In this reality, Charles Xavier became the Juggernaut who formed the X-Men. Thunderbird is a member of Charles Xavier's X-Men who serves as a police force that aids the mutants and persecutes the sapiens.
The total flight duration from Sydney, Australia to Boston, MA is 20 hours, 41 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds.
Flight time from Boston to Seattle, WA is 6 hours 20 minutes. Non-Stop flight duration from BOS to SEA is 6 hours 20 minutes (Operated by JetBlue Airways) Non-stop flight time from Boston to Seattle, WA is around 6 hours 45 minutes. Fastest one-stop flight between Boston and Seattle, WA takes close to 8 hours . However, some airlines could take as long as 23 hours based on the stopover destination and waiting duration. This is the average non-stop flight time from Boston to Seattle, WA.