Just went Mac myself and that was my only problem as well. Just go to "Apple" up on the tool bar and that takes you to Apple store and on the left side you will see downloads......get the Firefox browser and you will have no problems. Takes a minute.
I can know get as far as selecting the flight you want after searching for them. But after selecting the flight I want the continue button doesn't get me any further. I restarted the phone but stuck at this page and can't go further. Any ideas?