The closest airport to Mambo Beach is Willemstad Airport, which is located in Willemstad. If you plan on visiting or staying in this area, landing at Willemstad Airport will be your best bet.
The best prices found on momondo for flights to Curaçao are:
£49 per person with Wingo
£136 per person with Insel Air
£141 per person with Aruba Airlines
Curacao has restricted the entry of all travelers who are not airline crew, authorized medical personnel, authorized government personnel, or residents of Curacao who have been pre-approved for entry by the Government of Curacao. Residents, medical personnel, and government personnel must have a verification letter from the government of Curacao proving they are allowed to enter Curacao. Travelers may still transit through Curacao, provided they remain on board of the same aircraft or do wing to wing transit from one aircraft to another without entering the transit terminal. A minimum of 24 hours prior notice is required. If you are planning to travel to Curaçao at this time, it is recommended that you stay up to date on current restrictions and follow proper safety measures while in public.