United announced a terrific airfare sale today. Flights from $49 each way to multiple cities in the U.S. Flights from $159 each way for international destinations. You have to buy a round-trip ticket, and there are other rules.

Visit www.united.com for sample fares.

Here are some of the details.

Purchase by January 9, 2007.

For U.S. and Canada destinations travel must be complete by March 7, 2007, and internationally by March 31, 2007

A 2-night minimum stay is required for U.S. destinations and a 30-day maximum stay is permitted.

International minimum stay requirements: Europe/Middle East – Saturday night; Pacific – 6 days; Latin/Caribbean – 3 days

A 30-day maximum stay is permitted for international destinations

Blackout dates and travel day restrictions apply; see www.united.com fare facts for full rules and information.

Dec. 27, 2006.