The U.S. Department of State issued a travel warning last week, urging Americans travelling or living abroad to avoid travel on September 11th.
Swedish Security Services (Säpo) aren't planning to issue any such warnings, advice or suggestions.
"The country's terror alert level is the same as it's been for about a year, 'elevated'", said Sara Kvarnström, press secretary at Säpo, to news agency TT.
Swedavia, the company that runs eleven Swedish airports, are unwilling to disclose whether they've tightened their security checks on September 11th or not.
However, Swedavia's press officer Helena Miller says that people travelling to and from Sweden on Sunday won't notice any difference.
"We haven't issued any particular recommendations. It's a regular travel day."
Travellers appear to agree with her. Travel agency Ticket have not noticed any diminished departures on Sunday. In general, holiday-makers' interest in New York continues to rise, according to press officer Martin Dumik.
However, Scandinavian airline SAS have plenty of room on their flights from Stockholm Arlanda and Oslo airports to New York. Malin Selander, from SAS's press department, is unwilling to speculate on reasons, but notes:
"It's been pretty fully booked lately."