Cheapest return flights from Washington to San Jose in May from 235€

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

Return flights

12 May - 19 May Avianca
09 May - 16 May Avianca
15 May - 19 May Avianca

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

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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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