Narrowbody aircraft are increasingly used for long-haul flights, with the Boeing 737 being a prominent example. According to OAG data, there will be up to 28 daily transatlantic flights using this type of aircraft during peak summer months. This figure marks the highest number recorded to date. The Boeing 737 will account for one in every 53 passenger flights heading east from the Americas, with this proportion rising if only North America is considered.
Airlines such as Air Canada, Air Saint-Pierre, Icelandair, United Airlines, and WestJet are utilizing the Boeing 737 for these routes. A total of 34 airport pairs are operated by these airlines using this aircraft type. Among them, Air Saint-Pierre stands out due to its unique operations; it plans to wet lease a Boeing 737-700 from ASL Airlines for limited-time summer flights between Paris CDG and domestic transatlantic destinations.
The list of the ten longest transatlantic Boeing 737 flights includes three new entries for this year. WestJet's new Halifax-Amsterdam route is noteworthy; it begins on May 29 and operates up to six times weekly due to its codeshare agreement with KLM and connectivity through Halifax. This new service has displaced another WestJet route—Halifax-Paris CDG—from the top ten longest routes.