13 hr 25 min is the shortest flight time from Singapore to London.

The cheapest days to fly are usually in March. Typical prices range from $640 to $810.

The best round-trip deal recently found on Google Flights from Singapore to London was with China Eastern from $677. The best one-way deal was with China Eastern from $343.

There are direct flights from Singapore to London on a daily basis.

Singapore Airlines, British Airways and Qantas fly direct from Singapore to London.

The cheapest round-trip flight from Singapore to London starts at $677 from Thu, Jun 20 to Wed, Jul 3. The cheapest one-way flight starts at $343 and departs on Wed, Jun 19.

London is a year-round destination, getting busiest Jun–Sep and in the run-up to Christmas and New Year (Dec). Jul–Aug is when many Europeans take holidays, so visitors may face more crowds and limited availability of hotel rooms. Key events include the London Marathon (Apr), Notting Hill Carnival (Aug) and Frieze London art fair (Oct). Sep–May is the city's primary season for theatre, opera, ballet and classical music. Summer’s warmer weather brings many free outdoor music and theatre festivals.

It's easy to use Google Flights to find the cheapest days to fly from Singapore to London.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.