You technically can't withdraw from casinos with American Express, but there are workarounds. Ontario casinos don't support Amex transactions directly, but you can use an Amex card to deposit through e-wallets such as PayPal. Correspondingly, you can withdraw via PayPal, and then withdraw from PayPal back to the bank account your Amex card is linked to. Of course, PayPal fees would need to be taken into account here. Check out our deposit and withdrawal section for more.