AirHint found the following cheapest return flights from Washington (IAD) to Nassau (NAS) in December 2025 (see full year).

Return flights

29 Dec - 07 Jan	United
25 Dec - 30 Dec	United
25 Dec - 31 Dec	United
10 Dec - 13 Dec	United
09 Dec - 14 Dec	United
21 Dec - 24 Dec	United	direct
23 Dec - 26 Dec	United
31 Dec - 05 Jan	Frontier Airlines
25 Dec - 01 Jan	United
23 Dec - 01 Jan	United
26 Dec - 31 Dec	Delta
24 Dec - 28 Dec	Delta
20 Dec - 25 Dec	Frontier Airlines
30 Dec - 04 Jan	Frontier Airlines
26 Dec - 01 Jan	Frontier Airlines
31 Dec - 05 Jan	United	direct
20 Dec - 24 Dec	Frontier Airlines
27 Dec - 04 Jan	Frontier Airlines
30 Dec - 03 Jan	Allegiant Air
27 Dec - 03 Jan	Frontier Airlines

Also check the deals for one-way flights from Washington to Nassau 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.

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Cheapest return flights from Washington to Nassau in December from 356€

Return flights