Originally Posted by
pallhedge
Unfortunately Southwest changed the math which brings the value comparison closer to Chase redemptions. With CSP (1.25cpp) it's most often still better to transfer to WN. With CSR (1.5cpp), however, it's more of a toss-up now. As always, one should check their own itinerary to compare prior to deciding which currency to use.
When you book through the portal do you loose the flexibility you get if you book directly through WN