One of Caribbean Airlines cheapest prices for a London to Port of Spain flight we have right now is £ 982.The price for Caribbean Airlines flight between London to Port of Spain will vary according to some factors, like seasonality and anticipation.On average though, flights with Caribbean Airlines cost £ 1010.97 for the route London to Port of Spain, though it depends a lot on the season and how far in advance you book your tickets.By launching a search at Opodo you can easily check London - Port of Spain chepeast Caribbean Airlines offers, as well as subscribe to get price drop alerts and be informed about best deals for this route.