Australia recorded a comprehensive 4-0 rout over England at home earlier this year but they have not won an away Ashes series since Steve Waugh's side triumphed 4-1 in 2001.
The Ashes will kick off the inaugural World Test Championship, which will see nine top-ranked test nations competing in a league over a two-year cycle.
England are also scheduled to meet Ireland at Lord's in a four-day test from July 24-27, their first test of fewer than five days since the tour of New Zealand in 1971.
"We expect next summer's inaugural Test Match at Lord's against our neighbours to be an historic celebration for all Irish cricket fans," ECB chief executive Tom Harrison said in a statement.
"It will also provide excellent Ashes preparation for England against an Irish team whose impressive performance against Pakistan earlier this year showed they can compete strongly in this form of the game."
Pakistan will be England's first opponent of the home international season next year, with their tour featuring five one-day internationals (ODI) and one Twenty20, as both countries prepare for the 50-overs World Cup starting on May 30.
England's 2019 home schedule:
May 5: Only Twenty20 v Pakistan, Cardiff
May 8: First ODI v Pakistan, the Oval
May 11: Second ODI v Pakistan, Southampton
May 14: Third ODI v Pakistan, Bristol
May 17: Fourth ODI v Pakistan, Trent Bridge
May 19: Fifth ODI v Pakistan, Headingley
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July 24-27: Only test v Ireland, Lord's
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Aug. 1-5: First test v Australia, Edgbaston
Aug. 14-18: Second test v Australia, Lord's
Aug. 22-26: Third test v Australia, Headingley
Sept. 4-8: Fourth test v Australia, Old Trafford
Sept. 12-16: Fifth test v Australia, the Oval
(Reporting by Hardik Vyas in Bengaluru; Editing by Mark Heinrich)
