Lufthansa Group will resume more than 100 weekly services from the UK and Ireland, starting next month.
From 15 June, the group will operate 115 weekly frequencies, including 11 from Dublin and increased service from Heathrow.
The expansion also includes eight new routes departing five UK and Irish airports.
In total, the group hopes to serve 130 destinations by the end of June. It builds on its proposed service expansion from 1 June.
The Foreign Office continues to advise against all non-essential travel worldwide, while the UK’s 14-day quarantine on arrival requirement will come into force on 8 June for an initial three-week period.
"By resuming a part of our schedule in June, Lufthansa Group is building up mobility by connecting the UK and Ireland again to our worldwide network," said Andreas Koster, the group’s senior sales director for the UK and Ireland.
"This is an important contribution to support the restart of industry and commerce, but also the tourism sector - both essential for the UK and Irish economy."
Koster added the carrier, which this week deferred acceptance of a €9 billion bailout, was confident people would be keen to travel again in the near future.
New routes include: Dublin-Geneva (Swiss); Heathrow-Munich (Lufthansa), Heathrow-Vienna (Austrian Airlines) and Heathrow-Brussels (Brussels Airlines); Manchester-Zurich (Swiss) and Manchester-Brussels (Brussels Airlines); Birmingham-Frankfurt (Lufthansa); and Edinburgh-Geneva (Edelweiss).
Increased frequencies include: Dublin-Zurich (Swiss); and Heathrow-Zurich (Swiss), Heathrow-Geneva (Eurowings), Heathrow-Hamburg (Eurowings), and Heathrow-Stuttgart (Eurowings).