Cheapest return flights from San Francisco to Tongatapu in December from $1797

AirHint found the following cheapest return flights from San Francisco (SFO) to Tongatapu (TBU) in December 2025 (see full year).

Return flights

12 Dec - 19 Dec Alaska Airlines
28 Dec - 05 Jan Frontier Airlines

Also check the deals for one-way flights from San Francisco to Tongatapu in December.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Tongatapu

Cheap car rent in Tongatapu

Feel free to contact us with any feedback or request another flight research.