*This benefit is not available on British Airways' 'Hand Baggage Only/Basic' fares.
 

If I purchase basic fare tickets on a code share ie Finnair but flying on BA metal with Silver (BA) and Saphire (One World) status...how does the caveat in the title apply? If I purchase a BA ticket it is clear I do not have any of the benefits.

benefits in issue
baggage
seat selection
boarding

appears lounge access remains intact

I think you need to elaborate a bit regarding which benefits this statement is referring to? - Otherwise it will be difficult to help.

That statement very much seems to suggest the conditions are exactly the same as the underlying ones for the BA ticket - i.e. you don't get a checked luggage allowance (although in practice BA will let you check a piece that meets the carry-on limits at bases plus the more switched on outstations), seat selection is only by status and lounge access is available.

However, as has been said, even just a little more detail would help enormously.

Thank you for amending your initial post to add in some specifics.

This is the thread you need to look at (and to summarise, BA takes the hardest line here, even on codeshares that land in their court) for baggage but these fares allow seat selection for most status passengers in most scenarios.
https://www.flyertalk.com/forum/brit...announced.html

and this is the chart you need (hat tip @ianwall ). Just follow the zeros. The chart is poorly labelled, but in essence go down the first column for your marketing flight code airline. Then go rightwards to find the operator / metal for your status.

https://cimg2.ibsrv.net/gimg/www.fly...d7f465d517.jpg

The table could also be summarised as "avoid BA (either operating or marketing" at all cost! Unfortunately, of course, if BAEC, choosing BA has some advantages that the others don't but for checked luggage purposes, it is the worst possible option.

well, only if you have to check luggage!

A caveat to that would be where the Basic fare on BA is not available on the other carrier. For example, I have purchased HBO fares on BA operated by IB, where the fare was not available on IB, but I could still get the bag allowance as a OW Sapphire.

Well the table above suggests that you should not have though. May be the table is not up to date?

What is the case if I travel with family..I buy an economy ticket for myself and super economy no baggage for the rest of the family. Silver status allows my family flying with me to have the advantage of my 2 bag limit. This does not seem to be covered.

I don't know the official version here,but I'm near certain that regardless of the machinations, on BA operated service anyone on a Basic ticket = zero checked bags. Regardless of status, or booking composition or codeshare. And I don't think you can mix a Basic and non Basic fare on the same booking anyway, certainly not via conventional channels. The exception is on those flights were BA sends out an email asking people to check in bags, but that would be on shorthaul rather than longhaul. In a way I don't see the issue: you're only buy these tickets if you don't have checked bags, if you do have checked bags then BA will sell you a ticket for that. And if you don't like that, there are other airlines with different approaches. BA's policies are rather rigid in this area compared to (e.g.) AA, but they are logically coherent to my mind.

What I am seeing anecdotally is the non baggage fare being offered is the same as the previous BA economy fare ... I am paying more this year for the same ticket I purchased last year and received a baggage allowance on.

On a specific route, I could see this being an issue. More generally, I doubt it. The HBO fares are intended as a fightback against Norwegian, Wow and to some extent Icelandair who have been offering very competitive lead-in fares, which end up well placed on internet search machines, but then end up somewhat higher when the add-ons are added back on. Overall to get to California on an A380 for £215 return (BCN-LHR-SFO) is to my mind extraordinary and probably unsustainable value for money, there's no doubt that on these routes the fares have never been lower. Fares have been dragged down to a very low level.

Since AA does have a different take on the baggage fees and their fares are just as cheap as BA then you have an alternative there. Clearly there are games you can play, such as booking yourself a Standard ticket, getting the full status baggage and sending the rest of your party in Basic is one such tactic albeit on 2 PNRs (so losing free seat selection)