https://flightqueue.com/oldest-airlines
Oldest Airlines Still Flying Today — World's Longest-Running Carriers
World's oldest airlines still operating. KLM (1919) tops the list, followed by Avianca, Qantas, Aeroflot, Czech Airlines, and Finnair. Top 15 ranked.
oldest airlinesstill flyingtodayworldlongest
https://www.azcentral.com/picture-gallery/travel/airlines/2026/04/20/oldest-us-airlines-in-phoenix/89552889007/
See how oldest U.S. airlines made history in Phoenix
see howmade history