JetBlue TrueBlue lets you earn and redeem points easily with no blackout dates, points never expire, and family pooling available. 

Spirit Airlines offers discounted fares on bags, seats, and expedited security and boarding for all Spirit $9 Fare club members.

Delta Sky Priority ensures a smooth airport experience with priority check-in, security, and boarding benefits.

United miles or MileagePlus never expire and can be earned on flights and purchases, then redeemed for flights, upgrades, and more.

Qatar Airways Privilege Club allows you to redeem Avios for flights, upgrades, and more, with a validity period of 36 months. Redemptions start as low as 6,000 Avios.