请问去美国机票哪里订比较好？

有没有相关的代理呢？直接在航空公司网站上定好贵的说~~~谢谢啦！

I recommend orbitz.com.

I also can check:

www. expedia.com or www. travelocity.com and www.hotwire.com.

certainly you can buy tickets directly from the websites of those airlines: www.aa.com, www.united.com, www.delta.com...

if you are concerned about price but do not care about time, you can try:
www.priceline.com and bid for the flight.

Another option is checking the agencies in Chinatown, sometimes they have good deals too.

I usually use orbitz.