Cheapest return flights from Washington to San Jose in April from $303

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

Return flights

04 Apr - 12 Apr Volaris El Salvador
17 Apr - 20 Apr Avianca
03 Apr - 11 Apr Avianca

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

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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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