Cheapest return flights from Washington to San Jose in April from 253€

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

Return flights

19 Apr - 25 Apr Avianca
12 Apr - 18 Apr Copa
19 Apr - 26 Apr Copa
11 Apr - 18 Apr Copa
10 Apr - 18 Apr Avianca
03 Apr - 14 Apr Frontier Airlines
19 Apr - 26 Apr United direct
03 Apr - 13 Apr Frontier Airlines
03 Apr - 15 Apr Frontier Airlines
03 Apr - 11 Apr Frontier Airlines

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

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