Flights to London may be a little less expensive this summer, as long as you book soon.

British Airways announced a one-week seat sale, offering round-trip flights to London for $499, plus tax and charges, between May 26 and September 3 of this year, but in order to receive the discounted price, the seats must be bought before May 19 (next Monday), and your stay must include at least one Saturday night.

While the $499 seats are economy class, for an additional $200 you can find premium economy seats, provided that you book 21 days before you intend to fly.

"From now until September there are such varied events as Wimbledon, cricket at Lord's, the Antique Fair at Olympia, Prom Concerts at Royal Albert Hall, Notting Hill Carnival, and the 90th birthday party of Nelson Mandela," BA's Bermuda manager Marianne Wilcox said in the press release.

In addition to the price cut, BA is offering a 15-percent discount on UK hotel rooms, car rentals, sightseeing tours and airport transfers for online customers on its BA Holidays programme.

Taxes and fees on the tickets for a Bermuda to London round trip, including the fuel surcharge, total over $380, leaving the total seat-sale cost at close to $880.