March 28 (Reuters) - Britain's competition regulator

said on Friday five airlines, including British Airways

and American Airlines ( AAL ), have offered commitments to

resolve concerns over their agreement to cooperate on passenger

routes between the UK and the U.S.

The group of airlines, including Iberia, Aer Lingus, and

Finnair, agreed to give their competitors slots for

take-off and landing at London airports on routes to and from

Boston, Miami, and Chicago, the Competition and Markets

Authority (CMA) said.

The five carriers together form the Atlantic Joint Business

Agreement, which allows them to coordinate their transatlantic

flights and make business decisions on prices and schedules.

American Airlines ( AAL ) and Aer Lingus did not immediately respond

to Reuters' requests for comments, while the other

three airlines did not immediately respond.