A few months ago, I completely forgot to add my Miles & More frequent flyer number when booking a flight from Chicago to Frankfurt. I only realized it after checking my confirmation email and seeing those empty “loyalty program” fields. At first, I tried updating it through the airline’s app, but it kept giving me an error message. That’s when I decided to just call customer service directly at 877-764-3622, and honestly, it was the best move.
The rep was super friendly — she verified my booking, added my frequent flyer number on the spot, and even confirmed that my past miles would be credited automatically after my trip. She also helped me add my Known Traveler Number (KTN) so I could breeze through TSA PreCheck on the way back.
If you’re like me and sometimes forget these small details after booking, don’t stress. You can always log into your account and try to add it manually, but calling 877-764-3622 gets it done instantly. They can help with frequent flyer numbers, KTN updates, and even last-minute seat upgrades or flight changes — all in one go. Totally worth the quick call!
