Connecting thru DFW

I have done this several times, most recently at the end of December. Not sure what terminal is 'north terminal' , DFW terminals are designated by letter A through E. Outbound will not be an issue at all as once you deplane just catch the Skylink to terminal D. You never get outside security so you can get terminal-to-terminal in a matter of minutes. Just make sure at check-in that your bags are checked through to final destination and that you have boarding passes for both flights.

Return shouldn't be an issue either, given your layover time. Arrival/baggage area at Terminal D can be a bit chaotic- a lot of flights arriving the same time- but you have plenty of time, just be patient. Again, once you re-clear security just take the Skylink to your departure terminal.

A note: if eligible for admission you should check out the Amercian Express Centurion Lounge in Terminal D. A great place to spend your layover time.