Hi there, This is Dr Basu, Experienced Specialist. I am here to address your concerns and provide great service.
There is no problem with flying.
Since you are already on warfarin, the risk of blood clot moving out of the ventricle to the brain or elsewhere is very low.
As long as you do not have any existing heart failure, or arrhythmias, flying will not be a problem.
Yes look for any signs of heart failure
shortness of breath,swelling, chest pain.
Arrhythmias are characterized by the dizziness, palpitations commonly.
If there is no other symptom, then you are good to go.