DONE4 validity check
 

Would appreciate a view on validity of this RTW please…
OSL-LHR-xDOH-ICN-SYD-BNE-xSYD-xDFW-MSY-xDFW-SFO-xDOH-LHR-OSL
I think it is ok but I was tripping up on the “only one intercontinental departure” rule which couldn’t quite follow.

It seems BA no longer flies LHR-ICN but QR is so good that makes a fine alternative I think?

QF also fly MEL-DFW. Many people seem to think SYD is the only international airport in Australia
A map from the Great Circle Mapper - Great Circle Mapper

Your itinerary is a valid DONE4
https://cimg2.ibsrv.net/gimg/www.fly...c8601e335a.gif
I prefer my colour scheme over Mwenenzi's :)

You enter and leave each continent only once, so the rules on second entries/departures aren't relevant for your itinerary.
(But if you want to understand, I suggest reading the relevant part of the User Guide wiki)