You might end up paying 57.1% more on tickets purchased on the spot
Get free credits when you complete an experience
Stay connected to your friends, family, and social networks anywhere you go in the USA! This US SIM card from Ultra is capable of providing you with unlimited data streams thanks to the high-speed 4G LTE for the first 4GB, and unlimited 3G service thereafter, making sure that you have an internet connection anytime, anywhere. You'll be able to share your trip with everyone. You'll also receive unlimited calling and texting capabilities within the United States, and unlimited international calls to 55 countries (the first 1000 minutes are free for 15 countries!). As soon as you book your ticket, simply pick up your SIM at Hong Kong International Airport, and you're all set.