USPS Postage: New York to Spain (Airmail)

USPS international postage depends on weight, size, and service. As of current rates (subject to change):

• First-Class Mail International (Letter, 1 oz): $1.65 (non-trackable, standard).
• First-Class Package International Service (trackable, up to 8 oz): ~$15.75+.
• Global Forever Stamp: $1.65 (covers 1 oz letter to any country).

For letters, a single Global Forever stamp ($1.65) suffices. For heavier/thicker items, use package services. Always verify current rates at usps.com or a post office before mailing.