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JetBlue Business credit card offers 40,000 bonus points after you spend $1,000 on purchases in the first 90 days. But there is no answer, if this amount of points is enough for a flight you are planning. The number of points required for a free flight depends on the fare, according to JetBlue. You can search for flights at JetBlue website where you have the option to see the fare displayed in either dollars or points. Travel rewards credit cards are more flexible in this way. You always know how many miles or points is needed for travel. Often you can redeem miles at a fixed rate of 1 cent per mile.