#9 Madrid, Spain – $3.59 / km
The Adolfo Suárez Madrid–Barajas Airport is the largest and the busiest airport in Spain, which explains why the airport taxi business is a booming income generator for taxi industry. Add to the fact that taxi fare in this particular place is rated at $3.59 / km, a ride from the Adolfo Suarez airport to just about anywhere in Madrid will really hurt your wallet if you did not make the necessary preparations.
#8 London, UK – $3.67 / km
The City of London, UK is serviced by a system of airports, commonly known as the Airports of London. This includes six international airports: Heathrow, Gatwick, Stansted, Luton, City Airport, and Southend. Together, they make up the busiest airport system in the world in terms of number of passengers. For $3.67 / km, a taxi ride to and from any of these airports is quite expensive. There are other airports that service the City of London too, including domestic airports, RAF stations, and open/closed airports.