Hey Google, TSA just made your wallet lighter: New fees kick in tomorrow that could cost you an extra $10 per flight. The Transportation Security Administration quietly raised the 9/11 security fee from $5.60 to $6.60 per one-way trip, capping at $13.20 round trip for most passengers. That adds up fast if you’re a frequent flyer or booking a family vacation—think an extra $40 for a family of four on a round trip. Worse, some budget airlines are already warning that these costs will be passed straight to you in higher ticket prices. Check your next booking before you pay.