spencer101
Westjet is a Domestic Carrier. Occasionally, it is a 'charter' carrier.
Since they don't yet fly to International destinations, like Europe or Asia, they haven't added the "FLAG" carrier arrow to their quiver.
Calgary to Hawaii, doesn't count. Neither does Winnipeg - Orlando.
Converted to FAR jargon, West Jet is a Domestic/Supplemental carrier. Again, we don't actually have the same differentiation in CARs. So, the fact WJA has a CDN flag on ALL its' aircraft is nice, but it doesn't make them a defacto 'flag' carrier when it comes to bilateral agreements between countries.
Hope this helps?
Willie