Here’s the signature t-shirt from the oneworld MegaDO which featured one of the best flight delays ever. Ever? Yes, ever. With an international itinerary of JFK >> LHR >> DFW, this MegaDO provided experiences in Dallas that hasn’t been touched yet (we’ll get to the flight delay). Host American Airlines treated everyone to a slide and a pool party (use your imagination frequent flyers). Charter route was DFW >> SEA >> LAX. As for the “best flight delay ever” … you have to go on a MegaDO to find out what this means. Really, EVER!