Flight Narita International Airport departs from Tokyo Narita International Airport at 10:05 and arrives at Fukuoka Fukuoka Airport at 12:25.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 1119 Km. So the average speed is roughly 480 Km.
The best day to arrive at Tokyo is Monday and it would be best to avoid Saturday, as prices are on average 111.62% higher than on Monday. (Average prices, based on 1288912 datapoints.)
We have a lot more statistics for flights JQ 507 and between Tokyo and Fukuoka.