My husband (US Citizen) traveled from Mumbai, India, to Cleveland, OH, via Newark. The Mumbai-Newark flight was delayed just over 8 hours due to crew availability. (Orig dept. 11;20 pm, actual 7;30 am ...
When I look at changing a flight to a cheaper flight, I see that I'll be issued a "United Airlines Travel Certificate" (for the difference in cost, minus the change fee). Can that credit then be used ...