22 days in United States Itinerary

Family-friendly places like Alcatraz Island and Fisherman's Wharf will thrill your kids. There's still lots to do: take in the views from Golden Gate Bridge, see the interesting displays at Exploratorium, get great views at Twin Peaks, and browse the different shops at Ferry Building Marketplace.

For reviews, ratings, photos, and tourist information, read San Francisco route planning site.

Sydney, Australia to San Francisco is an approximately 16.5-hour flight. The time zone difference moving from Australian Eastern Standard Time (AEST) to Pacific Standard Time (PST) is minus 18 hours. In September, daytime highs in San Francisco are 28°C, while nighttime lows are 17°C. Wrap up your sightseeing by early afternoon on the 25th (Wed) to allow time for the flight to Washington DC.

Kids will enjoy National Air and Space Museum and White House. There's lots more to do: admire the masterpieces at National Gallery of Art, get a sense of history and politics at United States Capitol, browse the collection at Library of Congress, and learn more about the world around you at Smithsonian National Museum of Natural History.

To see where to stay, other places to visit, traveler tips, and other tourist information, you can read our Washington DC road trip planner.

Getting from San Francisco to Washington DC by flight takes about 7 hours. Other options: drive; or do a combination of subway and train. The time zone changes from Pacific Standard Time to Eastern Standard Time, which is usually a 3 hour difference. Expect a bit warmer temperatures when traveling from San Francisco in September; daily highs in Washington DC reach 32°C and lows reach 21°C. Wrap up your sightseeing on the 29th (Sun) to allow time to fly to New York City.

Attractions like Central Park and The Metropolitan Museum of Art make great kid-friendly stops. And it doesn't end there: enjoy breathtaking views from Empire State Building, go for a walk through The High Line, admire the landmark architecture of Grand Central Terminal, and pause for some photo ops at Statue of Liberty National Monument.

To see where to stay, maps, traveler tips, and other tourist information, read our New York City vacation planner.

You can fly from Washington DC to New York City in 3 hours. Other options are to take a train; or drive. In September, daytime highs in New York City are 31°C, while nighttime lows are 22°C. Finish your sightseeing early on the 4th (Fri) so you can fly to Yellowstone National Park.

Attractions like Grand Canyon of the Yellowstone and Grand Prismatic Spring make great kid-friendly stops. Step out of Yellowstone National Park to go to Grand Teton National Park and see Grand Teton, which is approximately 1h 25 min away. The adventure continues: take in the dramatic natural features at Lower Geyser Basin, cruise along Firehole Lake Drive, tour the pleasant surroundings at Lone Star Geyser, and take in the natural beauty of Upper Geyser Basin.

To find ratings, maps, more things to do, and other tourist information, go to the Yellowstone National Park itinerary planner.

Getting from New York City to Yellowstone National Park by flight takes about 7 hours. Other options: drive. You'll gain 2 hours traveling from New York City to Yellowstone National Park due to the time zone difference. Traveling from New York City in October, things will get much colder in Yellowstone National Park: highs are around 9°C and lows about -4°C. Cap off your sightseeing on the 9th (Wed) early enough to catch the flight to Seattle.

Start off your visit on the 10th (Thu): enjoy breathtaking views from Space Needle, then admire the masterpieces at Chihuly Garden and Glass, then take a stroll through Pike Place Market, and finally admire nature's wide array of creatures at Seattle Aquarium. On the 11th (Fri), you'll have a packed day of sightseeing: examine the collection at The Museum of Flight, then see the interesting displays at Wing Luke Museum of the Asian Pacific American Experience, then take in the waterfront at Hiram M. Chittenden Locks, and finally stop by Elliott Bay Book Company.

To find maps, more things to do, other places to visit, and other tourist information, read Seattle trip planning site.

Traveling by flight from Yellowstone National Park to Seattle takes 3.5 hours. Alternatively, you can drive; or do a combination of car, bus, and train. The time zone difference when traveling from Yellowstone National Park to Seattle is minus 1 hour. When traveling from Yellowstone National Park in October, plan for a bit warmer days in Seattle, with highs around 20°C, while nights are much warmer with lows around 11°C. Wrap up your sightseeing on the 12th (Sat) to allow time to fly back home.