I needed a buy a ticket last month from Qatar to Colombo. As per my friend's recommendation, I booked a ticket through Airtrvl from Qatar Airway. I was really surprised and delighted regarding their super fast service. Charges were also very affordable. Their customer service should be appreciated. Later I searched more and found that they have more major airline tickets available to buy. I can highly recommend that this is the best website which can buy airline tickets online.