German leisure airline TUIfly is considering converting part of its big order for Boeing 737 MAX 8s into the larger -10 to have more capacity on dense routes.

“We will make that decision this year,” TUIfly managing director Oliver Lackmann said on the sidelines of the ITB tourism fair in Berlin March 7.

As part of a large TUI Airlines’ order for 72 MAXs, TUIfly plans to take delivery of 25 737 MAX 8s in the coming years.

TUIfly Germany’s first aircraft is scheduled to arrive March 13, with another five to follow before the end of the year. The airline will receive four each in 2020 and 2021 and a further seven in 2022, according to current plans.

Lackmann said the airline has worked on a business plan to convert up to four of the 2027 slots to the larger -10.

In TUIfly’s configuration, the 737-8 will have 189 seats and the -10 would have space for 30 more seats.

The airline is in the process of harmonizing its fleet around the 737-800 and 737-8. The last of the smaller -700s will leave the fleet in April. The -8 are planned to be used on the carrier’s longest routes on which the -800s are weight-restricted. Among them are flights from Germany to Cape Verde Islands and Dubai

TUIfly is adding 7% more seats in the summer season operating 39 aircraft plus two more it wet leases.

Lackmann said TUIfly is not in talks with Thomas Cook about all or parts of the airline division that company plans to sell.

Jens Flottau, jens.flottau@aviationweek.com