AirHint found the following cheapest one-way flights from Seattle (SEA) to Osaka (KIX) in May 2026 (see full year).
One-Way flights
| 14 May | Philippine Airlines | ||
| 06 May | Cathay Pacific | ||
| 05 May | Cathay Pacific | ||
| 04 May | Cathay Pacific | ||
| 02 May | Cathay Pacific | ||
| 01 May | Korean Air |
Also check the deals for return flights from Seattle to Osaka in May.
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