Air Line Pilots Association v. Joseph E. O'Neill
499 U.S. 65 · Decided March 19, 1991 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Air Line Pilots Association v. Joseph E. O'Neill was decided on March 19, 1991 unanimously (9–0). The Court reversed the lower court's decision. Justice John Paul Stevens wrote the opinion of the Court. SCDB classifies its main issue as “Union-union member disputes” in the Unions area.
Read the opinion
Case details
- Citations
- 499 U.S. 65 · 111 S. Ct. 1127 · 113 L. Ed. 2d 51 · 1991 U.S. LEXIS 1711
- Docket number
- 89-1493
- Decided
- March 19, 1991
- Argued
- January 14, 1991
- Court era
- Rehnquist Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- John Paul Stevens
- Opinion assigned by
- William H. Rehnquist
- How the case arrived
- Certiorari
- Issue (SCDB)
- Union-union member disputes
- Issue area
- Unions
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Justice Harry A. Blackmun | Majority | |
| Chief Justice William H. Rehnquist | Majority | |
| Justice John Paul Stevens | Majority | Wrote an opinion |
| Justice Sandra Day O'Connor | Majority | |
| Justice Antonin Scalia | Majority | |
| Justice Anthony M. Kennedy | Majority | |
| Justice David H. Souter | Majority |
Full case caption
Air Line Pilots Association, International v. Joseph E. O'Neill et al.
SCDB identifiers: case 1990-043, docket 1990-043-01.
Related decisions
Other cases on “Union-union member disputes”
- International Organization of Masters v. Timothy A. Brown
- Lynn L. Breininger v. Sheet Metal Workers International Association Local Union No. 6
- Sheet Metal Workers' International Assn. v. Lynn
- Reed v. United Transportation Union
- National Labor Relations Board v. International Brotherhood of Electrical Workers
- West v. Conrail
Same Term, same area (Unions)
- Arthur Groves v. Ring Screw Works
- International Organization of Masters v. Timothy A. Brown
- Lynn Martin v. Occupational Safety and Health Review Commission
- American Hospital Association v. National Labor Relations Board
- Robert D. Gilmer v. Interstate/johnson Lane Corporation
- James P. Lehnert v. Ferris Faculty Association
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error