Changing flights is more expensive than what is available
Don't book flights with Expedia as they are mostly non refundable. If booking flights only, go to the website of the airlines directly. My experience - Bought flights to Japan for around $600 per passenger - I needed to change my itinerary. It says it is going to be $100 per passenger plus whatever flight price difference. I am ok with this. - However upon requesting to process change, I ended up being quoted with additional $700 per passenger even though there are available similar flights with similar airline for $456 per passenger on different dates - Obviously I wouldn't request for change for something that is cheaper. So basically I just lost $3600 because the tickets are non-refundable and changing it is $700 more per passenger. Beware of what you're buying, refund and change policies!