A few months ago, I was trying to book a United flight to Chicago but wanted to use my Air Canada miles. At first, I wasn’t sure if it was even possible, so I decided to call 877-764-3622. The agent explained which partner flights I could book with my miles and helped me find the best option for my travel dates. It was super helpful—they even guided me on how to handle any changes if my plans shifted. Within 15 minutes, my United flight was booked using my Air Canada miles, and I felt confident everything was correct. Knowing that I can also use the same number to modify or cancel flights makes planning so much easier. Honestly, if you’re navigating partner airline bookings, this number is a real lifesaver.