Just as well...for occasional usage, don't bother with Enteric Coating. It will cost 5 times more... For people who need to be on it everyday such as those with heart disease, it then has some benefits.

Another option, if you are an executive with money to spare. You can get a shot of Dalteparin (which is low-molecular weight heparin) 10,000 units subcutanesously on the day of flight... that will work much better than aspirin. It might cost around $50 with syringe and fee for physician prescription. This is the prevention (known as prophylaxis in medical term) for DVT in high risk patient, often used in surgical and cancer patients. Unlike heparin, the risk of bleeding is much smaller so the benefits are worth it.