No matter how you justify the cost of a shuttle service to your superiors, you can be certain that your staff will appreciate the gesture. This article will discuss a few of the many advantages of using a shuttle bus service. Best Airport Transportation in Washington DC must adhere to strict time constraints. Customers must arrive at the airport at the scheduled check-in time. Read internet reviews and verify the companies' references before deciding on an airport shuttle service. There is a similar line of thinking for shuttles that run between airports.