Flights from HK to Barcelona?

香港沒有直航機到西班牙巴塞隆拿的. 一定需要轉機

英航 -- 於倫敦轉機, 最快 16 小時 20 分
國泰 -- 於倫敦或阿姆斯特丹轉機, 最快 16 小時 25 分
法航 -- 於巴黎轉機 , 最快 16 小時 30 分
德航 -- 於法蘭克福轉機 , 最快 16 小時 10 分
新加坡航空 -- 於新加坡轉機及停米蘭, 最快 21 小時 30 分

thai airways hong kong via bangkok to barcelone
qatar airways via doha to madrid

No... Currently there is no direct flights between Hong Kong and Barcelona... However, there are a few options that you can take between Hong Kong and Barcelona:
Option 1 (Singapore Airlines):
SQ865 Hong Kong-Singapore 1830-2220 Daily 773
SQ378 Singapore-Barcelona 2335-0850 Mon/Wed/Fri 772
-
SQ377 Barcelona-Singapore 1010-0800 Tue/Thu/Sat 772
SQ862 Singapore-Hong Kong 1100-1445 Daily772
OR
Option 2 (Cathay Pacific + British Airways/Iberia)
CX251 Hong Kong-London Heathrow 2355-0505+1 Daily 744
CX255 Hong Kong-London Heathrow 0055-0620+1 Daily 744
IB4183 London Heathrow-Barcelona 0620-0920 Daily 320
BA478 London Heathrow-Barcelona 0725-1030 Daily 320
BA484 London Heathrow-Barcelona09 10-1220 Daily 320
-
BA485 Barcelona-London Heathrow 1320-1440 Daily 320
IB4188 Barcelona-London Heathrow 1425-1540 Daily 320
IB4176 Barcelona-London Heathrow 1640-1755 Daily 320
BA481 Barcelona-London Heathrow 1820-1940 Daily 320
CX250 London Heathrow-Hong Kong 1805-1405+1 Daily 744
CX256 London Heathrow-Hong Kong 1925-1550+1 Daily 343
CX254 London Heathrow-Hong Kong 2150-1805+1 Daily 744
Or
Option 3 (Cathay Pacific + Iberia)
CX261 Hong Kong-Paris CDG 2345-0555+1 Daily 744
IB44311 Paris CDG-Barcelona 0720-0855 Daily M88
-
IB4422 Barcelona-Paris CDG 0720-0905 Daily M88
CX262 Paris CDG-Hong Kong 1305-0740+1 Daily 744

*These are only few of the options that you have between Hong Kong and Barcelona... Other option include flying via Frankfurt/Munich/Ams terdam/Zurich with Lufthansa/KLM or Swiss AirLines...
For Cathay Pacific, you can choose to buy a package... Its usually the fare on Cathay Pacific flights from Hong Kong to Europe then add a HKD1000 additional cost for the inter-Europe return... And in that case, flying via London Heathrow is the cheapest as both Cathay Pacific and British Airways have promotion on the route during off peak season for as cheap as HKD3300... So for a Barcelona return, it will cost HKD4300 plus tax and allow stopover at London...
Hope these information would help you...
PS. If you choose to fly via London Heathrow, please allow yourself around 90minutes minimum for connection...