One of Europe's largest cities, London is also one of the world's most visited. United Airlines is offering flights through March from $199* each way. You must book by 8/28.

Spreading out for more than 30 miles along the banks of the Thames River, this cosmopolitan, contemporary metropolis is really a collection of quaint, historic towns. Steeped in history and packed with sights and attractions, London truly lives up to its legend. Read more about London.

Book your travel to the English capital before August 28, 2007 to take advantage of these low fares. *Terms and conditions apply.

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SOURCE: United Airlines