Southern Rail passengers have a month left to claim refunds on their tickets after severe disruption to the network in 2016.
Compensation is available as part of a scheme launched by the Department of Transport.
Travellers who held at least 12 weeks’ worth of season tickets between April 1 and December 31, 2016 are eligible for compensation equivalent to one months travel or half of the ticket price for annual season ticket holders.
Day ticket holders who’s trains were delayed by over 15 minutes may be eligible to apply for a refund under the separate Delay Repay scheme.
Southern customers are defined as anyone who held a season ticket that started or finished at a Southern managed station and/or a “reasonable portion” of their journey was made using the Southern network.
Passengers are able to claim compensation even if their ticket was discounted.
Southern’s passenger services director Angie Doll said: “We have spent the last few weeks contacting all the passengers who we know qualify and have details for.
“We’re now inviting anyone we have missed or who believes they may be entitled to compensation to come forward and claim.
“Last year was very difficult for Southern passengers and I am glad this scheme recognises this.
“I would urge season ticket holders to go online and claim if they believe they are eligible for compensation.”
Passengers can check their eligibility online at www.southernrailway.com/2016compensation.
The scheme closes on April 30.