About Flight Signal
Flight Signal is an open price-history observatory for flights from London. Prices have been observed daily by our own tracker since 10 July 2026 — 13,205 observations across 122 destinations so far — and scored against real baselines, not marketing "was" prices.
Who's behind it
Flight Signal is built and run by Param Bahia. It started as a personal tool to stop overpaying for flights from London and grew into an open dataset: every fare we observe is committed to a version-controlled history, and the aggregate index is published openly for anyone to cite.
What makes the data trustworthy
- First-party. We observe the prices ourselves, daily. It's not resold aggregator data.
- Method-stated. Every "good price" call shows the median, quartiles and sample size it's based on — see the methodology.
- Honest by design. No fabricated discounts, no auto-booking, no scraping, and unconventional fares are clearly labelled.
How it works for you
Tell us where you'd fly from London and Flight Signal watches those fares around the clock, scoring every drop against its own history. When a fare is genuinely exceptional, it pings your phone — with the price, the dates, why it's a deal, and a booking link. You always decide; we never book for you.
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