The U.K. government told Britons to hold off on planning foreign holidays this summer, deflating the hopes of an airline industry desperate to get flying again before another high season slips by, Bloomberg News reported. While confirming that restaurants, pubs and shops in England will reopen next week, Prime Minister Boris Johnson said it’s not yet clear that non-essential international travel can resume safely as planned on May 17. The move extends the uncertainty facing an airline industry reeling from over a year of Covid-19 restrictions that have shaken balance sheets and forced carriers to raise cash to stay afloat. Speaking at a press conference on Monday, Johnson said he was hopeful that foreign travel could resume by the target date, if virus surges in other countries can be contained. When the U.K. does reopen, a “traffic-light” system will be used to classify countries into green, amber and red based on factors such as virus infection rates and vaccination levels. More details will be set forth when Johnson’s task force on global travel publishes its report later this week. Read more.