Porter Airlines says it's working to get stranded passengers back in the air after a computer glitch caused the cancellation or delay of about 40 flights Tuesday night.

The problem affected the airline's check-in system, as well as its website and call centre.

Six of today's flights have been cancelled or delayed, but Porter says it isn't expecting any more disruptions.

The airline is still advising passengers to check the status of their flight before heading to the airport.

The flight booking system Porter uses is used by about 50 other companies around the world. Those companies have also been experiencing problems.