A boy builds an airplane from a vacuum cleaner and flies off to rescue his dad. I think it’s to get him home for Christmas. On the way back home they stop off to buy presents for each other, and they buy the boy’s mom some perfume from Paris.
Addition: It’s a picture book – a fairly short story on large, colourful pages. I read it in the 1970s and it seemed of its time. Borrowed from my (then) local library, in fact. Would it help to mention I’m in the UK?