The budget-friendly provider will see its first flights depart to Faro, in the Algarve, from August 24.
It will join the current Madeira flight offering already in place.
Passengers can jet off on weekly flights to the sun-soaked destination from all nine of Jet2’s UK bases.
Airports serving the holiday hotspot include Belfast International, Birmingham, East Midlands, Edinburgh, Glasgow, Leeds Bradford, London Stansted, Manchester and Newcastle.
Flights to Madeira will continue to run from Birmingham, East Midlands, Edinburgh, Leeds Bradford, Manchester and London Stansted.
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“Despite the government advice that has been in place, the demand for flights and holidays to Portugal has remained strong, so we are looking forward to resuming our operations to Faro in addition to Madeira.
“With a fantastic choice of flights and holidays, not to mention fantastic deals and free child places available, there’s plenty of choice and value for those looking to get away for a much-needed break in the Portuguese sunshine this summer.”
The Algarve Tourism board is encouraging Britons to return.
João Fernandes, President of Algarve Tourism said: “It was a long time coming but we are really delighted with the decision to lift the quarantine requirement.
“Here in the Algarve, the British market is our biggest and we are so pleased that we can finally welcome back all those British visitors that were put off travelling here because of the quarantine rules.
“Our beaches are prepared, our hotels are open, our restaurants, golf courses, hiking/cycling trails and waterparks are ready!
“Our beautiful region eagerly awaits the British visitor to discover the extraordinary culture and heritage of this part of Portugal.”
The tourism board also states that the Algarve is “one of the least affected regions in Portugal”.
“The latest figures show just 0.05 percent of 100,000 inhabitants, so it’s one of the safest places you can be,” continues Mr Fernandes.
“We were quick to adopt preventive measures and extensive testing at an early stage to mitigate the spread of the pandemic, and as a result, we have had much fewer cases than other European countries.”
Though it is welcome news for those planning a late summer holiday, in recent months there have been plenty of customers left facing devastating as their holiday plans were axed.
Jet2 customers impacted with previous flight and holiday cancellations ahead of the Foreign and Commonwealth Office (FCO) travel advice change are still entitled to claim refunds or rebook their flight.
Jet2 and Jet2holidays are offering customers the option to rebook with no admin fee, a refund credit note or a full cash refund.
“We have been busy looking after customers and independent travel agents during these uncertain times,” continues Mr Heapy.