if you travel last minute and only direct flights it is great - basicly equal to cash and your getting 2 points versus 1 point on other cards. Also, you can book on any site or with a travel agent and redeem the points after it hits your card.
Airline cards give you greater value as you can fly bus. or first for 115,000 point range verses this would be the actual price of the ticket with 00 at the end usually 380,000 - 500,000 points but I guess you should /2 as the others mostly give you 1 point 160,000 - 250,000 points.