I had to cancel a Priceline flight once when my work trip got moved around, and the process was pretty straightforward. You can log into your Priceline account, find your trip under “My Trips,” and request a cancellation there. But honestly, when I tried that, it felt confusing with all the airline rules mixed in. I ended up just calling 866-204-0803, and that was so much easier. The rep explained my options clearly, told me whether I’d get a refund or credit, and handled the cancellation in just a few minutes. It saved me from guessing what was refundable and what wasn’t. Now, anytime I book through Priceline, I keep that number saved because it’s the fastest way to instantly book, cancel, or modify flights without all the stress.