It is actually Edelweiss (with LHR/LCY to ZRH on Swiss) and it is seasonal, with A340s being used (to be replaced with A350s soon). It is also usually one day a week when they do operate that route ( No flights from early May to late October). Plus they also let you take your surfboard with your for free ! So I am thankful for this option from London.Swiss Air has a direct flight from Zurich to Puerto Plata on Thursdays which is popular with a British friend of mine.
However, they have this routine where when you arrive at POP, everyone has to get out, then people departing back to ZRH and people continuing to Montego Bay get back in (with a security check ?). Then in Montego Bay everyone gets out and then people getting back to ZRH (from POP and new ones joining in MBJ) get back in and then the flight goes back to Zurich. It is a bit tiring on the return leg to have to get out and go through security again late at night.
Service is quite good even and changing at Zurich is easy.

Holidays in Puerto Plata, Dominican Republic | Edelweiss
Travel with Edelweiss to Puerto Plata: surfing, diving or relaxing on the Caribbean beaches of the Dominican Republic.
