Cheapest return flights from Washington to San Jose in April from $240

AirHint found the following cheapest return flights from Washington (IAD) to San Jose (SJO) in April 2026 (see full year).

Return flights

30 Apr - 05 May Volaris El Salvador
22 Apr - 29 Apr Volaris El Salvador
16 Apr - 20 Apr Volaris El Salvador
19 Apr - 26 Apr Volaris El Salvador
17 Apr - 20 Apr Avianca
02 Apr - 06 Apr Volaris El Salvador
25 Apr - 02 May Copa
19 Apr - 26 Apr United direct
03 Apr - 14 Apr Avianca
03 Apr - 13 Apr Frontier Airlines
03 Apr - 15 Apr Frontier Airlines
04 Apr - 11 Apr Volaris El Salvador

Also check the deals for one-way flights from Washington to San Jose in April.

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