Originally Posted by
JALPak
Because Jetstar IS a LCC! Paying OW membership fee will increase its cost base so they probably don't want to join
Quoting from Wikipedia
JetBlue
"JetBlue Airways Corporation is an American low-cost airline"
"JetBlue started by following Southwest's approach of offering low-cost travel, but sought to distinguish itself by its amenities, such as in-flight entertainment, TV on every seat and Satellite radio. In Neeleman's words, JetBlue looks "to bring humanity back to air travel."
Compared to Tiger, with *Class, ability to rent video units/ipads, limited interlining, ability to earn QF points on some fares, I would put Jetstar in a similar class.
Aerlingus
Aer Lingus withdrew from the Oneworld airline alliance on 31 March 2007, explained to be due to Aer Lingus' repositioning as a low-cost carrier