TSA PreCheck and Global Entry are both trusted traveler programs. TSA PreCheck gets you expedited security screening when you’re flying with a participating airline and 73 airlines (and counting) that are part of the program. If the TSA PreCheck security lane is available (and operating) at the airport, you’ll not only have access to a much shorter line, but you won’t need to remove your shoes or belt and you can leave your laptop or liquids in your bag. This can be a lifesaver if you’re running late for a flight. The TSA PreCheck application fee is $85 and after submitting your application you’ll need to complete a background check and in-person interview. A TSA PreCheck membership is valid for five years.
The process for applying for Global Entry is similar to TSA PreCheck, but the application fee is $100 and there are almost always much longer wait times to schedule an interview. You can get around this by getting an interview on arrival at some locations. Once you’re approved for Global Entry you’ll have access to TSA PreCheck security lanes and you’ll also get expedited customs when returning to the U.S. through any of these airports. Global Entry is also valid for five years, so for only $15 more you’re getting TSA PreCheck expedited security plus you can speed through U.S. Customs.
Unless you aren’t in a position to wait the extra time it takes to be approved for Global Entry that’s the one you’ll want to apply for. Otherwise, get TSA PreCheck and just use Mobile Passport when returning to the U.S. Just keep in mind that you can’t use Mobile Passport and Global Entry at the same time.