AirHint found the following cheapest return flights from Washington (IAD) to Punta Cana (PUJ) in September 2025 (see full year).

Return flights

12 Sep - 21 Sep	Allegiant Air
08 Sep - 13 Sep	Frontier Airlines
06 Sep - 10 Sep	Copa
10 Sep - 13 Sep	Copa
12 Sep - 16 Sep	Copa
20 Sep - 27 Sep	Copa
11 Sep - 15 Sep	United	direct
15 Sep - 29 Sep	United	direct
16 Sep - 30 Sep	United	direct
08 Sep - 22 Sep	United	direct
17 Sep - 01 Oct	United	direct
23 Sep - 07 Oct	United	direct
24 Sep - 08 Oct	United	direct
25 Sep - 09 Oct	United	direct
30 Sep - 14 Oct	United	direct
29 Sep - 13 Oct	United
30 Sep - 04 Oct	Air Canada
19 Sep - 03 Oct	United	direct
21 Sep - 05 Oct	United	direct
28 Sep - 12 Oct	United

Also check the deals for one-way flights from Washington to Punta Cana in September.

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 Punta Cana in September from $436

Return flights