Howl and Sophie's reunion near the end. It's a lovely little moment, with a 'spin of love' and everything, and shows very clearly that despite their frequent bickering, they dolove each other.
Princess Beatrice and Prince Justin ending up a perfect match for eachother. She laments her lack of beauty, he says that is not what he seeks. He laments the fact that he is Prince Justin - she says she loves him anyway.
Flower and Abdullah end up living in Ingary as ambassadors - not as ridiculously wealthy nobles, but in a cottage of their own, with a beautiful garden like they both would have wanted, far away from Flower's JerkassOverprotective Dad.