I recently flew YVR-DFW-SFO-LHR-HEL all in one go. My luggage was checked through. Perhaps not surprisingly, I didn't manage to get it at HEL.

The trip was done on a mixture of airlines, AA from YVR-SFO, BA between SFO-LHR and AY (although on a BA flight number) between LHR-HEL.

I'm pretty resigned to losing it, but I feel there's something more I can do. Your advice is much appreciated.

I've lodged a claim with AY. They've given me a reference number and a site where you can see the status. I've also filled in a form with them detailing the content. As I've already bought some clothes because of this loss, they've given me €100 as 'a start'. Everytime I've asked them, they said there's nothing more they can do, apart from keep checking the site for any updates. AY have been very friendly about it (as with all the Finns I've met), but there's still nothing they can do.

Where the luggage was lost would be anyone's guess. Did the TSA blow it up or was it just lost at the mess that is LHR? (Although, SFO from BA and HEL departures both operate at T1, so I thought that'd make it slightly easier.)

Anyway, is there anything else I can do, any questions I can ask? When should I just ask AY to just compensate me (if at all possible) and not drag this out? Is AY ultimately responsible being the last airline of that trip (despite being on a BA flight number)? Can I check with the individual airports/airlines?

Thanks.

P.S. Yes, I've started my insurance procedures already.
P.P.S. To those that have been reading my trip report. I haven't written much because some of the it is in my computer, and without my adaptor, I don't want to use any more power unless I absolutely have to. I'll complete it.