Does AA or AS fly non stop SFO-ANC-SEA at the dates you want to travel?. Need to list all individual flights.
The error message the online tool display is not always accurate compared to the actual error. Can be an error somewhere.

From wikipedia for ANC [wikipedia is not always 100% accurate]
https://cimg9.ibsrv.net/gimg/www.fly...d90dc82bf8.jpg

The rule was changed slightly some time ago (while AA was flying to Fairbanks in addition to Anchorage), to be:
A couple of points here:

• On FlyerTalk "o" generally means Stopover (=more than 24hrs between flights) and "x" means Transit (24hrs or less between flights); the word layover is not used
• Your suggested itinerary has a couple problems, to do with the re-visits to Tokyo:
  • Rule ​​​​​4(d) Travel may not be via the point of origin.
  • Rule 4(f) Only one international departure and one international arrival from/to the country of origin permitted.

Ah thanks, I was using the pdf from the website which must be slightly out of date, are you using rules from Expert Flyer instead, or something else?

And good point about the origin, I was used to planning ex OSL which allows the travel from Tokyo. That being said, the OP only needs 40k miles in total, so dropping SIN from the itinerary would still be fine and hopefully solve the issue of 4d and 4f!
​​​​​​I'm surprised that layover isn't used as a term, as that's what the GDS's use for <24 hours for between international flights I thought?

Current rules are available via this page:

https://www.oneworld.com/round-the-world

Open "What Are The Round The World Rules? +"

And click the link for oneworld Explorer

Hi aaaxton
here are my answers to your questions:

1. Yes, your current itinerary is valid, In particular your flights to and from Alaska. As has been pointed out, the online tool is very buggy.
2. I've never heard of QR ticketing a RTW, under any circumstances. I tried once and failed.
3. I have a few suggestions for you.

I use the link serfty posted.

Re layover - I've no idea what GDSs use. The published rules (i.e. the pdf documents on the web site) have always(?) used the term transit.

ETA:
I checked back through the old versions of the rules which I have kept, and the change from ANC to The State of Alaska was made in April 2021, which is when AS joined the alliance; makes sense.
At the same time the change was made regarding only one transcontinental flight allowed - from lists of East Coast and West Coast cities to lists of East Coast and West Coast states.

Thank you all! Glad to know the itinerary is vaild. I guess I'd better call JL or CX for ticketing it.

Based on the chart on ba.com, QR, JL and AY are all double-plus good, so sadly JFK-HKG-TYO (CX then JL I guess?) would earn less new TP than JFK-TYO (JL metal).
Can't find any direct flights between JFK and ANC in May so I'm afraid thats not an option for me.
MNL seems like a good idea.
DONE4 is a bit overkill for my goal, but still worth looking into it i think. Anyway thank you so much for your suggestions!

Thank you for your reminder! Google flight shows some direct flights in May (AS269 SFO-ANC and AS134 ANC-SEA) so this part should work. But sadly no direct flights to/from JFK.

I have also found myself digesting the information in this thread over the past few days based on the changes to the BAEC program - I can certainly see some RTW trips in my future - and would like to thank all the previous posters, and especially pandaperth for this great source of information.

As such JFK-HKG-TYO is slightly worse (if we are talking just about BA new tier points), as the long HKG-JFK flight only gives 25% earning (as opposed to 50% earning on the shorter HND-JFK flight).

JFK-HKG-CMB-TYO is a good idea though - even with the 25% earning on CX for the JFK/HKG flight this gives around 4880 BA new tier points, compared to 3400 for the HND-JFK routing.

I was also curious about the JFK-ANC-JFK routing - in that it doesn't seem to count as a transcontinental flight. If that is the case then something like JFK-ANC-JFK-SEA (all on AS) is indeed a good base to start from for the US sectors (if booked during the summer season when there is a direct flight between JFK and ANC).

According to EF the AS non-stop service JFK-ANC-JFK will run 4 days a week (MTTuSa) from 16-Jun to 17-Aug

My Perth TA ticketed two ex-CAI DONEx for me on QR during the first couple of go rounds.
When I was actively wandering
Fred

Ah, that's' good to hear Fred. I tried, and failed, to get QR direct to ticket for me (an ex-KHI DGLOB34 with KHI-DOH as the first segment)
And good to hear from you too :D
For interest, how much did the Perth TA charge you for the service, and how did you go when/if you needed to make changes?

Hi aaaxton
I've been playing around with you proposed itinerary (I have lots of time on my hands :D)
The Alaska flights are definitely what is causing your itinerary to fail with the online tool
When I enter the following flight segments:
...
SFO-ANC
ANC-SEA
...
I get the same error as you got.
Changing ANC-SEA to PDX-SEA gives me an itinerary that can be completed, and priced up
It is of course not what you want, and adds an extra segment to the itinerary (the surface segment ANC-PDX)
But at least it gives you an itinerary you can play with while you explore your options
And when the times comes, and you change PDX back to ANC, you'll have a valid itinerary that can be ticketed by a travel agent or direct with an airline.

Thank you pandaperth :D I'm playing around with my choices on google flights now, but the online tool is definitely more convenient. A (might be silly) question: are flights listed on the online tool guarante D seat availabilities? or i can only know when i hit the book button?

Sorry for slow reply - some of my replies have to be reviewed as this account is new here.

Added introductory sentence to Wikipost:

One World Explorer is cash-only fares. One cannot buy such fares with points, regardless of the program in which one has points.