Discounted flights are being offered by Eva Air to mark 30 years flying from Heathrow to Bangkok and Taipei.
Rates are being cut by between £30 and £60 depending on cabin class.
For bookings on the routes made between March 27 and April 10 for travel from May 1 until December 9.
Return tickets are also being given away in a prize draw on the carrier’s Facebook and Instagram pages.
The 30th anniversary sale will be promoted by the Taiwanese airline, which operates daily from Heathrow, on 175 London buses.
A lunch to thank trade partners is being held in London on March 30, the date of the route anniversary.
London-based general manager Sarah Wu said: “We are very excited to be celebrating the 30thy anniversary of the launch of our flights from London to Bangkok and Taipei.
“It has been an incredible 30 years and we have seen these routes become more and more popular with travellers from the UK. We wanted to mark this special occasion by giving back to our customers to thank them for their continued support of Eva Air.”