If you want a cheap flight from Colombo (Sri Lanka) to London, you've got one airlines to choose from. You can use the search box to filter your preferences, but we've found that the cheapest day to fly is 13 / Jun / 2023.
Make sure you use the search options above to search for flights to other airports in London, not just London City Airport. The more options you look at, the better your chance of finding a cheap deal. Just so you know, the flight typically takes 15 hrs 35 mins.
There are about 15 flights to or via London every week, so you have plenty of options.
You can expect accommodation prices to be higher at this time of year too. Last-minute deals do crop up, but it's best to book everything in advance to avoid disappointment.