How much does it cost to mail a first class letter to London England?

As of my last update, mailing a first-class letter from the United States to London, England typically costs around $1.40 for a standard letter weighing up to one ounce. Prices may vary based on additional weight or specific services, and it's advisable to check with the United States Postal Service (USPS) for the most current rates. Additionally, International Shipping rates can change, so verifying the latest information is recommended before sending.