Jet2 has been asking holidaymakers in the Balearic and Canary Islands to end holidays early as the government reintroduces quarantine rules.
The Foreign & Commonwealth Officer earlier this week began advising against all but essential travel to the Spanish destinations, leaving travellers already there in limbo.
In response, Jet2 said it cannot keep sending empty planes to pick up passengers on many different dates.
Hundreds of customers are thought to have had flights back to the UK cancelled and been asked to return sooner than planned.
Travellers were informed of the changes via emails and text messages.
A Jet2 spokesman said: “Following the latest government advice regarding travel to the Balearic and Canary Islands from the UK, we have taken the decision to suspend flights and holidays to Tenerife, Gran Canaria, Fuerteventura, Lanzarote, Majorca, Menorca and Ibiza up to and including August 9th.
“We have already suspended flights and holidays to our destinations in Mainland Spain (Costa de Almeria, Alicante, Malaga and Murcia) up to and including August 16th.
“We are operating empty outbound flights to pick up customers from these destinations up to and including August 3rd and we are contacting customers who are…