Kiwi.com - Find and book the best low-cost flights all around the world
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Flymble LIVE - Book a flight for 1/10 of the cost upfront.
Event Hunt - Startups and Tech Events Curated By Locals
LuckyTrip - A trip in one tap. The easiest way to find great trips.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets