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

Return flights

21 May - 26 May	Viva
04 May - 16 May	Viva
04 May - 19 May	Viva
17 May - 23 May	Viva
17 May - 26 May	Viva
04 May - 23 May	Viva
22 May - 26 May	Viva
07 May - 16 May	Viva
07 May - 19 May	Viva
18 May - 23 May	Viva
24 May - 06 Jun	Viva
21 May - 06 Jun	Viva
01 May - 07 Jun	Avianca
28 May - 04 Jun	Avianca
30 May - 02 Jun	Avianca
30 May - 08 Jun	Avianca
31 May - 08 Jun	Avianca
30 May - 06 Jun	Avianca
25 May - 01 Jun	Avianca	direct
17 May - 06 Jun	Viva

Also check the deals for one-way flights from Mexico City 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 Mexico City to San Jose in May from 166€

Return flights