How 5G Affects Airlines: As the deadline for the implementation of 5G networks in the United States, July 1, 2023, approaches, American airlines are preparing for possible flight delays. US Transportation Secretary Pete Buttigieg warned that planes flying without updated radio altimeters could face delays or cancellations from their scheduled flights to deal with 5G C-band. According to the Washington Journal, Buttigieg said there is a real risk of flight delays or cancellations due to 5G networks. Not only that, but it will be one of the biggest predicted issues affecting airline performance this summer.