Roundtrip Seattle to Osaka Airfare on United / ANA

Expedia / United Airlines is offering roundtrip flights from Seattle, WA (SEA) to Osaka, Japan (KIX) from $650, making 1 stop both ways. Travel is available from late-August, 2025 through May, 2026.

Important Details

• No special codes or coupons are required.
• These are basic economy fares that allow a personal item, a carry-on bag, and 1 free checked bag.
• There is no seat selection and no change. If you are traveling with children, you will be seated together as per United Airlines’ policy.
• This deal expires on May 31, 2026.

Travel Availability (Subject to Change)

• Departs SEA: August 26-27; September 1-3, 8-10, 16-17, 23-24, 29; October 7, 20-21, 27-28; November 3-4, 10-12, 17-18, 24-26; December 2-3, 8; January 7, 12-14, 19-21, 27; February 3, 17; March 2-4, 9-10; April 6-8, 13, 21-22, 27-28
• Returns: September 3-4, 9-12, 16-19, 23-26, 30; October 1-3, 7-10, 14-17, 21-24, 28-31; November 4-7, 11-13, 18-21, 25-26; December 4-5, 9-12, 16-19, 22-26; January 14-16, 20-23, 27-30; February 3-6, 10-13, 17-20, 24-27; March 4-6, 10-13, 17-18, 24-26; April 7-10, 14-17, 21, 29-30; May 1, 5-8, 12-15, 19-22, 26-29