That's a good option - was a steward for a few years before I started flight training, and while it didn't contribute much to my finances, I ended up being mates with a few captains/FOs whose advice was invaluable during training - plus, as they say, it's not (only) what you know, it's who you know... Also, because of crew work patterns, you will end up having days off that you can then use to do your PPL or distance-learning ATPLs etc.
Looked recently at airport jobs myself, but the money is usually well below what you would earn as cabin crew - for instance, a temporary flight dispatcher gets paid hardly more than the minimum wage...