Can I get to Stockholm Skavsta Airport using SL ticket only?
Skavsta is not in the county of Stockholm, so you can’t get all the way there with the SL-ticket. But, if you have a card (for 1-30 days) you can take the local train to Gnesta and then take a cheaper bus from there to Nyköping, where you switch to a local bus to the airport. This ticket from Gnesta to Skavsta costs 62 SEK one way.