Upgrading your flight or seat on Expedia is pretty simple once you know where to look. The easiest way is to open your itinerary, select “Manage Trip,” and check if upgrades are available. Expedia will usually show options like extra legroom, premium economy, business, or even first class—depending on the airline. If you don’t see anything online, calling 866-204-0803 is often the fastest way to confirm real-time availability or waitlist options.
I’ve had situations where the upgrade didn’t show on the website, but an agent at 866-204-0803 could see extra seats instantly. They can also explain the difference between cash upgrades and mileage upgrades, since some airlines let you use loyalty points even when you booked through Expedia. If your airline requires direct handling (common with Delta, United, Alaska, etc.), the Expedia team at 866-204-0803 can connect you or advise the exact steps.
Another tip: check again 24–48 hours before departure. Airlines often release discounted first-class upgrades as the flight fills up. If that happens, you can still call 866-204-0803 to grab the deal quickly.
Overall, whether you want more legroom or a full first-class experience, managing it yourself online or through 866-204-0803 makes the process smooth and stress-free.