I fly Southwest a lot and the great thing about this airline is that if you find a lower fare for a flight already booked, you can rebook your tickets online at no cost and you can get a credit for the difference to use on your next flight. Well, I’m too busy to be checking everyday but luckily my TripIt Pro did the work for me.
I received an email from them alerting me that I can get $45 in SW credit because they found a lower fare for a flight that they are tracking for me.
How? Well its a benefit of the Barclays Arrival Card. If you have this card then you should activate your free membership. After logging in online, you will see this Icon in the middle of the page
[Barclaycard Arrival™ World MasterCard® – Earn 2x on All Purchases]