If you're flying with another person, you can try booking the window and aisle, then hope the middle doesn't get filled. If someone does take the middle seat, t

If you're flying with another person, you can try booking the window and aisle, then hope the middle doesn't get filled. If someone does take the middle seat, they're usually willing to trade so you and your partner can sit next to each other. This has worked for me on several international flights.