Originally Posted by ricktoronto

They've done a fine service to customer by getting rid of the chart again in the link I posted (so here it is again: Look for How to identify WestJet fare bundles in the GDS found on this page https://www.westjettravelagents.com/...eral-reference). They have multiple fare buckets for the same "class" of fare (e.g. Econo Flex). So all M B Y fares are econo flex. If you want a B or Y fare then ask for it from your travel agent or from WestJet or check the fare basis code before paying assuming they do that. I use a human TA for all tickets which means I don't face this issue because we can discuss what fare basis makes sense. The price gap between M and either B or Y might not justify paying for other than M if the cost is ridiculous for the same benefits/costs.

Here's their current chart again.