Iberia has launched a half-price deal with Heathrow Express for travel between London Paddington and the airport.
Under the deal, valid until June 17, the 15-minute journey costs £8.25 instead of £16.50 one-way, while a return ticket costs £16 instead of £32.
Officially the offer is valid for Iberia customers only, but to book travellers can visit www.heathrowexpress.com/iberiasp.
According to an Iberia spokesman, the Spanish flag carrier is planning more promotions with Heathrow Express.
www.iberia.com