Please be aware that Tokyo has multiple airports and that these results are for all airports serving the city.
The best month to fly between Tokyo and Singapore is January and the most expensive month to fly is June. (Average prices, based on 297 datapoints.)
The best day to arrive at Tokyo is Monday and it would be best to avoid Wednesday, as prices are on average 120.17% higher than on Monday. (Average prices, based on 297 datapoints.)
The cheapest airline flying from Tokyo to Singapore is Singapore Airlines. They are 43% cheaper than Japan Airlines. (Average prices, based on 305 datapoints.)
The best time to fly is at around 17. (Average prices, based on 520 datapoints.)