The most efficient and popular way to travel from Glasgow Airport (GLA) to Edinburgh in 2026 is a "hybrid" route using the Glasgow Airport Express (Service 500) and the train. First, take the purple 500 bus from just outside the terminal to Glasgow Queen Street station (approx. 15–20 mins). From there, board a direct ScotRail train to Edinburgh Waverley, which runs every 15 minutes and takes about 50 minutes. The total travel time is roughly 75 to 90 minutes. For those preferring a direct road route without transfers, the Citylink 900 bus runs from Glasgow city center to Edinburgh Bus Station 24/7, though you still need to reach the city center from the airport first. Taxis or private transfers are the most convenient for groups but are significantly more expensive, often costing over £100.