Luton Airport, also know as London Luton (LTN), is actually about 50km from the centre of London. Fortunately the airport has good train and coach connections to central London. National Express runs a service that goes every 20 minutes from directly outside the terminal building at Luton Airport allowing you to check in at Luton within a couple of minutes of getting off the coach from London.
Other bus companies operating from Luton to London include EasyBus, Terravision and Greenline buses. Terravision, EasyBus and Greenline have separate kiosks at Luton Airport but operate a shared bus that all tickets are valid on. This bus is green and branded as Greenline with stickers for the other operators on it. EasyBus have additional buses that are not shared, branded in the bright Orange Easy theme colours, where you can only use easyBus tickets. See websites above for more info or download pdf timetables and maps for easyBus and Terravision by clicking the links.
The bus journey from Luton Airport to central London (Victoria Coach Station) is direct and takes approximately 1 hour and 5 minutes (depending on traffic) and costs 10 GBP each way if you buy a return. The bus also stops at Finchley Road, St. John's Wood, Marylebone and Portman Square. To book in advance on the secure official website just click the button below:
If you want the cheapest option to get from Luton airport to another UK city take a look at first getting EasyBus to central London (from 2 GBP one way) then picking up a Megabus from Victoria coach station to your final destination which can cost as little as 1.50 GBP one way if you book far enough ahead.
An alternative to the bus is to take a train from Luton Parkway station to central London arriving at St Pancras Station. This can be the best option during busy times dues to traffic on the UK motorways and around London. Luton Parkway station is a 10 minute shuttle bus drive (cost 1 GBP for single bus) away from Luton Airport. Trains from Luton Parkway to central London St Pancras run approximately every 15 minutes and take 30 minutes to make the journey.
If you book train ticket from Luton to London in advance the online cost can be as low as 23.50 GBP return comparing favourably with the bus.
It is possible to rent a car to travel from Luton to London by car, but it is best to book this in advance.
If you have a very early flight from Luton Airport or arrive late you may wish to spend a night at a hotel near the Airport.