Nearly every game show in the 60s-80s had at least one airline "providing" the air travel to a destination mentioned in a prize, whether it was one of the major domestic airlines, or a foreign airline.
Airlines were also mentioned occasionally for travel arrangements for bringing contestants to the show or for bringing celebrities and staff to and from the shows as well.
Once we got into the 21st century, the airline mentions for trips were quickly disappearing from most shows. Even shows like TPIR just mention generic "round-trip coach airfare" to destinations now.
So what really killed off actual airlines providing the air travel for specific mention on the show? Was consolidation of airlines the last few decades a factor? The fact that trips don't necessarily begin in LA or NYC anymore and that might determine what airline they use for the prize winner?