AirHint found the following cheapest return flights from Seattle (SEA) to Osaka (KIX) in April 2026 (see full year).
Return flights
| 17 Apr - 21 Apr | Asiana Airlines | ||
| 26 Apr - 05 May | Philippine Airlines | ||
| 08 Apr - 15 Apr | Cathay Pacific | ||
| 25 Apr - 03 May | Frontier Airlines |
Also check the deals for one-way flights from Seattle to Osaka in April.
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