Cheapest return flights from Washington to San Jose in May from 245€

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

Return flights

20 May - 27 May Avianca
25 May - 30 May Avianca
18 May - 20 May Avianca
02 May - 09 May Copa
16 May - 23 May Copa
16 May - 20 May Copa
13 May - 17 May Copa
09 May - 17 May Copa
15 May - 19 May Avianca
15 May - 22 May Avianca
20 May - 23 Jun Avianca
08 May - 10 Jun Avianca
09 May - 10 Jun 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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