The best month to fly between Colombo and Doha is October and the most expensive month to fly is February. (Average prices, based on 469 datapoints.)
The best day to arrive at Colombo is Tuesday and it would be best to avoid Friday, as prices are on average 199.8% higher than on Tuesday. (Average prices, based on 111525 datapoints.)
The best time to fly is at around 10. (Average prices, based on 529 datapoints.)