The tax would range between 80 and 430 kronor (between around $8.8 and $48) per ticket depending on the length of the flight, deputy finance minister Per Bolund told reporters.
The proposal would be included in the 2018 budget bill, and the tax would take effect on January 1st, 2018.
“It's an example of green tax reforms,” Bolund, a member of the Green Party, said.
The centre-right opposition is fiercely opposed to the move. It fears airlines could move their routes to neighbouring countries, and companies with head offices in Sweden could move abroad.
But Bolund said the Social Democrat-Green government expected parliament to pass the proposal, as it was “highly unlikely” the centre-right opposition would collaborate with the far-right to vote down the budget bill.