Currently, the only way to get to Luton airport is via regularly scheduled British Rail services from Kings Cross. Tickets cost around 16 return and can be purchased at the station at the time of travel. The one way journey takes around 45 minutes. Be aware that Luton station is not at the airport. An additional shuttle, usually supplied by the airlines, is necessary.
Cabs are readily available at all airport locations.
The approximate fare from Heathrow Airport is 40, and takes about 40 minutes. The approximate fare from Gatwick Airport is 75, and takes about 50 minutes, depending upon time of day. The approximate fare from Stansted Airport is 75, and takes about 50 minutes, depending on time of day. The approximate fare from Luton Airport is 70, and takes about 45 minutes, depending upon time of day. From Piccadilly Station, use the Lower Regent Street exit.