How long does it take to mail a letter from Hawaii Oregon?

Hawaii is a state in the United States, and Oregon is a state in the United States. Therefore, mailing a letter from Hawaii to Oregon does not require international postage. The time it takes to mail a letter from Hawaii to Oregon depends on the shipping method selected. Standard USPS First-Class Mail typically takes 3-5 business days, while USPS Priority Mail Express can take 1-2 business days.