We should require passports to fly domestically.

In addition to SAA and its affiliates, airlines flying domestically include the following:

Mexico has an extensive network of modern airports all throughout the territory; flying domestically is considered efficient and safe.

Among the suggestions offered by Peter Greenberg are: Mail your luggage when flying domestically.

It's easy and inexpensive to fly domestically - tickets are rarely more than $50 one way.

The airline flew domestically within Australia and from the 1990s to destinations in Asia.

The paper tickets were not their first choice, said Mr. Prasad, who usually chooses e-tickets when flying domestically.

Passengers still had to pass through the electronic arches and, conversely, authorities wanting to pick up a passenger flying domestically would simply wait by a specific gate.

The number who say they expect to fly domestically and internationally next year is up 12 percent, American Express said.

"I'm not a big traveler," she said, "but I don't know if I'll be flying domestically again soon."