After countless hours of online reasearch and taking into account some of the errors I have made traveling that impacted my finances . The best approach to attaining local currency would be the ATM at your destination. Airport Currency exchange tellers charge higher fees due to the convenience of the location . However it is best to withdraw money out of the ATM machine once abroad and landed at your destination.
All major Airports worldwide have ATM machines of the major banks in the area. By using the bank (ATM) directly you assure the most standard fees and conversion rates . Plus its very convenient just to go to an ATM machine (no matter what time you arrive, it will be open). If you check with your bank before you go you will find many times they have certain agreements with some international banks where you will not be charged fees to use the international banks’ ATM.