TUI is reshaping its airline operation, and the largest member of the Boeing 737 MAX family is set to play an increasingly important role.

The leisure giant is preparing to introduce the Boeing 737-10 during 2027, while at the same time concentrating more of its flying around larger bases where it believes it can generate greater efficiencies.

It is a strategy that could eventually see TUI move away from smaller regional aircraft and place greater emphasis on fewer, higher-capacity aircraft operating from its strongest markets.

TUI expects its first Boeing 737-10 to enter service during the second quarter of 2027, subject to the aircraft receiving certification.

Amsterdam has been selected as the launch base for the new type.

TUI currently plans to replace the six Boeing 737-8 aircraft based in the Dutch capital with seven larger 737-10s. According to the company, the new aircraft will provide around 15% more seats per aircraft.

That additional capacity is significant for a leisure airline.

Rather than simply adding more flights to meet growing demand, TUI can carry substantially more passengers on each departure while retaining the commonality of the Boeing 737 MAX family.

TUI has previously outlined an overall order covering 96 Boeing 737-8 and 737-10 aircraft. By the end of January 2026, 55 of its 189-seat 737-8s had already been delivered, leaving 41 aircraft from the order still to come.

The majority of those remaining aircraft are expected to be the larger 737-10.

It comes down largely to capacity and efficiency.

TUI isn't a conventional network airline trying to offer passengers as many connecting opportunities as possible. Its airline operation exists primarily to move large numbers of holidaymakers between its European source markets and popular leisure destinations.

If TUI can reliably fill a larger aircraft, increasing the number of seats on each flight can be more attractive than simply adding another frequency.

That's particularly relevant at major bases and congested airports where slots, aircraft and crews all come at a premium.

TUI says the 737-10 will allow it to respond to strong demand in the Netherlands while also giving it greater flexibility to move capacity around its wider network.

Its summer 2027 plans provide a good example of this strategy.

The company is increasing its presence at London Gatwick to 59 destinations, while Amsterdam will simultaneously become the first base to receive the larger 737-10.

In other words, TUI appears increasingly interested in building strong operations around markets where it can achieve scale.

This is where TUI's changing strategy becomes particularly interesting.

Aviation Week reports that TUI is closing several bases as it focuses on markets capable of supporting higher-frequency flying and greater operational synergies.

The publication also reports that TUI could move away from Embraer's E2 family as part of that strategy.

That would represent quite a different philosophy from operating smaller aircraft.

Regional jets such as the Embraer E195-E2 can make considerable sense where demand isn't sufficient to regularly fill a larger Boeing 737 or Airbus A320-family aircraft.

But if TUI's priority is increasingly to consolidate operations at larger bases and carry greater numbers of passengers on established leisure routes, the argument for smaller aircraft becomes less obvious.

No final decision to abandon the E2 should be assumed at this stage. Aviation Week's reporting is that TUI may drop the aircraft rather than that a firm fleet exit has already been announced.

Nevertheless, the direction of travel is interesting.

TUI's strategy appears to be about more than simply replacing one Boeing 737 with another.

The airline is trying to create what its Chief Commercial Officer Peter Glade has described as stronger operational "strongholds", concentrating resources in markets where TUI can achieve greater scale.

For passengers, that could eventually mean a network increasingly built around larger TUI bases rather than a more fragmented operation spread across numerous smaller ones.

There are obvious operational benefits.

Concentrating aircraft, crews and maintenance requirements at larger bases can create efficiencies, while larger aircraft allow TUI to add seats without necessarily adding the same number of additional flights.

But it also means TUI needs enough demand to fill those aircraft.

The 737-10 is the largest member of Boeing's MAX family, making it particularly suited to high-volume routes where the airline knows it can consistently sell large numbers of package holidays and flight-only seats.

That's the big caveat.

TUI currently expects the aircraft to enter service in the second quarter of 2027, but that remains dependent on certification.

The 737-10 has endured a lengthy certification process and is not yet carrying passengers.

TUI's plans therefore depend on Boeing successfully completing the remaining certification work and delivering aircraft on schedule.

If that happens, Amsterdam should become the first place passengers encounter TUI's new flagship narrowbody.

From there, the type could become an increasingly familiar sight across the airline's European leisure network as more aircraft arrive.

TUI's move towards the Boeing 737-10 makes plenty of sense when viewed alongside the wider changes taking place across its airline business.

This isn't simply about getting a newer Boeing 737.

TUI is increasingly concentrating capacity in its strongest markets, and a larger aircraft capable of carrying around 15% more passengers than its 737-8s fits neatly into that strategy.

The potentially more significant story will be what happens at the other end of the fleet.

If TUI ultimately decides that smaller Embraer E2 aircraft no longer fit its network, it would underline just how far its strategy has shifted towards larger bases, higher capacity and greater fleet commonality.

For passengers, the first visible sign of that new era should arrive in Amsterdam during 2027, when, certification permitting, TUI's first Boeing 737-10 finally enters passenger service.