JB is making fantastic deals to get Virgin customers over to their brand. Even with how loyal Virgin's customers are, some may find it hard to pass up these deals being cut. I would be willing to bet that the most elite Virgin customers could even step up their own game and get even more perks out of JB with the promise to roll on over to them:
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Jet Blue at it again to win Virgins loyalty flyers
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Jet Blue at it again to win Virgins loyalty flyers