Cambridge is not equally accessible by all the London's International Airports. Luton Airport can be reached by the National Express Coach service that might take more than 15 hours to reach here.airport transfer in cambridge https://www.tripindicator.com/best-airport-transfers-cambridge-city.html There are many buses that are operated from here with a frequency of 2 hours. Heathrow airport can be best reached by the taking a car or a coach and can take up to 2 hours to reach here depending on the traffic.