 or later series of amendments. The car seat must bear either a label showing approval of a foreign government or a label showing it was manufactured under the standards of the United Nations. The following is an example of the required labelling for a car seat manufactured under the standards of the United Nations (the “E” is consistently used in the label, but the number to the right of the “E” can change because it is the distinguishing number of the country that has granted approval):
    
5. Car seats approved for use in motor vehicles and aircraft according to Canadian CMVSS 213/213.1.
6. Car seats qualified for use in aircraft according to the German “Qualification Procedure for Child Restraint Systems for Use in Aircraft“(TÜV Doc.: TÜV/958-01/2001).
7. Car seats that bear a label or markings showing FAA approval through a STC. The following is an example:
    
8. The car seat must be clearly marked showing FAA approval under 21.305(d) and bear the label “FAA Approved in Accordance with 14 CFR 21.305(d).” The following is an example:
    

However the information on Qatar's website is confusing as elsewhere it states 'An infant car seat may be used for children over 2 years and it will need to occupy a normal passenger seat. It is recommended that an infant car seat be used for children weighing between 20 and 40lbs or 40 inches in height or less'

Virgin Atlantic (VS)
 
While your children enjoy their dedicated inflight entertainment, they’ll be comfy and safe in our seats designed just for them.
The seats are available on every flight, can be used in any cabin and are suitable for new-born babies up to children weighing 20kg (44lb) or measuring 100cm (40”) tall. To ensure you get a child seat, just buy a flight at the child fare - though you should note we'll need at least 12 hours' notice to ensure a child seat is available

Car Seats are not permitted for use in the cabin