FOR UK ALSO ONLY IF YOUR GREEN CARD WAS ISSUED BEFORE 1998 YOU NEED TRANSIT VISA .IF YOU HAVE VALID STAMPED VISA IN US YOU DONT NEED TRANSIT VISA FOR UK. REGARDING SHAMBHU JEE ,I WANT TO LET HIM KNOW THAT FARES ARE ALWAYS DEPEND ON THE DATE OF TRAVEL,IF HE GIVES DIFFERENT DATES TO DIFFERENT TRAVEL AGENTS HE WILL GET DIFFERENT FARES.I CAN ASSURE YOU THAT NOBODY CAN BEAT MY FARE.THANK