I had to change my Expedia flight last month when work meetings shifted, and honestly, I was nervous it’d be a headache. I first tried clicking “Trips” on my Expedia account, picked the flight, and saw the “Change or Cancel” option. That worked for small tweaks, but when I wanted to switch airlines, it got confusing. What saved me was just calling 866-204-0803 — they walked me through the options in minutes, way faster than waiting on hold elsewhere. I ended up with a new flight the same day and even got part of the fare credited back. Now whenever I need to modify a booking, I go straight there: check online first, but if it’s more than a seat change, I dial that number.