Methodology · updated 29 July 2026
How the departure board is built
Somewhere is a fare-discovery tool. It observes public flight-search results, keeps a recent snapshot, and gives each price the context of what that route normally costs.
Sweep flexible dates
For each route, Somewhere checks outbound and return date grids across roughly six months and combines trips lasting 2–10 nights.
Verify promising trips
The cheapest date pairs are opened as exact round trips. Those verified prices—not one-way teaser fares—are what reach the public board.
Build route context
Each successful run updates a rolling median for that origin–destination pair. This keeps Barcelona from being judged against a completely different route.
Match real availability
Signed-in travelers can paint free days. Somewhere keeps only trips that fit those windows and can intersect the free days of a friend group.
What “cheap” means here
A low number alone is useful, so every discovery surface is sorted by absolute round-trip price. Deal labels add route context: the observed fare is compared with an exponentially weighted median of successful scrape runs. Distance-aware price bands and a hard ceiling stop implausible multi-leg fares from looking attractive.
Freshness and coverage
Popular routes are normally checked every 24 hours, mid-tier routes every 72 hours, and long-tail routes every 168 hours. Public route pages have a stricter gate: they need repeated successful checks, a route baseline, at least three fares in the latest successful run, and a current future trip. Stale or cold routes are kept out of the search index.
Currency and price changes
Searches are pinned to the Netherlands and EUR, and non-euro fares are rejected before saving. Prices are snapshots, not inventory held by Somewhere. Airlines and booking agents can change price, availability, baggage rules, or fees before checkout.
What Somewhere is not
Somewhere does not sell tickets, guarantee a fare, predict future airline prices, or rank a booking agent. A booking button opens a flight-search result where the traveler verifies the final itinerary and price.