In the municipality lies the largest workplace in Sweden, the
Arlanda Airport, with 13,000 employees in 200 companies. As a result, Sigtuna is travelled through by 18,300,000 visitors yearly, and has the fourth most hotel stays, following to the commercial and regional centres
Stockholm,
Gothenburg and
Malmö.
Swedavia, the Swedish airport management company, has its head office on the airport property.
Scandinavian Airlines previously had its head office on the airport property. ==International relations==