看见很多人在问关于航空公司行李的重量问题，下面给大家讲解美国各大航空公司经济舱位的行李要求：
CO(Continental Airlines) 美国大陆航空：
The maximum combined linear measurement (L + W + H) of the carry-on bag is 51 inches (130 cm). The maximum weight of the carry-on bag is 40 pounds (18 kg). (随身行李 51英尺/130厘米之内 40磅/18公斤(之内))
2 Checked Bags: Maximum 50 lbs (23 kg) and 62 linear inches (157 cm) (total length + width + height) per piece.
(托运行李 2个 62英尺/157厘米(每一个箱子) 50磅/23公斤(每个箱子))
AA(American Airlines)美国航空公司：
For flights to international destinations (国际航线：)
Carry-on 1 45 in/114 cm 40 lbs/18 kgs. (随身行李 1个 45英尺/114厘米(之内) 40磅/18公斤(之内))
Checked 2 62 in/157 cm each 50 lbs/23 kgs(托运 2个 62英尺/157厘米(每个箱子) 50磅/23公斤(每个箱子)
$25 USD charge each for bags weighing 51-70 lbs.(另：如箱子超重在51磅至70磅之内 得交美金25一个箱子)
NW(NorthWest Airlines) 美国西北航空公司：
carry one piece of luggage on board Cannot exceed 45 linear inches (9 inches by 14 inches by 22 inches) Cannot exceed 40 pounds. (随身行李 1个 45英尺 40磅/18公斤(之内))
* Exceptions for travel wholly between U.S./Canada and the Philippines, Hong Kong or China, checked pieces may weigh up to 70 pounds (32 kg) each. (托运行李 2个 62英尺/157厘米(每一个箱子) 70磅/32公斤(每个箱子))
UA(United Airlines) 美联行
Carry-on bag dimensions should not be more than 9" x 14" x 22" (length + width + height) or 45 linear inches (the length, height and width added together). (随身行李 1个 45英尺 40磅/18公斤(之内))
2 bags, maximum 50 pounds/23kg each (托运行李 2个 50磅/23公斤(每个箱子)
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