I normally try to talk clients out of mixing airlines. The potential problems usually far out-weigh most perceived time and/or money savings.
Now, JetBlue is moving a step closer to the mainstream by joining ARC. This will make life easier both for travel agents and for their clients. Besides simpler refunds and exchanges, unused e-tickets can be traced in the system and record keeping will be much easier.
The first lesson in Airline Jargon 101 — Janice explains ticketing agreements between airlines and why they make a difference to passengers, especially when the weather gets bad or there are airline and airport problems.