Cheapest return flights from Seattle to San Jose in March from $398

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

Return flights

10 Mar - 17 Mar Alaska Airlines
04 Mar - 10 Mar Alaska Airlines
05 Mar - 08 Mar Alaska Airlines
10 Mar - 20 Mar Frontier Airlines
06 Mar - 07 Mar Alaska Airlines
04 Mar - 09 Mar American Airlines
19 Mar - 25 Mar Alaska Airlines
30 Mar - 05 Apr Frontier Airlines
06 Mar - 08 Mar Alaska Airlines
25 Mar - 09 Apr Alaska Airlines
20 Mar - 22 Mar Alaska Airlines
26 Mar - 09 Apr Alaska Airlines
25 Mar - 10 Apr Alaska Airlines
18 Mar - 01 Apr Frontier Airlines
20 Mar - 29 Mar Alaska Airlines
26 Mar - 10 Apr Alaska Airlines

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

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