Cheap flights MCP server

Which servers in the official MCP registry are Cheap flights's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-18

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Whose server it is

Registry namecom.piratefly/flight-dealsverified in the MCP registry

The registry name sits under piratefly.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-18

Stateanswerschecked 2026-10-18
Tools4
Server calls itselfpiratefly
Server version1.0.0
Protocol version2025-06-18

On 2026-10-18 the server answered initialize and tools/list without a sign-in. First answer in 207 ms.

Tools it offers4 tools · read 2026-10-18

flight_price_verdict
Answers "buy now or wait?" for a route, from 90 days of observed prices: verdict, percentile of today's cheapest fare against its own history, median, all-time low, and sample size. This is not a flight search: it judges a price. No other…
cheapest_months
The departure months ranked by observed median price for a route, with the median of each. Answers "when is it cheapest to go" with measured data instead of seasonal folklore.
when_to_book
How many days before departure this route has historically been cheapest, from our own observations. Answers "am I booking too early or too late?".
watched_routes
Lists the routes Piratefly observes daily and can therefore judge. Call this first, or after any answer saying a route is not watched, to find out what can be asked. Filter by origin and/or destination city (partial city name is fine) or…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "flight-deals": {
      "type": "http",
      "url": "https://piratefly.com/mcp"
    }
  }
}

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.