If you need a good reason to fly JetBlue or get an American Express card, here are 50: for a limited time, you'll get 50 TrueBlue frequent flyer points with your first purchase, and that's half the points you need for a free round-trip on JetBlue. And unlike with many airlines, your TrueBlue points won't expire. Use the card or fly JetBlue, and your points get extended for a full year.

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