Post-mortem. Hipmunk closed in January 2020. The account below was written after the end, with the outcome known. Separately, a blind test with the evidence cut off at July 2018, before the end, returned: not called safe. How the blind test works.

Hipmunk

Defunct flight and hotel metasearch site, shut down by owner SAP Concur in 2020

Blind testEvidence cut off July 2018 · Ended January 2020 · Result: not called safe

What happened

Shutdown of Hipmunk announced/completed by SAP Concur (January 2020)

Why it did not hold

Hipmunk was a search interface with no inventory of its own, and Google proved anyone could rebuild that interface for free within a year.

Hipmunk let people search and compare flights and hotels in one place by pulling information from other travel websites. It was not hard to copy because Hipmunk did not own any airlines, hotels, or booking systems, only the search interface. Google Flights launched in 2011 and did the same thing better, and now AI travel assistants like ChatGPT can search flights and hotels directly without needing a separate website. The company's founders tried a different approach with Flight Penguin, a subscription tool for Chrome, to see if charging users directly instead of relying on commissions would have saved the original idea.

AI pressure: None apparent. Hipmunk dissolved January 2020, before LLM travel assistants existed, so no AI product ever had a live target to eat.

Bigger players: Google Flights. Google Flights launched in 2011, just 13 months after Hipmunk, and copied the same comparison layer at Google's distribution scale.

What protected it. None: Hipmunk ran on third-party data (Orbitz, then ITA Software) with no proprietary inventory or booking lock-in.

Timeline

2021-04-05Founders launch Flight Penguin, a separate subscription-based Chrome extension successor
2020-01-23Hipmunk permanently shut down by SAP Concur
2020-01-14Founders' offer to buy back Hipmunk brand from SAP Concur declined
2016-10-03Concur Technologies completes acquisition of Hipmunk
2016-09-13Concur announces agreement to acquire Hipmunk
2016-04-30Hipmunk raises $5.75M Series D, reported as a down round
2011-09-01Google Flights enters metasearch market, 13 months after Hipmunk launch
2010-08-17Hipmunk launches out of Y Combinator Summer 2010 batch

Also gone

Chegg closed 2026 Course Hero closed 2026 One Hour Translation / Blend was absorbed 2026

All 62 post-mortems →

This page is a post-mortem, not a live assessment, and it carries no band. The blind-test result is the only part made without knowledge of the outcome.