"Even if it's too early to give any figures, market studies show there is potential for 14,000 travelers after 10 years of business," she added.
Spaceport Sweden is not building its own spacecraft, but will instead collaborate with a company that is doing so, she says, refusing to disclose how many spacecraft it will operate nor the identity of its partner.
In the United States, several companies are already developing aircraft capable of carrying space tourists, such as Richard Branson's Virgin Galactic.
"The technology isn't fully developed yet," Nilsdotter said, adding that the companies were currently carrying out test flights in the United States.
The first commercial space flights are expected to take place in the United States in 2014 and a few years after that in Sweden.
The head of the Esrange space research and rocket site, Lennart Poromaa, is meanwhile more measured in his enthusiasm for the project.
"In a few years there may be commercial space flights, but it will take longer than people think," he said.
Esrange pulled out of the project "because we're not about creating adventure", he explained.
But "we could help them if they need help in the field of research, possibly", the aerospace engineer said.
According to Nilsdotter, space flights could take off four times a day. Esrange meanwhile launches four rockets a year.
"Researchers who want to test their experiments in microgravity may be able to fly with us and then adjust their projects," she said.
In the United States, more than 1,000 tickets for space flights have already been reserved, at around $200,000 (153,000 euros) apiece.
For adventure-seekers who can't wait to visit space, Spaceport Sweden already offers flights from Kiruna airport to view the northern lights, a spectacular phenomenon of colorful lights that streak across the night sky, for the tidy sum of 6,990 kronor (810 euros, $1,059).