Last year, Delta Air Lines Inc. unveiled a unique experiment in upgrades. It gave its very frequent flyers a chance to book a seat most can only dream of—on a private jet. For a few hundred dollars more, the dream could become reality.
The...
Last year, Delta Air Lines Inc. unveiled a unique experiment in upgrades. It gave its very frequent flyers a chance to book a seat most can only dream of—on a private jet. For a few hundred dollars more, the dream could become reality.
The...