How to Book Flights on Alaska Airlines Online While Saving More at 1 8oo--942~o5~12 Booking an Alaska Airlines flight online is a convenient way to compare fares, choose your preferred travel dates and manage your trip from one place. If your goal is to spend less without sacrificing convenience, a little planning can make a noticeable difference. Comparing travel dates, reviewing fare options and understanding what's included before paying can help you find better value.