First, before you apply for a Southwest credit card, you should know that Southwest Airlines does not fly to Hawaii. So, basically you will waste your time and effort applying for a Southwest credit card. Instead of getting a Southwest credit card for your flight to Hawaii, consider getting a regular credit card with travel rewards. Such a card will allow you to earn miles or points on all your purchases. For example, the Discover it® Miles is not connected with any airline but allows to earn miles on all purchases. Earned miles can be redeemed for travel statement credits toward Southwest tickets or any other airline tickets or travel expenses. There are no blackout dates or other limits that airlines usually put on award tickets.