Hi. I will be flying on 19:25 flight out of LHR to VIE on OS. My schedule in London ends a bit earlier (but not early enough to actually do something useful), so I'm considering arriving early to Heathrow and spending the extra time in the lounge. The trouble is that I will have checked luggage. Any idea when does Austrian open their check-in? Also, LH's website states they offer self-service bag drop at LHR and I imagine that also extends to Austrian - if so, would that help with checking the bag early? I'm talking about somewhere between 4 and 3 hours before the departure.

On top of that, I'll also welcome any advice on which lounge to choose. The general consensus on the internet seems to be that United lounge is the best, so I'm considering starting there around 16:30 for an hour or so, before moving to LH lounge for the remaining time. I don't mind the walk from T2B to T2A (which as I understand should be possible without any problems, just takes a bit long). Alternatively I'm considering Air Canada lounge instead of United as I like it better based on pictures in reviews, but I'm not sure how long it stays open, since *A lounge finder doesn't list its hours.

Thanks