planning a trip to Tokyo, Hokkaido in July. We're family of 4.

Flight to Chitose is so much cheaper from NRT over HND.

Our In is HND and our Out is NRT to YVR.

So I was planning to tour Tokyo first then go to NRT, fly to Chitose round trip and fly out on the date of arrival from Chitose to NRT.
Arrival at NRT from Chitose is 12:15PM and our flight to YVR leaves at 4:15PM.

Would this work? How's Japan's domestic flight delay like? I'm looking at Jetstar cheap airline.

Thanks