British Airways Executive Club has launched a flash promotion for members using Avios to reduce the cost of their flight.

Those booking flights before midnight on Monday August 23 and using the Avios part payment option, will get up to four times the usual value.

The terms and conditions of the offer confirm that:

“The offer entitles Eligible Members booking Eligible Flights at, or via a British Airways global engagement centre, to receive a discount of £5 per person on a return flight in exchange for 250 Avios, a discount of £18 in exchange for 900 Avios, a discount of £32 in exchange for 1600 Avios, a discount of £56 in exchange for 2,800 Avios, a discount of £80 for 4,000 Avios or a maximum discount of £100 for 5,000 Avios.

“If a Member is booking a one-way flight, the discounts per person will be as follows: £5 discount for 250 Avios, £9 discount for 450 Avios, £16 discount for 800 Avios, £28 discount for 1,400 Avios, £40 discount for 2,000 Avios, or a maximum discount £50 for 2,500 Avios.”

Members should log in to their Executive Club account and search for flights as normal, where they’ll see the part payment options on the price page for eligible flights.

The T&Cs state that an eligible flight is any “British Airways operated one-way or return flight, departing from the UK, in all cabins”.

British Airways launched Part Pay with Avios in 2013, initially restricting it to short-haul flights, before subsequently extending it to long-haul services.