our delta flight was delayed for 4hours in Detroit.then we had engine trouble on our way to Korea. After 10 hours of flying we ended up in Minneapolis. Told we could not get another plane for at least 8 hours. Flew back to pittsburgh due to length of travel. I tried to get another flight from delta and was told i would have to pay the going rate.700.oo more. Delta customer service was totally unprofessional.