I had to deal with this recently when I forgot to add a bag to my Expedia flight. What worked best for me was logging into my Expedia account, opening the trip, and looking for the “Manage reservation” option. From there, I could see baggage options depending on the airline. Honestly though, I got frustrated because the airline’s rules were confusing. I ended up calling 866-204-0803, and it was way faster — they helped me add a checked bag and even explained the airline’s fees clearly. I’ve also used that number once when I had to cancel a trip last minute, and it saved me a ton of stress. If you’re not sure or run into a glitch online, just call and they’ll sort it out instantly.
