Originally Posted by mikew99

Just for clarification, the U.S. DOT's "24-hour reservation requirement" applies to "each U.S. and foreign air carrier that has a website marketed to U.S. consumers" regardless of the flight origin and destination. It applies to "all reservations made seven days or more prior to the flight’s scheduled departure time." So it applies to all JQ and QF tickets purchased in the U.S. from the U.S.-facing Web sites.

Some airlines and travel agents have similar polices that apply where the U.S. DOT rule does not, so it pays to review the policy of the specific airline or agent.