This week: British Airways is adding a 27th destination in the US to its network; WestJet plans to increase its presence in Boston; and Sun Country Airlines is expanding to Canada for the first time.

This week: VietJet is further expanding service to Seoul; Air France plans to resume flights to Monrovia in Liberia; and German leisure airline Condor is adding a sixth destination in Canada.

This week: Hainan Airlines is returning to the Hungarian market; EVA Air plans Phuket resumption; and Juneyao Air add more European routes.