Thomas Cook packages over 4 million holidays each year and therefore we are able to offer your customers the most competitive prices in the marketplace. So if you want to offer your customers the very best in travel then you won’t find a better partner than Thomas Cook. And it’s not just what we say: Thomas Cook is the second largest Travel Group in Europe. Thomas Cook Airlines is the second biggest Leisure Airline in the UK and has been named as ‘Best-performing airline’ for two years running.