Flight from Fukuoka to Haneda

Hi everyones,
I must go to Tokyo (with a flight from Fukuoka to Haneda) at the beginning of June. I would like to book the flight through website and intend to use Skymark. Because this trip is very important to me so I can not allow the delay even for one day. Skymark is cheap but is it reliable also? If there is anyone who has experience with Skymark before please advise.
Thank you very much,

I haven't flown Skymark, but I've flown JAL Express, which is also a fairly cheap domestic alternative. Their website has price info but only in Japanese, for some reason...efforts I made on their English website were met with requests to call a phone number. You can book completely online if you are comfortable with your Japanese. Good luck

Thank you very much ^ ^