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post/flights/v1/price_graph2 credits

Find the cheapest day to fly. Returns the lowest price for each departure date across a date range, each tagged CHEAP / AVERAGE / EXPENSIVE, plus the single cheapest option. Set nights_min/nights_max for a return trip; omit them for one-way. One fast call.

Working example

Parameters

originrequired

destinationrequired

depart_daterequired

depart_date_endoptional

nights_minoptional

nights_maxoptional

adultsoptional

childrenoptional

infantsoptional

cabin_classoptional

currencyoptional

request preview

curl -X POST https://api.reefapi.com/flights/v1/price_graph \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"origin":"London","destination":"New York","depart_date":"2026-08-19","depart_date_end":"2026-08-26"}'

Hit Send to run this endpoint live.