- Eva Air – The Hello Kitty Jet

These Hello Kitty design jets were designed and launched by EVA AIR to make flying fun and give passengers an experience to remember. Not just the plane, but at check-in, passengers receive Hello Kitty boarding passes and on-board, the cabin crew wears Hello Kitty uniform. You can find these flights on selected routes from flying to Bangkok & Taipei via Bangkok from London Heathrow airport.
2. ANA – Pokemon Lovers Unlimited

Love Pokemon? Fly with ANA (All Nippon Airways) because they fly in a themed jet on routes such as Tokyo to Frankfurt and Tokyo to Paris. To your utter surprise, the planes feature characters including Pikachu, Togepi, Mew and Snorlax, with in-flight treats ranging from juice served in Pokémon cups and flight attendants wearing colourful poké-aprons.
3. Air Malta – Relax while you fly

Did you always wish for a good massage while on the plane? Dreams come true! Air Malta’s Sky Spa offers the unusual service of free pampering on short-haul flights and for economy passengers. Unusual, ain’t it?
4. KLM Royal Dutch Airlines – Social Media taken too seriously

Now this is one of the most famous airlines that offer a ‘Meet and Seat’ service. What this service does is that you can view other passengers’ Facebook or LinkedIn profile details and then decide where you want to sit. Could go little creepy too, isn’t it?
5. Air New Zealand – Cuddle Class

This airline is especially for the ones who cannot keep their hands off their travel companions. This airline’s Economy SkyCouch, also known as ‘cuddle class’ is a row of three seats and the passengers can create a flat, flexible space to use. They even have an extension belt if you wish to lie down and disappear in to the back.
According to flightspro.co.uk