Cheapest return flights from San Jose to Seoul in April from $675

AirHint found the following cheapest return flights from San Jose (SJC) to Seoul (ICN) in April 2026 (see full year).

Return flights

15 Apr - 22 Apr Alaska Airlines
09 Apr - 22 May Alaska Airlines
19 Apr - 25 Apr Alaska Airlines
11 Apr - 18 Apr Alaska Airlines
11 Apr - 17 Apr Alaska Airlines
01 Apr - 30 Apr Alaska Airlines
05 Apr - 17 Apr Korean Air
12 Apr - 19 Apr Korean Air
03 Apr - 12 Apr Korean Air
06 Apr - 12 Apr Alaska Airlines

Also check the deals for one-way flights from San Jose to Seoul in April.

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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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