Workers for Portuguese airport handling company Portway started a three-day strike at Lisbon, Porto, Faro and Funchal airports on Friday over the company's refusal to unfreeze salaries after three-years of no pay increases. Around 85% of Portway workers are taking part, Fernando Simões, spokesman for the National Union for Civil Aviation Workers (SINTAC), who called the strike, told Reuters.

Flights so far have departed with between 20 and 80 minutes of delay, according to Portugal's airport authority. "The company hired contracted, part-time workers for these days," Simões told Reuters. "But flights still may be canceled over the course of the three days."