MileWise, which allows travelers to find flights they can purchase with cash, airline miles or hotel and credit card points, now shows results for Chase, Citi, and Capital One credit cards, adding to American Express and Starwood. Aside from price, airline, and schedules, MileWise factors rewards points into query rankings to find the best deals. A one-on-one interview with co-founder Sanjay Kothari reveals the company's finance strategy, a look into the business model, and what's next for the travel-focused search engine.