Is there a way to search for price/availability of the ticket types?

Finnair shows lowest price (ie campaign) and google flights does too (I can't find a filter for eg "flexible fare"). Expedia can filter out non-flex fares, but must search specific date/dest.

Matrix booking-code filter ("F BC=code") won't work as all book into the same code.
Is there something in fare names that can be used in matrix?

Or is there any other way to find price/availability on eligible fares?