I have just finished where'd you go bernadette, it was a great read, and also not sure what to read next. Have you read Tigers in Red Weather? I read that immediately before Bernadette and really enjoyed it, maybe not quite as good but found it a page turner so would be good for a flight. You might also like A Visit from the Goon Squad which plays with the stucture of the novel a bit like Bernadette and is another easy read.
I've just downloaded a sample of Gone Girl which I think is more of a thriller but supposed to be a page turner. Also downloaded samples of Wife 22 and The Dinner, not read the samples or had personal recommendations for these but hoping one of the will fill the Bernadette- sized hole in my life!