港股航空股盘初拉升，中国国航(00753.HK)涨超6%，中国南方航空股份(01055.HK)、北京首都机场股份(00694.HK)涨超4%，中国东方航空股份(00670.HK)涨近4%。五一假期期间，亚洲货币普涨，有助于航空公司降低运输成本。

Group 1 - Hong Kong aviation stocks experienced a significant rise at the beginning of trading, with China National Aviation (00753.HK) increasing by over 6% [1] - China Southern Airlines (01055.HK) and Beijing Capital International Airport (00694.HK) both saw gains of over 4%, while China Eastern Airlines (00670.HK) rose nearly 4% [1] - The appreciation of Asian currencies during the May Day holiday is expected to help airlines reduce transportation costs [1]