The oneworld explorer does not allow backtracking, you can go west or east.
The flight vom Haneda to singapore and back to narita is not allowed in the ticket

That is incorrect. The backtracking rule applies to backtracking between TC zones. You can zigzag and backtrack within continents with a few exceptions, e.g. Hawaii and mainland North America. HND-SIN-NRT is perfectly okay.

married segments
 

Do married segment restrictions apply (as I have perhaps mistakenly always thought) only to connections (<24h) or do they also affect stopovers (24h> ) ?

I'm building a DONE4 for next year. I want AKL-per-SYD. Looking on ITA at the two segments separtely, I see D availability on both. Putting them together, I get 'no flights found' -- even if I change to a multi-day stop at PER. Maybe a glitch in the ITA Matrix? (Any other free utility that allows specifying a fare bucket in a search?)

TIA

I am defintenly going to go mad before I start this trip......

DONE 4 already ticketed but wanted to fly SYD-PER and apparently no D class on QF - however, on the last flight of the day there is an FJ code share (FJ 5252) which does have D so asked to be put on that and it was confirmed.

Sent down to fares dept who say that as I am changing from a QF flight number to a FJ flight number there is a change fee.

No change of routing just changing the date and going from a QF flight number to a FJ one

Anyone see a reason for a fee ?

My understanding is that change of carrier does get hit with the fee.

so the obvious question is why and where does it say that in the rules ?

Isn't the whole point of a one world ticket that you can use one world carriers ?

And when my AKL - JFK changed from QF3 to the AA code share there was no fee charged

It doesn't and I share your frustration. Others, however, seem to think the rules are clear. In my view, this is another example of where that comes unstuck.

I may have missed it but who's your ticketing carrier?

BA are the ticketing carrier (probably for the last time on a ticket like this!)

Been ticketed? International flight before or after the SYD-PER FJ5252 ?
Would be surprised if FJ have AU domestic traffic rights for an standalone AU domestic flight,

AKL PER is a new route from 8 Dec 2025. Closely linked to QF's AKL-JFK-AKL- QF3/QF4 flight
--> https://www.qantasnewsroom.com.au/me...for-customers/

Yes, fair point to raise.... (and ticket already issued some time ago - just trying to change a date to suit my schedule - currently ticketed SYD-PER on a next day QF flight)

I arrive into SYD on QF at 1420 from JNB so would like to fly out to PER the same day. What's annoying is that EF shows lots of D in many QF flights from SYD - PER but BA apparently says there are none - so was surprised FJ had D but I guess that's the quirk. EF shows the below hence why I went for it.


https://cimg1.ibsrv.net/gimg/www.fly...285562ba64.jpg

AA does not charge a fee if the ticketed points remain the same. In fact, this was quoted to me by the AAgent last time I had to change a flight, "You're not changing cities, so there's no change fee." The itinerary still had to be sent to the rate desk to check for changes in taxes and carrier surcharges.

But from above - a date change should not require the ticket to be re-issued (only revalidated) so there should be no re-price or need to check for changes in taxes etc

Changing the marketing carrier on a route can definitely incur a difference in fees. I had a schedule change where I was flying MEL PER on AA codeshare but it cancelled.. so I was rebooked on QF prime flight and I got a small refund.

Taxes can change with time, so they always want to check. Also, the agents on the desk don't deal with pricing issues, so they always need to send it to the rate desk to check.