Data sources
Destinations and time zones
City names, alternate names, administrative codes and time zones are enriched with GeoNames data under CC BY. Geographic coverage also uses Natural Earth public-domain populated-place data.
Countries and currencies
ISO country metadata, translations and currency codes are generated from the ODbL-licensed mledoze/countries dataset.
Airports
Airport reference data comes from the public-domain OurAirports dataset. Operational status, schedules and airport suitability must be verified with carriers and aviation authorities.
Exchange rates
Optional comparisons use dated, indicative Frankfurter rates pinned to the European Central Bank provider. They are not card, cash or executable booking rates.
Prices
FarSerene labels estimates as editorial until unexpired supplier quotes cover hotels, activities and transport. It does not present an editorial estimate as a bookable total.
Our route methodology
Route studies compare hotel nights, number of bases, transfer hours, indicative transport, food and activity shares. The travel-friction score is an editorial comparison of handoffs and long-transfer burden, not a universal travel rating. Ranges are planning figures, not live prices; they are reviewed when route assumptions or source data change.