MOST of the travel news this week has been focussed on the bomb threat against New York and Wash­ington and the changes to air travel since the 9/​11 attacks. But flying under the radar was yet another increase to air­line ticket prices. On Friday, South­west Air­lines announced that it would join other domestic car­riers in raising prices for pre­mium tickets by around $6-$10 per round-​​trip.

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