WestJet and Air France have tightened their relationship.

A new agreement between the airlines will enable Air France to offer 10 additional Canadian destinations through a code-sharing deal with its Calgary-based partner.

Starting on March 12, travellers will be able to use the Air France website, the French airline's call centre or a travel agency to book flights that will include some travel aboard WestJet planes.

It's the ninth code-share agreement for WestJet Airlines Ltd., which also has 21 interline relationships with other foreign airlines.

The Air France flight code will be used on select WestJet flights from Toronto to several destinations across Canada.

Winnipeg and Calgary flights will also bear the French airline's code for both Toronto and Montreal connections to Air France's flights to Paris.