With the RTW you're allowed four flights within Asia, six within North America (which includes the Caribbean and Central America as well as Alaska and Hawaii) and four within Europe and the Middle East, but only two stopovers in the "continent of origin," in this case Europe.

In your case you could fly around Japan for the 4 flights - CTS/Sapporo for Hokkaido, or to other Japanese destinations, or Okinawa, or you could stop for a day or two in Hong Kong or Singapore on the way back to the UK. For Hawaii, you could fly to Honolulu, Maui, the Big Island or Kauai nonstop from the mainland. Alaska Airlines recently announced it's acquiring Hawaii Airlines, which has a big network in Hawaii as well as serving a number of mainland cities. If that acquisition is complete by the end of this year (??) you might be able to use the RTW for in-state travel in Hawaii too.

I put together an imaginary route using the RTW from Oslo. Like I say, imaginary, but maybe indicative of what you could do.



This would start in Oslo, then travel to Dallas from London, then to Honolulu. I picked DFW as the connection point on the mainland because American flies 789s with beds from DFW to HNL, while service from the west coast on American or Alaska is in planes with domestic business/first class seats, i.e., recliners.

After Hawaii you'd fly on JL to Haneda, then I show a JL flight (on 787s also) up to CTS on Hokkaido, back to Tokyo, then returning to Edinburgh via Helsinki. After however long you want, you'd end the trip back in Oslo. I show a side trip to Qatar using QRs nonstops from EDI to DOH, then DOH-OSL, but you could go someplace else (Madrid? Finland?) if you want. I haven't figured out the tier points or Avios for this route, but they'd be significant.

Just an example.