Cheapest return flights from Seattle to San Jose in May from $409

Best time to book flights for Seattle (SEA) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to San Jose (SJO) in May 2025 (see full year).

Return flights

24 May - 01 Jun Spirit Airlines
20 May - 27 May Spirit Airlines
18 May - 27 May Frontier Airlines
17 May - 26 May Frontier Airlines
16 May - 19 May Frontier Airlines
20 May - 31 May Alaska Airlines
18 May - 24 May Spirit Airlines
14 May - 18 May Alaska Airlines
08 May - 15 May American Airlines

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

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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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