By air
The airport of Groningen (IATA: GRQ) is connected by Ryanair to some European airports, e.g. Milan Bergamo airport (twice weekly). In summer, more flights are available. City bus 2 serves the airport (50 minutes to town). Locals say that it takes about 20-30 minutes from airport to city center.
By train
Groningen has three train stations, the central station (Station Groningen), Groningen Europapark and Groningen Noord. All trains eventually arrive at the central station; only a few trains stop at the smaller stations.
There are direct NS-trains from Schiphol airport, Utrecht and Rotterdam to Groningen (2.5 hours) and Amsterdam Central can be reached with one change (2h20m). A regional line runs west to Leeuwarden, which takes 50 minutes by slow train, or 35 minutes by fast train (once an hour). Other regional lines (all operated by Arriva) run to Delfzijl and Rood school. The entire tracks take about 40 minutes and all stop in Groningen Noord as well.
There is an international connection that terminates in Leer Bahnhof (Germany). Once over the border, you can change line to reach Bremen, Hamburg and Hanover. Note that the train to Leer is very local and takes about 1h15m to travel between the two stations. A special ticket is available for €10, 30 or €17, 50 return (September 2012) - you can only find it at the Arriva counter inside Groningen railway station. In Leer, the train connects to an RE going to Hanover via Oldenburg and Bremen.
By bus
The main bus station is right next to the central train station. All urban and regional buses start or end here.
There is a direct buslink to Bremen (starting at €7, 50, one-way) and Oldenburg. Besides, there is a Euro lines bus stop.
You can get a ticket directly from and to Bremen
