RAIL services in and around Wrexham and Flintshire will be affected as Arriva Trains Wales staff go on strike.
The company is advising passengers that none of its trains will be operating on Sunday or Monday due to strike action planned by members of the ASLEF trade union.
The union, which represents train drivers and operators, is in dispute with ATW over pay.
A spokesman for ATW said: "This is a very regrettable situation which will affect Wrexham, Flintshire and all parts of North Wales which rely on Arriva for its rail services, even on the local lines.
"It's very unfortunate that the strike action will affect the commute on Monday morning and our main concern is for those who will be returning to work after the half term break.
"But we have made every effort to notify as many people as possible in advance."
As a result, late services tomorrow and early journeys on Tuesday may also be affected.
Passengers are advised to make alternative arrangements for these dates as Arriva Trains Wales will not be providing alternative road transport.
First Great Western, Cross County and Virgin Trains services will not be affected.
For more information visit www.nationalrail.co.uk or call National Rail Enquiries on 08457 484950.
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