Route
LHR - KUL is the first comparison, but nearby UK departure airports can shift the total.

Asia
Malaysia works well when Kuala Lumpur timing, island connections, and hotel totals are planned together.
Planning board
LHR - KUL is the first comparison, but nearby UK departure airports can shift the total.
KLCC, Penang, and Langkawi stays
Regional add-ons need buffer time
Nearby country boards
India routes need baggage, layover, and late-arrival hotel strategy checked before price alone.
Japan planning should compare Haneda, Narita, Kansai, first-night hotels, and rail timing together.
Singapore is a strong stopover when Changi timing, hotel check-in, and recovery nights are planned together.
Thailand trips need airport, river, island-transfer, and first-night hotel planning on the same board.