AirHint found the following cheapest return flights from Washington (IAD) to Montego Bay (MBJ) in September 2025 (see full year).

Return flights

27 Sep - 03 Oct	Frontier Airlines
28 Sep - 04 Oct	Frontier Airlines
25 Sep - 01 Oct	Air Canada
25 Sep - 04 Oct	Frontier Airlines
17 Sep - 21 Sep	Copa
22 Sep - 26 Sep	Frontier Airlines
22 Sep - 28 Sep	Frontier Airlines
20 Sep - 27 Sep	Copa
27 Sep - 30 Sep	Copa
25 Sep - 28 Sep	Frontier Airlines
23 Sep - 26 Sep	United
19 Sep - 22 Sep	United
21 Sep - 22 Sep	Frontier Airlines
18 Sep - 23 Sep	Copa

Also check the deals for one-way flights from Washington to Montego Bay 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 Montego Bay in September from 362€

Return flights