Hipmunk’s founders are building a successor to their now-defunct flight search service. The startup was acquired by SAP-owned travel and expense platform Concur in 2016, and its CEO Adam Goldstein departed in 2018. But Goldstein told me he and his co-founder Steve Huffman (also co-founder and CEO of Reddit) were still disappointed when Concur shut … Continue reading Hipmunk’s founders launch Flight Penguin to bring back Hipmunk-style flight search