# Flights from Porto (OPO) to Karlsruhe/Baden-Baden (FKB)

1 direct, 23 routes with 1 stop, 2493 with 2 stops. Straight-line distance 1557 km.

## Direct

Ryanair flies direct, about 1559 km.

## Shortest routes

- OPO → FKB · 1559 km · about 160 min · 0 stops
- OPO → MAD → FKB · 1739 km · about 294 min · 1 stop
- OPO → NCE → FKB · 1904 km · about 291 min · 1 stop
- OPO → VLC → FKB · 1959 km · about 315 min · 1 stop
- OPO → STN → FKB · 2020 km · about 320 min · 1 stop
- OPO → PMI → FKB · 2096 km · about 325 min · 1 stop
- OPO → ALC → FKB · 2125 km · about 330 min · 1 stop
- OPO → SVQ → FKB · 2180 km · about 335 min · 1 stop

## How to query this

- JSON: https://travel.buy-it.gr/api/v1/routes/OPO/FKB
- This page: https://travel.buy-it.gr/api/v1/routes/OPO/FKB.md
- HTML, English: https://travel.buy-it.gr/en/flights/OPO-FKB
- All routes: https://travel.buy-it.gr/api/search?from=OPO&to=FKB&maxStops=2
- Operating days for one leg: https://travel.buy-it.gr/api/leg?from=OPO&to=FKB
- Price a path on one date: https://travel.buy-it.gr/api/price?path=OPO,FKB&date=2026-10-09

Replace airport codes in any of those URLs. `path` is comma-separated IATA codes, 2 to 5 airports. `date` is YYYY-MM-DD. `carriers` is optional, legs joined by `|` and airlines inside a leg joined by `.`, for example `FR|LO`.

The first flight must leave on `date`. Each following flight may leave that same day or the next day, and must depart at least 90 minutes after the previous flight lands. A response with `partial: true` on a calendar lists days a source has seen. It does not prove the other days are empty.

No API key. Responses are JSON unless the URL ends in `.md`. Prices are euros. `total: null` means no fare was found for the first flight on that date.