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

Return flights

09 May - 16 May	Volaris Costa Rica	direct
02 May - 09 May	Volaris Costa Rica	direct
08 May - 11 May	Avianca	direct
29 May - 01 Jun	Volaris El Salvador	direct
04 May - 14 May	American Airlines	direct
13 May - 21 May	American Airlines	direct
18 May - 25 May	Avianca
20 May - 30 May	Avianca
07 May - 17 May	Avianca
18 May - 25 May	Avianca	direct
01 May - 09 May	Avianca
21 May - 01 Jun	Avianca	direct

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

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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Cheapest return flights from Miami to San Jose in May from $151

Return flights