AirHint found the following cheapest return flights from Boston (BOS) to Cartagena (CTG) in August 2025 (see full year).

Return flights

13 Aug - 20 Aug	Spirit Airlines
24 Aug - 26 Aug	Spirit Airlines
06 Aug - 20 Aug	Spirit Airlines
13 Aug - 26 Aug	Spirit Airlines
15 Aug - 20 Aug	Spirit Airlines
24 Aug - 29 Aug	Spirit Airlines
29 Aug - 02 Sep	LATAM Airlines Group
13 Aug - 15 Aug	Spirit Airlines
06 Aug - 26 Aug	Spirit Airlines
13 Aug - 29 Aug	Spirit Airlines
15 Aug - 26 Aug	Spirit Airlines
29 Aug - 17 Sep	Spirit Airlines
24 Aug - 02 Sep	Spirit Airlines
13 Aug - 02 Sep	Spirit Airlines
15 Aug - 02 Sep	Spirit Airlines

Also check the deals for one-way flights from Boston to Cartagena in August.

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 Boston to Cartagena in August from $310

Return flights