Hi all
i'm trying to fly 2 people from SEA-ZRH. Trying to find the cheapest tickets and looking to the FT community for a strategy how to best approach this as usually I am constrained by dates. Duration for the trip will be around 2 weeks +/- a few days and I only want them to have one stop. Alliance doesn't matter.

Is the best way to search a query like this is via Kayak/Hipmonk/etc? Are there any other better ways to find the best combination?

Many thanks in advance