OW RTW
 

Does any particular Embarkation point offer an attractive fare, particularly in Premium Cabins?

Tokyo and Oslo are two of the cheapest places to start a DONE

Thanks for this. Where can I check the fares ex Tokyo and Oslo please?

MPM used to be a good starting point

Expert Flyer, https://www.expertflyer.com/ . It's a paid service. You can also just put together a dummy itinerary using the Oneworld online tool - https://rtw.oneworld.com/rtw/ - but be prepared for a rather frustrating experience. Keep it as simple as possible or it will crash on you.

Well indeed. And so did CAI KRT MNL SEL JNB WDH at various points points over the last 20 years for various reasons. Not very useful to the OP now though.

Experfflyer is 100 per year. A pocket change if u book a cheaper rtw ticket.

Expertflyer is one place I know where you can check this. It is a subscription service but offers a free trail for few days.

ex-TYO ex-OSL
DONE3 US$5866 US$6421
DONE4 US$6976 US$7103
DONE5 US8002 US$8112

Hope this helps

Don't forget MRU!!

Keep in mind that EF can only show you the base fare. Taxes and airline (e.g., fuel) surcharges are extra and will depend on the specifics of your route. Also, the airline that tickets will charge higher or lower surcharges. Also be aware that if stopping in the U.K. for more than 24 hours, you will have to pay the APD, which is 172 GBP when flying outside of Europe.