这个应当是官方说法吧，航空公司是对的

https://help.cbp.gov/cgi-bin/customs.cfg/php/enduser/std_adp.php?p_faqid=905&p_created=1105727944&p_sid=RZKHN-Kj&p_accessibility=0&p_redirect=&p_srch=1&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19*****nQ9NjY1LDY2NSZwX3Byb2RzPTAmcF9jYXRzPTI4MyZwX3B2PSZwX2N2PTEuMjgzJnBfc2VhcmNoX3R5cGU9YW5zd2Vycy5zZWFyY2hfbmwmcF9wYWdlPTE!&p_li=&p_topview=1


Six Month Club requirements:

As a general rule, passports must be valid for six months beyond the date the traveler will exit the U.S., however, the U.S. has signed agreements with a number of countries to waive this requirement. When such an agreement is in place, the passport must be valid for the entire period of the visitor's intended stay, but the additional six month validity period is not required.
If a U.S. visa has been issued on a passport that has expired, you should carry both your new passport and the expired passport containing your valid visa. There is no need to re-apply for a new visa unless the visa term has itself expired
*Lawful permanent residents (LPRs), refugees, and asylees will continue to be able to use their Alien Registration Card (Form I-551), issued by DHS, or other valid evidence of permanent residence status or refugee or asylee status to apply for entry to the United States.

所有跟帖： 

• 毫无道理。我持中国护照，9月份去过国内，护照12月到期的，一路都没问题。 -雪色浪漫- ♂ (0 bytes) () 10/21/2009 postreply 14:54:29

• 那是执行的不严你幸运，不等于没有这个规定 -shsteele- ♂ (0 bytes) () 10/21/2009 postreply 16:19:44

• 你是旅游签证吗？ -usedtobeadoctor- ♀ (0 bytes) () 10/21/2009 postreply 16:20:23