*Fixed Date Off Peak Express £15 one way fare available online or the Heathrow Express App when you book at least one day in advance of your travel date. Purchase tickets 13 March-23 April 2017 for travel from 14 March 2017-21 May 2017. Excludes travel during peak 7am-10am and 4pm-7pm Monday to Friday. For the entire Easter weekend (14th-17th April 2017) the online £15 fare will be available to buy on the day. Valid for a one way journey on the date of travel booked and can be used in either direction. Tickets are non-exchangeable and non-refundable unless affected by service disruption. Tickets cannot be used in conjunction with any other promotion, offer, discount, railcards or other third party offers. Heathrow Express reserves the right to withdraw the promotion at any time provided all outstanding purchases are honoured. Children aged 15 yrs or under travel free with an accompanying adult (aged 18 yrs or over) travelling with a valid ticket. When booking tickets online the number of children’s tickets must be selected. Heathrow Express operates between Heathrow Airport and London Paddington.