> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dev.gojinko.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Lowest Fare
> Cheapest fares for a fixed route + date: up to ten itineraries, cheapest first
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.
```text theme={null}
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 → checkout
```
## 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` | No | Specific departure dates (YYYY-MM-DD). Multiple dates searched with OR logic. |
| `departure_date_ranges` | `array