AirHint found the following cheapest return flights from Washington (DCA) to San Juan (SJU) in November 2025 (see full year).

Return flights

12 Nov - 19 Nov	Delta
11 Nov - 17 Nov	Southwest Airlines
13 Nov - 26 Nov	Southwest Airlines
15 Nov - 17 Nov	Southwest Airlines
09 Nov - 14 Nov	United
03 Nov - 12 Nov	United
04 Nov - 18 Nov	United
05 Nov - 19 Nov	United
14 Nov - 28 Nov	United
17 Nov - 23 Nov	Southwest Airlines
18 Nov - 02 Dec	United
17 Nov - 01 Dec	United
20 Nov - 04 Dec	United
21 Nov - 05 Dec	United
23 Nov - 07 Dec	United
22 Nov - 06 Dec	United

Also check the deals for one-way flights from Washington to San Juan in November.

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 San Juan in November from 183€

Return flights