Would you love to travel in business class but don’t want to pay the extra to do so? Why don’t you have a go at TAP Air Portugal’s Plusgrade? It’s really quite simple – when you buy your flight from Luxembourg you can also bid to upgrade to TAP Executive. Choose an additional amount on top of the economy fare that you would be happy to pay, submit a bid, and, if it’s accepted, you fly business class! More comfort for less – now that’s something that’s worth smiling about! Check out TAP’s great deals and book your flights from Luxembourg (LUX) today.