when is the cheapest time to fly from london to singapore?

Answer 1

Palmisan has given you a good site, but I have found a cheaper alternative, especially for the month of November '07.
Oasis Hong Kong are running a promotion for travel between the 15th August - 30th November. It involves booking a return flight, by the 15th August, '07, to Hong Kong and getting a free return flight from Hong Kong to Singapore. One of the conditions is that you spend one night in Hong Kong on outward journey.
Oasis fly daily from Gatwick and the cheapest return flight, inclusive of taxes etc, is in November (7th - 21st) for £281.97. Other examples are 8th - 15th for £295.97 & 8th - 21st for £301.97. There are other combinations of dates available to give you these prices.
It's certainly worth looking at. Good luck.

Answer 2

As a guidance, go to British Airways.com and go through a booking process for the destination you require. When you get to the final stages, you will see a calendar for the departure dates and the fares. The cheapest fares will be the dates that all airlines flying that route will also have their cheapest days. Then you check the return calendar for the same. Don't go any further as the next pages after the calendars are payment pages. Now check all airlines for their fares on the cheapest days.

Answer 3

Hey ! You can visit : http://www.edreams.com/flights/london-singapore/ . Hope it might help you . Good Luck.

Pal