Horrible. Never Never Never Never use Expedia. THIS IS A WARNING!!!!
As I was trying to book flights for a trip to Europe their web page gave me an error on the final "click". Something about being unable to book a leg of the flight. Customer service also tried with me several times on the phone. We switched to a different credit card (their suggestion), and got the same error.
HOWEVER, THEY WERE CHARGING MY CREDIT CARD WITH EVERY ATTEMPT!!!
In less than one hour they had CHARGED my card over $8000, and NO tickets, NO reservations, NO confirmations. I called Delta who couldn't find any reference to my tickets.
Guess what... the money IS TIED UP FOR FIVE DAYS until it "rolls off". I have been on the phone for 4+ HOURS trying to clean this up. Bank can't help me except to register a dispute, Delta can't help me. AND EXPEDIA WON'T HELP ME.
Customer service people barely speak English, phone connections are bad.
DO NOT USE EXPEDIA - YOUR TRIP AND YOUR MONEY ARE IN DANGER