Fans can purchase tickets from 10am this morning (Wednesday).
A statement on the official website reads:
Tickets wills go on sale from 10am on Wednesday 2nd May to current Ambassadors and Away Travel members that have been to three or more away League fixtures this season. A voucher exchange policy will be in operation for the game, with vouchers exchanged at a designated rendez-vous point. This destination will be announced in due course.
Tickets for the game at Upton Park are priced as follows:
Season Ticket Holders: Adults @£15, Juniors u16 @£5
General Prices: Adults @£25, Juniors u16 @£15
Subject to availability, any remaining tickets will go on sale to Ambassadors and Away travel members that have been to two or more away League fixtures this season from 9am on Friday 4th May.
Cardiff have 2,000 tickets.