Koskamo

Weekend Flights MCP

An MCP server that provides AI agents with access to live weekend flight price data, including cheapest round-trip prices for specific routes and origins, with support for various filters like cabin class and passenger count.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Weekend Flights MCP logo, by Weekend FlightsVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by Weekend Flights
MCP endpoint (Streamable HTTP)
https://weekendflights.app/mcp
Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (3)

3 of 3 have a description · 0 of 3 declare behavior hints · 2 of 2 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to weekendflights.app ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Find the cheapest round-trip flight for a specific origin-destination pair over the next 12 months
  • Identify the cheapest weekend destinations from a single origin
  • Search for flights with specific filters like cabin class, stops, and time windows

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: app.weekendflights/weekendflights@1.0.0Project website

Protocol and capabilities

Server
weekendflights 0.1.0
MCP protocol negotiated in check
2025-06-18
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

weekendflights.app prices the cheapest round trip for every weekend of the next 12 months on any airport pair. weekend_prices answers from the cache at once and searches the unpriced weekends live during the call, like a page visit; allow up to a minute for a route nobody has opened yet. Every answer carries "url" (the human page). The tools take every filter the route page has: trip shape (combo), cabin, stops, passengers, departure and return time windows, currency. Defaults are one adult, economy, any stops, Friday-Sunday, native currency. Present prices as current and say that the booking site shows the final price. Link the url. A status of "not_priced_yet" after a call means the live search did not finish or was capped; the "note" says why and whether to call again.

Tools

3 advertised

list_origins — List departure airports with a cached weekend calendar
Advertised by the server during the last successful anonymous check.

Returns the departure airports (IATA) that have at least one priced weekend calendar, with the count of priced destinations per origin. Start here to learn what cheapest_weekends can answer at once. weekend_prices works for any airport pair and searches live when needed.

list_origins input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
weekend_prices — Weekend round-trip prices for one route
Advertised by the server during the last successful anonymous check.

Every weekend of the next 12 months for one origin-destination pair, with the cheapest round-trip price per weekend Prices answer at once; weekends not priced yet are searched live during the call, the way a page visit searches them (usually 10-40 s, at most ~55 s). If the search does not finish, the answer says which weekends are still open and to call again. Takes every filter the route page has: trip shape (combo), cabin, stops, passengers, departure and return time windows, currency. Free: fri-sun, economy, any stops, any passenger mix, no time window. Pro session cookie: other combos, other cabins, time windows.

weekend_prices input schema
{
  "type": "object",
  "required": [
    "origin",
    "dest"
  ],
  "properties": {
    "dest": {
      "type": "string",
      "maxLength": 3,
      "minLength": 3,
      "description": "Arrival airport IATA code, e.g. \"BCN\"."
    },
    "cabin": {
      "enum": [
        "economy",
        "premium-economy",
        "business",
        "first"
      ],
      "type": "string",
      "description": "Default \"economy\" (free). Other cabins need a Pro session cookie."
    },
    "combo": {
      "enum": [
        "mon-mon",
        "mon-tue",
        "mon-wed",
        "mon-thu",
        "mon-fri",
        "mon-sat",
        "mon-sun",
        "tue-tue",
        "tue-wed",
        "tue-thu",
        "tue-fri",
        "tue-sat",
        "tue-sun",
        "tue-mon",
        "wed-wed",
        "wed-thu",
        "wed-fri",
        "wed-sat",
        "wed-sun",
        "wed-mon",
        "wed-tue",
        "thu-thu",
        "thu-fri",
        "thu-sat",
        "thu-sun",
        "thu-mon",
        "thu-tue",
        "thu-wed",
        "fri-fri",
        "fri-sat",
        "fri-sun",
        "fri-mon",
        "fri-tue",
        "fri-wed",
        "fri-thu",
        "sat-sat",
        "sat-sun",
        "sat-mon",
        "sat-tue",
        "sat-wed",
        "sat-thu",
        "sat-fri",
        "sun-sun",
        "sun-mon",
        "sun-tue",
        "sun-wed",
        "sun-thu",
        "sun-fri",
        "sun-sat"
      ],
      "type": "string",
      "description": "Trip shape: out day and back day as \"{out}-{back}\" with 3-letter days (\"tue-thu\"); the same day twice is a day trip. Default \"fri-sun\" (free). Other shapes need a Pro session cookie."
    },
    "stops": {
      "enum": [
        "any",
        "nonstop"
      ],
      "type": "string",
      "description": "\"any\" (default) or \"nonstop\". Free."
    },
    "adults": {
      "type": "integer",
      "maximum": 9,
      "minimum": 1,
      "description": "Default 1. Free. At most 9 travellers in total."
    },
    "origin": {
      "type": "string",
      "maxLength": 3,
      "minLength": 3,
      "description": "Departure airport IATA code, e.g. \"ZRH\"."
    },
    "out_to": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Latest outbound departure, \"HH:MM\". Pro."
    },
    "ret_to": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Latest return departure, \"HH:MM\". Pro."
    },
    "infants": {
      "type": "integer",
      "maximum": 9,
      "minimum": 0,
      "description": "Under 2. Default 0. Free."
    },
    "children": {
      "type": "integer",
      "maximum": 9,
      "minimum": 0,
      "description": "Ages 2-11. Default 0. Free."
    },
    "currency": {
      "type": "string",
      "maxLength": 3,
      "minLength": 3,
      "description": "ISO 4217 code. Default: the native currency of the origin (ZRH → CHF, BCN → EUR)."
    },
    "out_from": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Earliest outbound departure, \"HH:MM\" local. Pro. Cached only for weekends whose flight detail is stored."
    },
    "ret_from": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Earliest return departure, \"HH:MM\". Pro."
    }
  },
  "additionalProperties": false
}
cheapest_weekends — Cheapest cached weekends from one origin
Advertised by the server during the last successful anonymous check.

