What did they do to you? did you have any stents or was it simply exploration? In the UK, I've had 10 stents now and the Cardiologist has always said any flying is permitted after 6 days. This is to ensure any stents are settled in and not giving issues.
In most cases, you have an angioseal fitted to the Femoral Artery in your leg, which takes 90 days to dissolve while the artery heals. If I have just exploration and no stents, I'm usually doing all normal activities within 3 days. A quick call to the Cath Lab where your work was done will give you the answers you seek. They are always helpful and give good advice. If you have other known heart problems, then the Cardiologist may not want you to fly for a while.
How long takes to heal the stem procedure after the catherization, I read some thing but I do not remember.
It would be best to ask your doctor, but if you have healed completely you should be fine, but please ask your doctor to be safe.
Jon