i travel to come here in the UK with 3 kids ages 6, 2 and 1 year old last year but of course with the husband my youngest age 1 year old that time was setting on my lap..while the two kids were have there own seat between us couple..
we have use qantas airline from singapore to heathtrow and cebu pacific from-davao manila-singapore and without problem we arrive safely for 22 hours in the air hard work that was..though if i rem as i do all kids stuff insdie the plane..while the husband aslept on board