Yes, there are multiple flights from Keflavik to Changi Intl for under S$ 1,197. The cheapest flight booked recently is on Lufthansa for just S$ 1,130, but on average you can expect to pay S$ 1,495.
There are no direct flights from Keflavik to Changi Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
The rainfall in Keflavik is generally less than the rainfall in Singapore City Airport. This will continue over the next 10 days.
Our data indicates that the weather will be 33 °C on average in the month of April. The temperature in Singapore City Airport is typically hotter than in Keflavik. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.
Lufthansa and Finnair can get you from Keflavik to Changi Intl in just under 18h. Your travel time can differ by up to 10h 10m. This flight may include one or multiple stops.
Lufthansa, at S$ 1,131, was found to be the cheapest airline from Keflavik to Changi Intl. An alternate airline flying to your destination would be Finnair.