This site rocks! I recently discovered it. Perfect for nomads and lifestyle travelers who travel on one-way tickets to find the best possible routing which can't be found with most other flight search engines. They also have a guarantee; if you miss your connection they'll help you re-route. Not something you can usually get when booking your route with multiple airlines.

Kiwi has a groundbreaking Virtual Interlining technology and a focus on exceptional customer service. The unique flight search algorithm combines flights from airlines who do not normally collaborate onto a single itinerary, often resulting in significant savings.