Welcome to FlyerTalk. Cancun is in Mexico, which United lumps into "Central America". From North America, the roundtrip coach award is either going to be 35K miles (saver award) or 70K miles (standard award).
Originally Posted by
dmdvfl
I am new to mileage program and am trying to figure out how many miles I need to go from SFO to CUN. Would Cancun considered as N. America? Base on their chart, that would be 25k miles. Also, is there expiration date if you don't use your mileage? Any help would be appreciate.