To get into Osaka, the cheapest options include taking the rail, bus or ferry into the main part of town. These are all reliable and efficient services.
You can take a taxi from Osaka Kansai Airport to the CBD, however this is expensive and will cost around ¥16,000-20,000 yen ($206-250).
It’s good to decide on how you'll get from the airport to your accommodation before you arrive. Get familiar with the available transport within Osaka, so you can get around the city with ease and make the most of your time in Japan.