Dialing telephone calls from the USA to Tonga
011
▶ 676
▶ local number
Step-by-step
011
▼ This IDD (International Direct Dial) prefix tells the phone system in the USA that you are dialing an international number.
676
▼ Country code for Tonga.
There are no area/city codes in Tonga.
local number
Notes
Not sure what time it is on the other end of the line? Look here for Tonga time, date, and time zone information.
If you are calling from a hotel or office phone system, additional steps may be required.