Originally Posted by
FAIPDXFlyer
WN's entrance into the SFO-SNA market apparently did not deter VX from also entering the market even though SNA is a
SMALLER airport than PDX. So what is the difference?

~FAI PDX Flyer

I think the major difference is that WN announced SFO-SNA after VX did. At the time VX committed to it, WN was not involved.