Most (some?) airlines will just suck up the cost though in those extrodinary circumstances (bad weather for example), as a general policy to keep their customers sane.
Not sure if they'll give you direct compensation, but most will pay for food/drink, some place to stay overnight if need be and rebook your flight for free too if it's cancelled outright.
What airlines do you fly with? Comp for hotel and food is paid but the EU comp is really hard to get. There's a reason that so many services specialise on getting that money for passengers for a fee. It's not just Ryanair and Easyjet making it hard to claim. Haven't heard of a single case where reasons as that one led to a payout.
> Most (some?) airlines will just suck up the cost though in those extrodinary circumstances (bad weather for example), as a general policy to keep their customers sane