30% Cap1-to-JAL bonus makes Tokyo business a buy: 56.5k miles + $353

Capital One is running its fourth 30% transfer bonus to JAL Mileage Bank in 12 months, turning the normally weak 1,000:750 ratio into an effective 1,000:975. The headline play is JAL business class from North America to Japan for 55,000 JAL miles (56,500 Capital One) plus $353 in taxes and fees after a $100 fuel surcharge cut on Sept 1. Availability at that rate is tight — book 11-12 months out — but JAL offers more premium award space than other Oneworld programs. Off-peak first class drops to 110,000 JAL miles (112,800 Capital One). Domestically, partner roundtrip awards combine segment distances, so Minneapolis to Chicago roundtrip costs just 12,000 JAL miles, not double. This bonus runs through Sept 30, and JAL requires accounts to be 60 days old before redeeming, so enroll now if you haven't.