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TAXI in BARCELONA
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Price of a tour according to official rates
** From the port OR from the airport to any point in the city
>> 4.6 euro + 1.21 euro/km (working days until 8:00 p.m.)
>> 4.6 euro + 1.45 euro/km (weekend and from 8:00 p.m.)
(it is enough that you calculate on Google maps the distance to travel by taxi and know the approximate cost)
>> Taxi Port >> Airport 39
Of course you can!!!!
It is enough to grab a taxi anywhere in Barcelona, say destination and pay at the end.
Conversely, you will find taxis in Montjuic as well as you can easily call for a taxi there.
Taxi fares are the same. Montjuic mountain could be different because there are a lot of facilities (museums, stadiums and so) and no buildings for houses.... but definitely the same for taxis.
In this thread you have more information about fares