The only scheduled destinations served by 'oomberside Shellport seem to be Amsterdam and Aberdeen. All their other flights merely ferry the unwashed, tattooed and body-pierced dregs of society from one god-forsaken hell-hole of a council estate or other to some cheap holiday spot or other in order to drink themselves into oblivion.....
Your friend could fly Humberside to Amsterdam, then Amsterdam to Stockholm.
Don't forget to take him to the National Fishing Heritage Centre at Grimsby dock and take a tour around the Ross Tiger. An excellent and informative way to spend an afternoon.