Some flights between Newcastle International Airport and the Canary Islands have been cancelled or delayed due to a Saharan sandstorm.
Departures from Gran Canaria, Lanzarote, La Palma and North Tenerife were able to take off on Monday morning, but those departing from South Tenerife continued to be grounded.
Flights to and from the airports were cancelled, suspended or diverted over the weekend due to poor visibility.
Flights to and from Tenerife South and Las Palmas remain affected, causing several flights between Newcastle to be delayed, cancelled or rescheduled.
The airport is advising passengers to check before they travel.
Passengers stranded in the Canaries posted photographs of people sitting on airport floors waiting for more information.
Greg Horsman, 29, was on holiday with his girlfriend and his friends on a Tui cruise and was due to fly home to Manchester on Saturday evening.
However, they were forced to stay in Gran Canaria for another two nights due to the storm.
He told the PA news agency: "It's frustrating. We're just ready to be home."
A spokeswoman for Tui said: "We would like to sincerely apologise to customers for the disruption caused by the adverse and changeable weather conditions in the Canary Islands on Saturday February 22 and Sunday February 23.
"The safety of our customers and crew is always our highest priority and we are working tirelessly to find the best solutions for all our customers."