At 3,142 nautical miles (5,828 km) each way, Alaska's new route will be the longest passenger-carrying MAX flight of any US operator to date. When all 737 models are included, it will also be the type's longest nonstop service ever by any US carrier. Of course, it won't be short enough to make the US's 10 shortest European flights list.

Alaska Airlines is gearing up for more international routes since merging with Hawaiian. That includes the longest 737 journey by a US airline.

Alaska Airlines announced it would begin service to London and Reykjavik this spring, as well as update the livery on some of its planes.