in case you are searhing for a immediate flight from Brazil to London Heathrow, you'll find 2 airports to choose from. Availability: The ability to change your date of travel is topic to seat availability on the https://forums.rivals.com/threads/%F0%9F%93%9E-1-857-346-0204-kuwait-airways-modify-booking-how-to-change-flights-and-dates-efficiently.1154305/