To book an airline ticket online, visit EbookTrip's user-friendly website. Select your departure and arrival airports, and dates, and click 'Search'. Compare rates from multiple airlines, choose your desired flight, and click 'Select'. Confirm your itinerary details, enter passenger information, then proceed to payment by entering your credit card details and clicking 'Complete Booking'. You can also call their customer service for assistance. EbookTrip offers daily updated discounted prices, 24/7 customer support, easy booking, and additional savings.