# whentofly Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## whentofly

Find the cheapest round-trip flights across flexible date windows with price context.

- Record: https://musedirectory.ai/connector/whentofly
- Category: Travel
- Developer: dimabalony (https://whentofly.io)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 1092ms, checked 2026-09-28T09:45:47Z
- Endpoint: https://whentofly.io/mcp?ch=mcp-registry
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T03:25:46Z)
- Source: Found in the official MCP Registry (io.github.dimabalony/whentofly) https://registry.modelcontextprotocol.io/v0/servers?search=io.github.dimabalony%2Fwhentofly

Searches economy and business flights across multi-month date ranges with minimum and maximum trip lengths. Resolves city and airport names, returns the cheapest options sorted by price, and supports one-way and round-trip searches with optional filters for transfers and cabin class.

Example request: "Find me the cheapest flights from New York to Europe anytime in September through November for 10 to 15 days."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use whentofly to help me. It is a free service with an MCP server at https://whentofly.io/mcp?ch=mcp-registry. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- search_locations: Resolve a city or airport name or code before searching flights. Returns typed values such as city:SHA to search every catalog airport in Shanghai or airport:SHA for Hongqiao only. Pass the selected value unchanged to search_flights. Ask the traveler when multiple results are pla
- search_flights: Find the cheapest round-trip across a FLEXIBLE multi-month date window with a min/max trip length — e.g. "10–15 days, anytime Sep–Nov". Search a broad date window rather than requiring the traveler to choose exact dates first. First call the search_locations MCP tool for city or 

Screening checks:
- MCP handshake: pass (Answered in 613ms)
- Domain against threat feeds (Cloudflare security DNS): pass (whentofly.io not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: warn (search_flights: Unusually long tool description)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)