Cheapest return flights from Washington to San Jose in April from $242

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

Return flights

08 Apr - 12 Apr Volaris El Salvador
23 Apr - 28 Apr Avianca
09 Apr - 12 Apr Volaris El Salvador
25 Apr - 28 Apr United
09 Apr - 16 Apr Avianca
13 Apr - 16 Apr Avianca
15 Apr - 19 Apr Copa
26 Apr - 03 May Copa
16 Apr - 20 Apr Avianca
11 Apr - 18 Apr Volaris El Salvador
18 Apr - 26 Apr Copa

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

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