Because UEFA voted that the ban on English clubs in European competitions (beginning after the Heysel disaster in May 1985) would continue for a second season, Oxford United were denied a place in the 1986–87 UEFA Cup.
Oxford United and Queens Park Rangers were both playing in the First Division and both entered the competition at the second round stage, under the tournament format in place at the time. Oxford had never previously progressed past the quarter finals, which they reached in the 1969–70 and 1983–84 seasons. Queens Park Rangers, on the other hand, were victorious in the 1967 final where they defeated West Bromwich Albion. In the second round, Oxford defeated Northampton Town of the Fourth Division 4–1 on aggregate after two legs. The 2–1 away victory at County Cricket Ground was Oxford's first and only away win at Northampton in cup competitions.
After a third-round home win against Newcastle United, Oxford United faced Second Division side and cup holders Norwich City in the fourth round, winning 3–1. In the fifth round Oxford defeated Portsmouth 3–1, making it the third consecutive round where a 3–1 home victory was recorded. Despite the fifth-round tie, the attendance for the game was around 400 lower than the league average, after a boycott was organized due to increased ticket prices.
The London-based club began the competition against Second Division team Hull City, winning 8–1 on aggregate, including a 5–1 away victory at Boothferry Park. In the third round they beat Watford of the First Division 1–0 at Vicarage Road. The "Hoops" defeated another First Division team, Nottingham Forest, in the fourth round, but found the fifth round tougher against Chelsea. After the first match ended in a 1–1 draw at Loftus Road, the reply held at Stamford Bridge ended in a 2–0 win with goals from Alan McDonald and Michael Robinson. In the semi-finals, Queens Park Rangers took on Liverpool. QPR went through 3–2 on aggregate after a 1–0 home win was followed by a 2–2 draw at Anfield. Apart from the second-round tie against Hull City, all the teams that Queens Park Rangers defeated on their way to Wembley played in the First Division, including champions Liverpool. In contrast, Oxford United only faced two, Newcastle United and Aston Villa.