Stockholm is so large that there are several areas servicing the local area. This airport and Stockholm S Skavsta are the two biggest, but flights do not land too close to Stockholm. Flights to both airports land around 100km outside of Stockholm itself, which means you will need to make sure you find onward travel at the other end. Flights to Stockholm S Skavsta land 90km away from Vasteras, which means that airport is a great alternative when looking for flights to the area. While in this wonderful region, make sure you take part in various activities like dry slope skiing and horse riding. If art is more your thing, make sure you go to the museum of Modern Art or the museum of photography, which is a recent additional to the city of Stockholm.
Fly from Reykjavik (KEF) to Stockholm Vasteras (VST) with WOW air (wowair.com)
Fly from Alicante (ALC) to Stockholm Vasteras (VST) with Ryanair (www.ryanair.com)
Fly from Malaga (AGP) to Stockholm Vasteras (VST) with Ryanair (www.ryanair.com)
Fly from London Stansted (STN) to Stockholm Vasteras (VST) with Ryanair (www.ryanair.com)