AirHint found the following cheapest return flights from Trenton (TTN) to Atlanta (ATL) in December 2025 (see full year).

Return flights

11 Dec - 18 Dec	Frontier Airlines
14 Dec - 21 Dec	Frontier Airlines	direct
05 Dec - 07 Dec	Frontier Airlines
05 Dec - 08 Dec	Frontier Airlines
12 Dec - 19 Dec	Frontier Airlines
13 Dec - 20 Dec	Frontier Airlines
15 Dec - 22 Dec	Frontier Airlines
24 Dec - 28 Dec	Frontier Airlines

Also check the deals for one-way flights from Trenton to Atlanta in December.

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 Atlanta

Cheap car rent in Atlanta

Cheapest return flights from Trenton to Atlanta in December from $182

Return flights