Compare between different airlines (regular and budget) and between the different classes of seats offered! If you can enjoy business class on a budget airline for the same money you'd pay to fly economy on a more "prestigious" airline, more power to you. You end up in the same destination but get to enjoy a more comfortable, luxurious experience. Why not?
The best city for flights to the USA from Australia is Los Angeles. This is a popular flight route and with several airlines competing for direct flights from Sydney, Melbourne and Brisbane you should have plenty of options for cheap flights to the USA. Popular carriers include Virgin Australia, Qantas, United and Delta, or consider airlines that offer a stopover in San Francisco such as China Southern and American Airlines. Once in Los Angeles, there are many low-cost domestic airlines, including no-frills leaders Southwest, JetBlue and Spirit Airlines, to fly you anywhere in any state.
to help bring in customers.
In Google Chrome or Safari, incognito is enabled by hitting Command (or “Control” if using PC), Shift, “N”. For Mozilla Firefox or Internet Explorer, hit Command (or “Control” if using a PC), Shift, “P”. This will open a new browser window where your information is not tracked, thus not inflating prices as you search. Note: if you're using an older version of OS X, open Safari then click “Safari” in the menu bar, and select “Private Browsing”.