British Airways is introducing a third non-stop daily service between Heathrow and Chicago.
The extra flights on Boeing 777 and 787 aircraft will start from May 11.
The airline has also moved its departures from Terminal 5 to Terminal 3 at Chicago O’Hare International Airport.
The move coincides with BA’s 70th anniversary of flying to Chicago.
The airline said moving its departures to Terminal 3 will give departing BA customers an “enhanced travel experience”, with dedicated check-in desks and improved connections within the American Airlines network.
Eligible customers will be able to use premium lounges, including the American Airlines Flagship Lounge and Admirals Club lounges.
The airline’s arrival service will continue in Terminal 5.
Neil Chernoff, BA chief planning and strategy officer, said: “The introduction of our third daily service to London and moving our departures to Terminal 3 alongside our Atlantic Joint Business partners underscore our commitment to providing unparalleled service and convenience to our valued customers in Chicago.”
All BA, Iberia and Aer Lingus flights will now depart from Chicago O’Hare International Airport, Terminal 3.
The move will also bring British Airways closer to its oneworld partners including American Airlines, Iberia, Japan Airlines who are already based at Terminal 3.
The airline also celebrated the career of regional airport manager Maureen McLafferty, who has dedicated 40 years of service to British Airways in Chicago.