AirHint found the following cheapest return flights from Cancun (CUN) to San Juan (SJU) in March 2026 (see full year).

Return flights

07 Mar - 13 Mar	Arajet
07 Mar - 11 Mar	Frontier Airlines
19 Mar - 26 Mar	Copa
21 Mar - 29 Mar	Copa
21 Mar - 30 Mar	Copa
20 Mar - 31 Mar	Copa
30 Mar - 31 Mar	Spirit Airlines
30 Mar - 06 Apr	Spirit Airlines
30 Mar - 11 Apr	Spirit Airlines
07 Mar - 09 Mar	Spirit Airlines
20 Mar - 06 Apr	Spirit Airlines
20 Mar - 30 Mar	Spirit Airlines
20 Mar - 28 Mar	Spirit Airlines
21 Mar - 06 Apr	Spirit Airlines

Also check the deals for one-way flights from Cancun to San Juan in March.

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 Cancun to San Juan in March from 191€

Return flights