The FAI will receive an allocation of 2,200 tickets for the Euro 2020 Play-Off away to Slovakia on March 26th.
Mick McCarthy's side will take on Slovakia in their Play-Off Semi-Final at the Tehelne Pole Stadium in Bratislava, with the winner advancing to face either Bosnia & Herzegovina or Northern Ireland on March 31st.
The FAI has stated it will "endeavour to cater for the most loyal Republic of Ireland supporters".
The ticketing allocation structure introduced last year will see the supporters clubs benefit the most.
In total 65% will be allocated to independent supporters who are members of Republic of Ireland Soccer Supporters Clubs and Fans' Direct.
Then 20% will be distributed to supporters from affiliated football Leagues and more than 2,000 clubs which fall under their remit, Board and National Council members, players/staff, and Club Ireland members.
The final 15% will be provided to supporters travelling with the FAI's official travel partner, Abbey Travel.
Supporters interested in applying for tickets will be ranked on their attendance records from eight away games over the last two years.
The away ticketing portal has opened as of today (Monday) and will close on Sunday January 26th at midnight but the Slovakian Football Association is yet to confirm ticket prices.