One of Qatar Airways cheapest prices for a Cardiff to Bangkok flight we have right now is £ 683.The price for Qatar Airways flight between Cardiff to Bangkok will vary according to some factors, like seasonality and anticipation.On average though, flights with Qatar Airways cost £ 822.77 for the route Cardiff to Bangkok, 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 Cardiff - Bangkok chepeast Qatar Airways offers, as well as subscribe to get price drop alerts and be informed about best deals for this route.