Cheapest return flights from Seattle (SEA) to Osaka (KIX), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
11 Sep 21 Sep Frontier Airlines
08 Sep 15 Sep Alaska Airlines
01 Sep 08 Sep Alaska Airlines
09 Sep 16 Sep Alaska Airlines
06 Sep 16 Sep Alaska Airlines
08 Sep 18 Sep Frontier Airlines
24 Sep 03 Oct Alaska Airlines
25 Sep 04 Oct Alaska Airlines
04 Sep 11 Sep STARLUX Airlines
18 Sep 27 Sep Alaska Airlines
19 Sep 27 Sep Cathay Pacific
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deals for one-way flights from Seattle to Osaka in September.

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Updated Jul 9, 2026.

About these fares

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