The best fares in the current crop of US flight sales come from American Airlines, with flights to nine cities from £249 per person.
The sale ends on 14 July. Here are some of the routes on offer:
London Heathrow to New York JFK (direct)... £249
London Heathrow to Boston (direct)... £269
London Heathrow to Los Angeles (direct)... £329
London Heathrow to Las Vegas... £367
Manchester to Chicago (direct)... £300
Manchester to San Francisco... £353
The fares are available from London Heathrow 24 August-31 October and 1 November-31 March, 2010, and from Manchester between 1 November and 31 March, 2010.
Travelzoo tip: Flights from Manchester are £3 more 24 August-31 October