Six top destinations

Sydney: £486
Olympic Airlines from Heathrow via Athens and Bangkok. Must be booked by May 12. Valid for departures until June 30. No minimum stay, maximum one year. Bridge the World (0870 4447474).

Hong Kong: £406
Alitalia from Heathrow via Rome. Valid for departures until July 15. Minimum stay one Saturday night, maximum three months. Thomas Cook Flights Direct (0870 7520066).

Los Angeles: £298
Virgin Atlantic from Heathrow. Valid for departures May 8 - 31. Minimum stay one Saturday night, maximum one month. Quest Travel (0870 4445552).

New York: £198
Air India from Heathrow. Valid for departures until May 31. No minimum stay, maximum one year. Thomas Cook Flights Direct (0870 7520066).

Paris: £89
Air France from Heathrow. Must be booked by May 14. Valid for departures until June 30. Full payment required when booking. Minimum stay one Saturday night, maximum one month. Airline Network (0800 727747).

Amsterdam: £111
KLM UK from Birmingham. Must be booked by March 31 next year. Valid for departures until December 31 next year. Minimum stay one Saturday night, maximum one month. Trailfinders (020-7937 1234).

The pick of the rest

Mexico City: £317
Air France from Heathrow, London City, Birmingham, Edinburgh, Glasgow, Manchester, Newcastle or Southampton via Paris. Must be booked by May 30. Valid for departures until June 15. Minimum stay one Saturday night, maximum one month. Journey Latin America (020-8747 3108).

Delhi: £348
United Airlines from Heathrow. Must book by May 31. Valid for departures until June 30. Minimum stay one Saturday night, maximum one month. Trailfinders (020-7937 5400).

Venice/Rome/Bologna: £99
Alitalia from Gatwick. Must be booked by May 14 and at least three days before departure. Valid for departures until May 31. Minimum stay one Saturday night, maximum one month. Alitalia (0870 544 8259).

Gerona: £95
Air 2000 charter from Gatwick. Departs May 18 for seven nights. Avro (020-8695 4440).

And the rail alternative

Paris/Brussels: £70. Lille £60
Eurostar from Waterloo. Must be bought at least 14 days before departure. Minimum stay one Saturday night or two other nights. Eurostar (08705 186186).

NB Fares can change rapidly. These were available in reasonable quantities at the time of writing, but they can sell out in a sudden rush.