Delta Air Lines topped the list of airlines expensed by business travelers in 2013, although the average Delta expenditure last... (frequentbusinesstraveler.com)
After that, consider the dollar values of certain card benefits, such as an annual free flight, which could be worth hundreds of dollars, or a $ 300 fee credit for airline expenses. (valuepenguin.com)
I rather have the Amex Platinum over the Chase Saphire Reserve with $ 10,000 of purchase protection and one year additional warranty on purchases, plus $ 200 credit on airlines expenses in addition of all the above perks mentioned. (disorganizedtraveler.com)