If you want a cheap flight from Yangon to London, you've got three airlines to choose from.
London Gatwick is just one of the airports in London. If you're not set on a specific airport, try changing your search from London Gatwick to London to see a broader range of flights – they might be cheaper. It usually takes about 24 hrs 25 mins to fly 8989 km to London Gatwick.
There are about 15 flights to or via London every week, so you have plenty of options. Keep your eye out for flights with Qatar Airways, Thai Airways International and Turkish Airlines – these are the most popular airlines for flying to .
If you're planning on going to London during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.