Whitespace.
See who already built your idea — and the space they left open.

CLUSTER ACROSS-COMPARES-FLIGHTS · 5 ENTRIES · EARLIEST ENTRY 2009-02-28

Travel price comparison apps

These are travel search apps that compare flights, hotels, and rental cars across multiple providers, with some also tracking price changes and building itineraries. The cluster's dated history is too thin to read a shape from, as only four dated entries exist before the index start; it predates the index or its members are undated. Traction leaders include momondo, Skyscanner, and KAYAK, each currently showing 0 stars on activity signal.

Entry timeline

ENTRY TIMELINE

FEB 2009: 1FEB 2011: 1MAY 2011: 1OCT 2014: 1AUG 2026: 1
FEB 2009AUG 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 hand-coded · 4 unlabelled

Operator · 2 commercial · 2 enterprise · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 5 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01momondo: Flights, Hotels, Cars0★1 molivecommercialTravel search app that compares flights, hotels, and car rentals across sites, tracks price changes, and builds itineraries within a budget.
  2. 02Skyscanner Flights & Travel0★1 moliveenterpriseTravel search app that compares flight, hotel, and rental car prices across providers to help users find the cheapest options.
  3. 03KAYAK: Flights, Hotels & Cars0★1 molivehand-codedenterpriseTravel app that compares flights, hotels, and rental cars across sites and tracks prices for trip planning.
  4. 04Cheapflights: Flights & Hotels0★26 dayslivecommercialTravel search app that compares flights, hotels, and car rentals across many sites, tracks prices, and manages itineraries.
  5. 05hauliday0★2 moliveApp that compares travel product prices using crowd-sourced data, helping travelers determine cost and availability abroad.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.