Lowest Fare - Jinko Platform

The cheapest fares for a fixed route and date. Takes the same inputs as Flight Calendar but for one specific departure date (one-way, or with a return date for round-trip) returns up to ten itineraries sorted cheapest-first. The fixed-date counterpart of Flight Calendar — reach for it when the date is locked and you just want the cheapest options that day. Cache-backed; no live pricing. Each result includes an offer token you can pass into a live price check or directly into a trip.

Tool description (what the LLM sees)

Find the cheapest fares for a known origin, destination, and FIXED date using cached pricing. Takes the SAME inputs as flight_calendar, but for one specific departure date (one-way, or with a return date for round-trip) it returns up to ten itineraries sorted cheapest-first.

WHEN TO USE THIS TOOL:
- The user knows the route AND the exact date, and just wants the cheapest options that day.
- Examples: "Cheapest flight Paris → New York on June 15", "What's the lowest fare CDG→JFK on the 15th?".

WHEN TO USE flight_calendar / find_dates INSTEAD:
- The user is flexible on dates (a range or "when should I fly?") — use flight_calendar (full grid) or find_dates (curated date spread).

WHEN TO USE flight_search INSTEAD:
- The user is ready to book and needs live pricing + a bookable token. flight_search hits live pricing.

IMPORTANT:
  All dates MUST be in the future. Never use past dates.
  Origin and destination must be IATA city codes by default, or IATA airport codes if the user specifies them.
  Use trip_type="roundtrip" with a return date for a round-trip; otherwise "oneway".

Flow: lowest_fare → flight_search (price-check) → trip → book

Parameters

Name	Type	Required	Description
`origin`	`string`	Yes	Origin airport IATA code or city code (3 letters). Examples: “JFK”, “PAR”.
`destination`	`string`	Yes	Destination airport IATA code or city code (3 letters). Examples: “CDG”, “NRT”.
`trip_type`	`enum ("oneway" \| "roundtrip")`	Yes	Trip type: “oneway” or “roundtrip”.
`departure_dates`	`array<string>`	No	Specific departure dates (YYYY-MM-DD). Multiple dates searched with OR logic.
`departure_date_ranges`	`array<object>`	No	Departure date ranges for flexible search.
`return_dates`	`array<unknown>`	No	Specific return dates (YYYY-MM-DD) for round-trip flights.
`return_date_ranges`	`array<unknown>`	No	Return date ranges for flexible round-trip search.
`stay_days`	`integer`	No	Exact stay duration in days. Auto-calculates return date.
`stay_days_range`	`object`	No	Flexible stay duration range. Example: {min: 5, max: 10}
`stay_days_range.min`	`integer`	Yes	Minimum stay duration in days
`stay_days_range.max`	`integer`	Yes	Maximum stay duration in days
`direct_only`	`boolean`	No	Only return nonstop flights.
`cabin_class`	`enum ("economy" \| "premium_economy" \| "business" \| "first")`	No	Cabin class filter.
`max_total`	`number`	No	Maximum total price for the trip (canonical name). Preferred over max_price.
`max_price`	`number`	No	Deprecated alias for max_total. Use max_total instead.
`sort_by`	`enum ("lowest" \| "recommendation")`	No	Sort order. Default: “lowest” (cheapest first).
`currency`	`string`	No	ISO 4217 currency code. Defaults to “USD”.
`locale`	`string`	No	BCP 47 locale. Defaults to “en-US”.
`format`	`enum ("text" \| "json")`	No	Response format. “text” returns plain text for LLMs. “json” returns structured JSON.

​Parameters

Parameters