Cheapest return flights from Seattle to San Juan in March from $432

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

Return flights

17 Mar - 31 Mar Delta
02 Mar - 05 Mar Delta
31 Mar - 03 Apr Delta
01 Mar - 04 Mar Southwest Airlines
03 Mar - 06 Mar Delta
23 Mar - 26 Mar Delta
24 Mar - 27 Mar Delta
07 Mar - 10 Mar Alaska Airlines
06 Mar - 09 Mar Aeromexico
30 Mar - 02 Apr Delta
17 Mar - 20 Mar Delta
22 Mar - 25 Mar Delta
29 Mar - 01 Apr Delta

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

Skyscanner

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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