The Smart Marty Sky Dispatch
Inside Southwest Airlines' Longest Flights In 2026
Southwest's five longest routes all cross the Pacific, and four of them leave from just two airports.
Southwest Airlines has long focused on short domestic flights, operating a fleet entirely of Boeing 737s. Recent schedule data highlights a different aspect of its network: the six longest routes it runs are all Pacific crossings to Hawaii.
All six of these lengthy routes originate from just two mainland gateways, Phoenix Sky Harbor (PHX) and Harry Reid International (LAS). From these hubs, the carrier serves several Hawaiian destinations, including Honolulu (HNL), Kahului (OGG), Lihue (LIH), and Kona (KOA).
The ranking centers on inter-island and cross-Pacific itineraries that stretch Southwest’s typical short-haul profile. The routes connect PHX and LAS to multiple Hawaiian airports, creating the airline’s most extended operations in its current timetable.
No additional details are provided about specific flight numbers, exact distances, or scheduled frequencies in the material supplied. The focus remains on identifying the routes as the longest within Southwest’s network and noting their shared origin points.
The material notes Brandon Shaw as a private pilot and aviation writer who shares informed insights with readers, but it does not add quotes or further context about the flights themselves.