The airline and operator has put 30,000 new seats on sale, additional flights and larger aircraft – which have been added this week.
Jet2 said customers are flocking to Turkey “in their droves”, so has added capacity to Antalya, Dalaman and Bodrum.
Capacity has also been added to Corfu, Crete (Heraklion), Rhodes, Kos and Zante “in direct response to demand”.
Steve Heapy, chief executive of Jet2.com and Jet2holidays, said: “We are seeing a real spike in demand for holidays and flights to Turkey and Greece, and as usual we have been quick to respond to what our customers want.
“We have been demonstrating our commitment to Turkey and Greece over recent years, as seen through our continued growth, and we are working with governments and tourist boards to strengthen and develop that commitment. We would like to say thank you to them for their continued support.”
It comes after reports in the mainstream media that Jet2 has “warned some of its customers in Spain that they should return to the UK earlier than planned or risk having to make their own way home”.
It follows the government’s decision to remove Spain and its islands from the Foreign Office advice exemption list, as well as reinstating a 14-day quarantine for returning holidaymakers.
Jet2 is suspending flights and holidays to Tenerife, Gran Canaria, Fuerteventura, Lanzarote, Majorca, Menorca and Ibiza up to and including 9 August.
Flights to mainland Spain had already been cancelled up to and including 16 August and the company is operating empty outbound flights to bring customers home until 3 August.
A Jet2 spokesperson said in response to the reports: “We are operating empty outbound flights to pick up customers from these destinations up to and including 3 August, and we are contacting customers who are currently in these destinations to advise them of their options regarding flying back to the UK.
“We appreciate that some of our package holiday customers were due to stay on holiday for longer than this and we apologise for any inconvenience caused.
“It is important to note that we are responding to a very fast-moving situation with updates coming from the government with little or notice, and we have had to make decisions about our programme accordingly.
“We can assure these customers that we will be in touch with them to resolve any issues that they may have.”