The cheapest weekends from one origin across every destination that has a calendar under these filters, sorted by price. Optional month filter (yyyy-mm). Takes the same filters as weekend_prices. This tool reads what is already priced; it does not search every destination. A destination that is absent can be priced with one weekend_prices call for that pair. Pro only: this tool is Anywhere (every destination from one origin). Without Pro it answers pro_required with the Anywhere page url. One route at a time is free with weekend_prices.

cheapest_weekends input schema
{
  "type": "object",
  "required": [
    "origin"
  ],
  "properties": {
    "cabin": {
      "enum": [
        "economy",
        "premium-economy",
        "business",
        "first"
      ],
      "type": "string",
      "description": "Default \"economy\"."
    },
    "combo": {
      "enum": [
        "mon-mon",
        "mon-tue",
        "mon-wed",
        "mon-thu",
        "mon-fri",
        "mon-sat",
        "mon-sun",
        "tue-tue",
        "tue-wed",
        "tue-thu",
        "tue-fri",
        "tue-sat",
        "tue-sun",
        "tue-mon",
        "wed-wed",
        "wed-thu",
        "wed-fri",
        "wed-sat",
        "wed-sun",
        "wed-mon",
        "wed-tue",
        "thu-thu",
        "thu-fri",
        "thu-sat",
        "thu-sun",
        "thu-mon",
        "thu-tue",
        "thu-wed",
        "fri-fri",
        "fri-sat",
        "fri-sun",
        "fri-mon",
        "fri-tue",
        "fri-wed",
        "fri-thu",
        "sat-sat",
        "sat-sun",
        "sat-mon",
        "sat-tue",
        "sat-wed",
        "sat-thu",
        "sat-fri",
        "sun-sun",
        "sun-mon",
        "sun-tue",
        "sun-wed",
        "sun-thu",
        "sun-fri",
        "sun-sat"
      ],
      "type": "string",
      "description": "Trip shape. Default \"fri-sun\"."
    },
    "limit": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1,
      "description": "How many weekends to return. Default 10."
    },
    "month": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}$",
      "description": "Limit to one month, format yyyy-mm."
    },
    "stops": {
      "enum": [
        "any",
        "nonstop"
      ],
      "type": "string",
      "description": "\"any\" (default) or \"nonstop\"."
    },
    "adults": {
      "type": "integer",
      "maximum": 9,
      "minimum": 1,
      "description": "Default 1."
    },
    "origin": {
      "type": "string",
      "maxLength": 3,
      "minLength": 3,
      "description": "Departure airport IATA code, e.g. \"ZRH\"."
    },
    "out_to": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Latest outbound departure, \"HH:MM\"."
    },
    "ret_to": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Latest return departure, \"HH:MM\"."
    },
    "infants": {
      "type": "integer",
      "maximum": 9,
      "minimum": 0,
      "description": "Default 0."
    },
    "children": {
      "type": "integer",
      "maximum": 9,
      "minimum": 0,
      "description": "Default 0."
    },
    "currency": {
      "type": "string",
      "maxLength": 3,
      "minLength": 3,
      "description": "ISO 4217 code. Default: the native currency of the origin."
    },
    "out_from": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Earliest outbound departure, \"HH:MM\"."
    },
    "ret_from": {
      "type": "string",
      "pattern": "^\\d{1,2}:\\d{2}$",
      "description": "Earliest return departure, \"HH:MM\"."
    }
  },
  "additionalProperties": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
555 ms
95th percentile latency
555 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 555 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http weekend-flights-mcp https://weekendflights.app/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add weekend-flights-mcp --url https://weekendflights.app/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable weekend-flights-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "weekend-flights-mcp": {
      "url": "https://weekendflights.app/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "weekend-flights-mcp": {
      "type": "streamableHttp",
      "url": "https://weekendflights.app/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start weekend-flights-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "weekend-flights-mcp": {
      "type": "http",
      "url": "https://weekendflights.app/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http weekend-flights-mcp https://weekendflights.app/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://weekendflights.app/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "weekend-flights-mcp": {
      "serverUrl": "https://weekendflights.app/mcp"
    }
  }
}

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