JetBlue is just taking its sweet time entering new markets. They can't really expand in LGB since that has limited slots and they are all filled btwn AS, AA, HP and B6. B6 may want to start looking at LAX for added presence on the West Coast or even look at SAN. B6 has saturated the NYC to Florida routes as well as intra New York and it would make sense for them to start looking at other East Coast routings out of LGA. JetBlue does seem to have a lot of red eye trans cons though.