Delta has been testing out a number of other services aimed at streamlining the flight experience and reducing hassle. These include kiosks that let you video chat with an airline rep, replacing boarding passes with fingerprints and using face scans to check baggage. Delta also began rolling out RFID tags for luggage tracking and a map that allows customers to see exactly where their baggage is and where it has been.

While some of those programs -- like the biometric identification -- might not be everyone's cup of tea, pretty much anyone can get behind free in-flight messaging. There is a caveat, customers will only be able to send texts, not video or photos. Delta's chief marketing officer, Tim Mapes, said in a statement, "Even the most seasoned travellers can find themselves mid-air and caught out by a last-minute cancellation or arrangement. Rather than having to count down the hours until landing, Delta customers can continue socialising or working with the tap of a smartphone and enjoy peace of mind at every stage of the flight."