Thomson Holidays Thomson Holidays 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 Thomson Holidays. And it's not just what we say. Thomas Cook is the second largest Travel Group in Europe (Source: TravelTrack)  Thomson Holidays Airlines is the second biggest Leisure Airline in the UK and has been named as Best-performing airline for two years running (Source: Holiday Which?) Thomson Holidays is the UK's market leader in holidays to Turkey, Cuba, Portugal, Rhodes, Zante, Canada and Egypt. Thomson Holidays discount coupon. Receive £20 OFF when you book online.Click the banner in the box below, search your trip, the copy and paste this code ------> 1913 <-----  in the promotional code or coupon box and receive your discount. This is only availble from this website.