Convenience is key at Sea-Tac Airport currency exchange counters, but so is knowing what you’re paying. Airport booths often mark up rates and tack on service fees. If you’re in a hurry, limit your exchange to a small amount. For better value, exchange money at your bank in advance or use an ATM at your destination. Don’t forget to use rate-checking tools online before you travel. With the right approach, you can make your money go further and avoid unnecessary charges.