From breathtaking natural landmarks to inspirationally engaging museums,Flights to Tonga provide you with the opportunity to avail ultimate experiences. Experience swimming with the whales and sailing along the tropical island and indulge in an adventurous holiday. Start off your plans by exploring the magnificent Ana 'Ahu, also known as the Smoking Cave, along with many other natural landmarks by booking cheap flight tickets to Tonga with TravelHouseUK. Don’t miss out one of the most prominent natural wonders of the country, a 40-meter deep sinkhole known as the Makalea Cave.