Yes, in 2026, the Boeing 737 MAX is a common sight on transatlantic routes, completely changing the economics of "thin" long-haul markets. While older 737s lacked the range for these journeys, the 737 MAX 8 and MAX 9 feature advanced Leap-1B engines and aerodynamic "split-scimitar" winglets that allow for a range of approximately 3,500 nautical miles (6,500 km). Airlines like United, Air Canada, and WestJet use these aircraft for nonstop flights from East Coast hubs (like Newark, Montreal, or Halifax) to European destinations like London, Dublin, Reykjavik, and even as far as Glasgow or Nantes. These narrowbody planes are "ETOPS" (Extended-range Twin-engine Operational Performance Standards) certified, meaning they are legally cleared to fly over the ocean for several hours away from the nearest diversion airport. For passengers, the experience is slightly different than a widebody "jumbo" jet; there is only one aisle and no "walk-around" space, but many airlines have outfitted these "Atlantic MAX" fleets with lie-flat business seats and high-speed Viasat Wi-Fi to make the 7-to-8-hour journey more comfortable.